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-rw-r--r--src/iemlib1/biquad_freq_resp.c92
-rw-r--r--src/iemlib1/db2v.c45
-rw-r--r--src/iemlib1/f2note.c189
-rw-r--r--src/iemlib1/forpp.c192
-rw-r--r--src/iemlib1/gate.c84
-rw-r--r--src/iemlib1/iemlib.h98
-rw-r--r--src/iemlib1/iemlib1.c82
-rw-r--r--src/iemlib1/iemlib1.dsp85
-rw-r--r--src/iemlib1/iemlib1.dsw29
-rw-r--r--src/iemlib1/makefile72
-rw-r--r--src/iemlib1/makefile.darwin72
-rw-r--r--src/iemlib1/makefile_win61
-rw-r--r--src/iemlib1/sigFIR.c177
-rw-r--r--src/iemlib1/sigfilter.c822
-rw-r--r--src/iemlib1/sighml_shelf.c558
-rw-r--r--src/iemlib1/sigiem_cot4.c176
-rw-r--r--src/iemlib1/sigiem_delay.c208
-rw-r--r--src/iemlib1/sigiem_pow4.c86
-rw-r--r--src/iemlib1/sigiem_sqrt4.c117
-rw-r--r--src/iemlib1/siglp1_t.c219
-rw-r--r--src/iemlib1/sigmov_avrg_kern.c143
-rw-r--r--src/iemlib1/sigpara_bp2.c426
-rw-r--r--src/iemlib1/sigpeakenv.c102
-rw-r--r--src/iemlib1/sigprvu.c282
-rw-r--r--src/iemlib1/sigpvu.c206
-rw-r--r--src/iemlib1/sigrvu.c187
-rw-r--r--src/iemlib1/sigsin_phase.c129
-rw-r--r--src/iemlib1/sigvcf_filter.c334
-rw-r--r--src/iemlib1/soundfile_info.c261
-rw-r--r--src/iemlib1/split.c54
-rw-r--r--src/iemlib1/v2db.c45
31 files changed, 5633 insertions, 0 deletions
diff --git a/src/iemlib1/biquad_freq_resp.c b/src/iemlib1/biquad_freq_resp.c
new file mode 100644
index 0000000..3ebe25d
--- /dev/null
+++ b/src/iemlib1/biquad_freq_resp.c
@@ -0,0 +1,92 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+/* --------------------------- biquad_freq_resp ----------------------------- */
+
+typedef struct _biquad_freq_resp
+{
+ t_object x_obj;
+ float a0;
+ float a1;
+ float a2;
+ float b1;
+ float b2;
+ t_outlet *x_out_re;
+ t_outlet *x_out_im;
+} t_biquad_freq_resp;
+
+static t_class *biquad_freq_resp_class;
+
+static void biquad_freq_resp_float(t_biquad_freq_resp *x, t_float f)
+{
+ float re1, im1, re2, im2;
+ float c, s, a;
+
+ if(f < 0.0f)
+ f = 0.0f;
+ else if(f > 180.0f)
+ f = 180.0;
+ f *= 3.14159265f;
+ f /= 180.0f;
+
+ c = cos(f);
+ s = sin(f);
+
+ re1 = x->a0 + x->a1*c + x->a2*(c*c - s*s);
+ im1 = x->a1*s + x->a2*2.0f*(s*c);
+ re2 = 1.0f - x->b1*c - x->b2*(c*c - s*s);
+ im2 = -x->b1*s - x->b2*2.0f*(s*c);
+ a = re2*re2 + im2*im2;
+ outlet_float(x->x_out_im, (re1*im2 - re2*im1)/a);/* because z^-1 = e^-jwt, negative sign */
+ outlet_float(x->x_out_re, (re1*re2 + im1*im2)/a);
+
+}
+/* y/x = (a0 + a1*z-1 + a2*z-2)/(1 - b1*z-1 - b2*z-2);*/
+
+static void biquad_freq_resp_list(t_biquad_freq_resp *x, t_symbol *s, int argc, t_atom *argv)
+{
+ if((argc == 5)&&IS_A_FLOAT(argv,4)&&IS_A_FLOAT(argv,3)&&IS_A_FLOAT(argv,2)&&IS_A_FLOAT(argv,1)&&IS_A_FLOAT(argv,0))
+ {
+ x->b1 = (float)atom_getfloatarg(0, argc, argv);
+ x->b2 = (float)atom_getfloatarg(1, argc, argv);
+ x->a0 = (float)atom_getfloatarg(2, argc, argv);
+ x->a1 = (float)atom_getfloatarg(3, argc, argv);
+ x->a2 = (float)atom_getfloatarg(4, argc, argv);
+ }
+}
+
+static void *biquad_freq_resp_new(void)
+{
+ t_biquad_freq_resp *x = (t_biquad_freq_resp *)pd_new(biquad_freq_resp_class);
+ x->x_out_re = outlet_new(&x->x_obj, &s_float);
+ x->x_out_im = outlet_new(&x->x_obj, &s_float);
+ x->b1 = 0.0f;
+ x->b2 = 0.0f;
+ x->a0 = 0.0f;
+ x->a1 = 0.0f;
+ x->a2 = 0.0f;
+ return (x);
+}
+
+void biquad_freq_resp_setup(void)
+{
+ biquad_freq_resp_class = class_new(gensym("biquad_freq_resp"), (t_newmethod)biquad_freq_resp_new, 0,
+ sizeof(t_biquad_freq_resp), 0, 0);
+ class_addfloat(biquad_freq_resp_class, biquad_freq_resp_float);
+ class_addlist(biquad_freq_resp_class, (t_method)biquad_freq_resp_list);
+ class_sethelpsymbol(biquad_freq_resp_class, gensym("iemhelp/help-biquad_freq_resp"));
+} \ No newline at end of file
diff --git a/src/iemlib1/db2v.c b/src/iemlib1/db2v.c
new file mode 100644
index 0000000..bbf1c21
--- /dev/null
+++ b/src/iemlib1/db2v.c
@@ -0,0 +1,45 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+/* ---------------- db2v - dB to value converter. ----------------- */
+
+static t_class *db2v_class;
+
+float db2v(float f)
+{
+ return (f <= -199.9 ? 0 : exp(0.11512925465 * f));
+}
+
+static void db2v_float(t_object *x, t_float f)
+{
+ outlet_float(x->ob_outlet, db2v(f));
+}
+
+static void *db2v_new(void)
+{
+ t_object *x = (t_object *)pd_new(db2v_class);
+ outlet_new(x, &s_float);
+ return (x);
+}
+
+void db2v_setup(void)
+{
+ db2v_class = class_new(gensym("db2v"), db2v_new, 0,
+ sizeof(t_object), 0, 0);
+ class_addfloat(db2v_class, (t_method)db2v_float);
+ class_sethelpsymbol(db2v_class, gensym("iemhelp/help-db2v"));
+}
diff --git a/src/iemlib1/f2note.c b/src/iemlib1/f2note.c
new file mode 100644
index 0000000..4df6612
--- /dev/null
+++ b/src/iemlib1/f2note.c
@@ -0,0 +1,189 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+/* ------ frequency to note plus cents converter --------- */
+
+typedef struct _f2note
+{
+ t_object x_obj;
+ void *x_outlet_midi;
+ void *x_outlet_note;
+ void *x_outlet_cent;
+ int x_centomidi;
+ float x_refhz;
+ float x_refexp;
+ float x_reflog;
+ t_symbol *x_set;
+} t_f2note;
+
+static t_class *f2note_class;
+
+float f2note_mtof(t_f2note *x, float midi)
+{
+ return(x->x_refexp * exp(0.057762265047 * midi));
+}
+
+float f2note_ftom(t_f2note *x, float freq)
+{
+ return (freq > 0 ? 17.31234049 * log(x->x_reflog * freq) : -1500);
+}
+
+void f2note_calc_ref(t_f2note *x)
+{
+ float ln2=log(2.0);
+
+ x->x_refexp = x->x_refhz*exp(-5.75*ln2);
+ x->x_reflog = 1.0/x->x_refexp;
+}
+
+static void f2note_make_note(char *str, int midi)
+{
+ int j,k,l=0;
+
+ j = midi / 12;
+ k = midi % 12;
+ if(k <= 5)
+ {
+ if(k <= 2)
+ {
+ if(k==0)
+ str[l]='c';
+ else if(k==1)
+ {
+ str[l++]='#';
+ str[l]='c';
+ }
+ else
+ str[l]='d';
+ }
+ else
+ {
+ if(k==3)
+ {
+ str[l++]='#';
+ str[l]='d';
+ }
+ else if(k==4)
+ str[l]='e';
+ else
+ str[l]='f';
+ }
+ }
+ else
+ {
+ if(k <= 8)
+ {
+ if(k==6)
+ {
+ str[l++]='#';
+ str[l]='f';
+ }
+ else if(k==7)
+ str[l]='g';
+ else
+ {
+ str[l++]='#';
+ str[l]='g';
+ }
+ }
+ else
+ {
+ if(k==9)
+ str[l]='a';
+ else if(k==10)
+ {
+ str[l++]='#';
+ str[l]='a';
+ }
+ else
+ str[l]='h';
+ }
+ }
+
+ if(j < 4)
+ {
+ str[l] -= 'a';
+ str[l] += 'A';
+ }
+ l++;
+ if(j < 3)
+ {
+ str[l++] = '0' + (char)(3 - j);
+ }
+ else if(j > 4)
+ {
+ str[l++] = '0' + (char)(j - 4);
+ }
+ str[l] = 0;
+}
+
+static void f2note_bang(t_f2note *x)
+{
+ int i,j;
+ t_atom at;
+ char s[4];
+
+ i = (x->x_centomidi + 50)/100;
+ j = x->x_centomidi - 100*i;
+ outlet_float(x->x_outlet_cent, (float)j);
+ f2note_make_note(s, i);
+ SETSYMBOL(&at, gensym(s));
+ outlet_anything(x->x_outlet_note, x->x_set, 1, &at);
+ outlet_float(x->x_outlet_midi, 0.01*(float)(x->x_centomidi));
+}
+
+static void f2note_float(t_f2note *x, t_floatarg freq)
+{
+ x->x_centomidi = (int)(100.0*f2note_ftom(x, freq) + 0.5);
+ f2note_bang(x);
+}
+
+void f2note_ref(t_f2note *x, t_floatarg ref)
+{
+ x->x_refhz = ref;
+ f2note_calc_ref(x);
+}
+
+static void *f2note_new(t_floatarg ref)
+{
+ t_f2note *x = (t_f2note *)pd_new(f2note_class);
+
+ if(ref == 0.0)
+ ref=440.0;
+ x->x_refhz = ref;
+ x->x_centomidi = (int)(100.0*ref + 0.499);
+ f2note_calc_ref(x);
+ x->x_outlet_midi = outlet_new(&x->x_obj, &s_float);
+ x->x_outlet_note = outlet_new(&x->x_obj, &s_list);
+ x->x_outlet_cent = outlet_new(&x->x_obj, &s_float);
+ x->x_set = gensym("set");
+ return (x);
+}
+
+static void f2note_free(t_f2note *x)
+{
+}
+
+void f2note_setup(void)
+{
+ f2note_class = class_new(gensym("f2note"), (t_newmethod)f2note_new, (t_method)f2note_free,
+ sizeof(t_f2note), 0, A_DEFFLOAT, 0);
+ class_addbang(f2note_class,f2note_bang);
+ class_addfloat(f2note_class,f2note_float);
+ class_addmethod(f2note_class, (t_method)f2note_ref, gensym("ref"), A_FLOAT, 0);
+ class_sethelpsymbol(f2note_class, gensym("iemhelp/help-f2note"));
+}
diff --git a/src/iemlib1/forpp.c b/src/iemlib1/forpp.c
new file mode 100644
index 0000000..3e98539
--- /dev/null
+++ b/src/iemlib1/forpp.c
@@ -0,0 +1,192 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+/* -------------------------- forpp ------------------------------ */
+
+typedef struct _forpp
+{
+ t_object x_obj;
+ int x_beg;
+ int x_end;
+ float x_delay;
+ int x_cur;
+ int x_incr;
+ void *x_out_end;
+ void *x_clock;
+ void *x_clock2;
+} t_forpp;
+
+static t_class *forpp_class;
+
+static void forpp_tick2(t_forpp *x)
+{
+ outlet_bang(x->x_out_end);
+ clock_unset(x->x_clock2);
+}
+
+static void forpp_tick(t_forpp *x)
+{
+ outlet_float(x->x_obj.ob_outlet, x->x_cur);
+ x->x_cur += x->x_incr;
+ if(x->x_incr > 0)
+ {
+ if(x->x_cur <= x->x_end)
+ clock_delay(x->x_clock, x->x_delay);
+ else
+ {
+ clock_unset(x->x_clock);
+ clock_delay(x->x_clock2, x->x_delay);
+ }
+ }
+ else
+ {
+ if(x->x_cur >= x->x_end)
+ clock_delay(x->x_clock, x->x_delay);
+ else
+ {
+ clock_unset(x->x_clock);
+ clock_delay(x->x_clock2, x->x_delay);
+ }
+ }
+}
+
+static void forpp_bang(t_forpp *x)
+{
+ x->x_cur = x->x_beg;
+ outlet_float(x->x_obj.ob_outlet, x->x_cur);
+ x->x_cur += x->x_incr;
+ if(x->x_incr > 0)
+ {
+ if(x->x_cur <= x->x_end)
+ clock_delay(x->x_clock, x->x_delay);
+ else
+ {
+ clock_unset(x->x_clock);
+ clock_delay(x->x_clock2, x->x_delay);
+ }
+ }
+ else
+ {
+ if(x->x_cur >= x->x_end)
+ clock_delay(x->x_clock, x->x_delay);
+ else
+ {
+ clock_unset(x->x_clock);
+ clock_delay(x->x_clock2, x->x_delay);
+ }
+ }
+
+}
+
+static void forpp_start(t_forpp *x)
+{
+ forpp_bang(x);
+}
+
+static void forpp_stop(t_forpp *x)
+{
+ if(x->x_incr > 0)
+ x->x_cur = x->x_end + 1;
+ else
+ x->x_cur = x->x_end - 1;
+ clock_unset(x->x_clock);
+ clock_unset(x->x_clock2);
+}
+
+static void forpp_float(t_forpp *x, t_float beg)
+{
+ x->x_beg = (int)beg;
+ if(x->x_end < x->x_beg)
+ x->x_incr = -1;
+ else
+ x->x_incr = 1;
+}
+
+static void forpp_ft1(t_forpp *x, t_float end)
+{
+ x->x_end = (int)end;
+ if(x->x_end < x->x_beg)
+ x->x_incr = -1;
+ else
+ x->x_incr = 1;
+}
+
+static void forpp_ft2(t_forpp *x, t_float delay)
+{
+ if(delay < 0.0)
+ delay = 0.0;
+ x->x_delay = delay;
+}
+
+static void forpp_list(t_forpp *x, t_symbol *s, int argc, t_atom *argv)
+{
+ if(argc == 2)
+ {
+ forpp_float(x, atom_getfloatarg(0, argc, argv));
+ forpp_ft1(x, atom_getfloatarg(1, argc, argv));
+ }
+ else if(argc == 3)
+ {
+ forpp_float(x, atom_getfloatarg(0, argc, argv));
+ forpp_ft1(x, atom_getfloatarg(1, argc, argv));
+ forpp_ft2(x, atom_getfloatarg(2, argc, argv));
+ }
+}
+
+static void *forpp_new(t_floatarg beg, t_floatarg end, t_floatarg delay)
+{
+ t_forpp *x = (t_forpp *)pd_new(forpp_class);
+
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft2"));
+ outlet_new(&x->x_obj, &s_float);
+ x->x_out_end = outlet_new(&x->x_obj, &s_bang);
+ x->x_clock = clock_new(x, (t_method)forpp_tick);
+ x->x_clock2 = clock_new(x, (t_method)forpp_tick2);
+ x->x_beg = (int)beg;
+ x->x_end = (int)end;
+ if(x->x_end < x->x_beg)
+ x->x_incr = -1;
+ else
+ x->x_incr = 1;
+ if(delay < 0.0)
+ delay = 0.0;
+ x->x_delay = delay;
+ x->x_cur = x->x_beg;
+ return(x);
+}
+
+static void forpp_ff(t_forpp *x)
+{
+ clock_free(x->x_clock);
+ clock_free(x->x_clock2);
+}
+
+void forpp_setup(void)
+{
+ forpp_class = class_new(gensym("for++"), (t_newmethod)forpp_new,
+ (t_method)forpp_ff, sizeof(t_forpp),
+ 0, A_DEFFLOAT, A_DEFFLOAT, A_DEFFLOAT, 0);
+ class_addbang(forpp_class, forpp_bang);
+ class_addfloat(forpp_class, forpp_float);
+ class_addlist(forpp_class, forpp_list);
+ class_addmethod(forpp_class, (t_method)forpp_start, gensym("start"), 0);
+ class_addmethod(forpp_class, (t_method)forpp_stop, gensym("stop"), 0);
+ class_addmethod(forpp_class, (t_method)forpp_ft1, gensym("ft1"), A_FLOAT, 0);
+ class_addmethod(forpp_class, (t_method)forpp_ft2, gensym("ft2"), A_FLOAT, 0);
+ class_sethelpsymbol(forpp_class, gensym("iemhelp/help-for++"));
+}
diff --git a/src/iemlib1/gate.c b/src/iemlib1/gate.c
new file mode 100644
index 0000000..957ee07
--- /dev/null
+++ b/src/iemlib1/gate.c
@@ -0,0 +1,84 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+/* -------------------------- gate ------------------------------ */
+
+typedef struct _gate
+{
+ t_object x_obj;
+ float x_state;
+} t_gate;
+
+static t_class *gate_class;
+
+static void gate_bang(t_gate *x)
+{
+ if(x->x_state != 0)
+ outlet_bang(x->x_obj.ob_outlet);
+}
+
+static void gate_pointer(t_gate *x, t_gpointer *gp)
+{
+ if(x->x_state != 0)
+ outlet_pointer(x->x_obj.ob_outlet, gp);
+}
+
+static void gate_float(t_gate *x, t_floatarg f)
+{
+ if(x->x_state != 0)
+ outlet_float(x->x_obj.ob_outlet, f);
+}
+
+static void gate_symbol(t_gate *x, t_symbol *s)
+{
+ if(x->x_state != 0)
+ outlet_symbol(x->x_obj.ob_outlet, s);
+}
+
+static void gate_list(t_gate *x, t_symbol *s, int argc, t_atom *argv)
+{
+ if(x->x_state != 0)
+ outlet_list(x->x_obj.ob_outlet, s, argc, argv);
+}
+
+static void gate_anything(t_gate *x, t_symbol *s, int argc, t_atom *argv)
+{
+ if(x->x_state != 0)
+ outlet_anything(x->x_obj.ob_outlet, s, argc, argv);
+}
+
+static void *gate_new(t_floatarg f)
+{
+ t_gate *x = (t_gate *)pd_new(gate_class);
+ floatinlet_new(&x->x_obj, &x->x_state);
+ outlet_new(&x->x_obj, 0);
+ x->x_state = (f==0.0)?0:1;
+ return (x);
+}
+
+void gate_setup(void)
+{
+ gate_class = class_new(gensym("gate"), (t_newmethod)gate_new, 0,
+ sizeof(t_gate), 0, A_DEFFLOAT, 0);
+ class_addbang(gate_class, gate_bang);
+ class_addpointer(gate_class, gate_pointer);
+ class_addfloat(gate_class, gate_float);
+ class_addsymbol(gate_class, gate_symbol);
+ class_addlist(gate_class, gate_list);
+ class_addanything(gate_class, gate_anything);
+ class_sethelpsymbol(gate_class, gensym("iemhelp/help-gate"));
+}
diff --git a/src/iemlib1/iemlib.h b/src/iemlib1/iemlib.h
new file mode 100644
index 0000000..cc882b1
--- /dev/null
+++ b/src/iemlib1/iemlib.h
@@ -0,0 +1,98 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifndef __IEMLIB_H__
+#define __IEMLIB_H__
+
+
+#define IS_A_POINTER(atom,index) ((atom+index)->a_type == A_POINTER)
+#define IS_A_FLOAT(atom,index) ((atom+index)->a_type == A_FLOAT)
+#define IS_A_SYMBOL(atom,index) ((atom+index)->a_type == A_SYMBOL)
+#define IS_A_DOLLAR(atom,index) ((atom+index)->a_type == A_DOLLAR)
+#define IS_A_DOLLSYM(atom,index) ((atom+index)->a_type == A_DOLLSYM)
+#define IS_A_SEMI(atom,index) ((atom+index)->a_type == A_SEMI)
+#define IS_A_COMMA(atom,index) ((atom+index)->a_type == A_COMMA)
+
+
+#ifdef NT
+int sys_noloadbang;
+//t_symbol *iemgui_key_sym=0;
+#include <io.h>
+#else
+extern int sys_noloadbang;
+//extern t_symbol *iemgui_key_sym;
+#include <unistd.h>
+#endif
+
+#define DEFDELVS 64
+#define XTRASAMPS 4
+#define SAMPBLK 4
+
+
+#define UNITBIT32 1572864. /* 3*2^19; bit 32 has place value 1 */
+
+ /* machine-dependent definitions. These ifdefs really
+ should have been by CPU type and not by operating system! */
+#ifdef IRIX
+ /* big-endian. Most significant byte is at low address in memory */
+#define HIOFFSET 0 /* word offset to find MSB */
+#define LOWOFFSET 1 /* word offset to find LSB */
+#define int32 long /* a data type that has 32 bits */
+#else
+#ifdef MSW
+ /* little-endian; most significant byte is at highest address */
+#define HIOFFSET 1
+#define LOWOFFSET 0
+#define int32 long
+#else
+#ifdef __FreeBSD__
+#include <machine/endian.h>
+#if BYTE_ORDER == LITTLE_ENDIAN
+#define HIOFFSET 1
+#define LOWOFFSET 0
+#else
+#define HIOFFSET 0 /* word offset to find MSB */
+#define LOWOFFSET 1 /* word offset to find LSB */
+#endif /* BYTE_ORDER */
+#include <sys/types.h>
+#define int32 int32_t
+#endif
+#ifdef __linux__
+
+#include <endian.h>
+
+#if !defined(__BYTE_ORDER) || !defined(__LITTLE_ENDIAN)
+#error No byte order defined
+#endif
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define HIOFFSET 1
+#define LOWOFFSET 0
+#else
+#define HIOFFSET 0 /* word offset to find MSB */
+#define LOWOFFSET 1 /* word offset to find LSB */
+#endif /* __BYTE_ORDER */
+
+#include <sys/types.h>
+#define int32 int32_t
+
+#else
+#ifdef __APPLE__
+#define HIOFFSET 0 /* word offset to find MSB */
+#define LOWOFFSET 1 /* word offset to find LSB */
+#define int32 int /* a data type that has 32 bits */
+
+#endif /* __APPLE__ */
+#endif /* __linux__ */
+#endif /* MSW */
+#endif /* SGI */
+
+union tabfudge
+{
+ double tf_d;
+ int32 tf_i[2];
+};
+
+#endif
diff --git a/src/iemlib1/iemlib1.c b/src/iemlib1/iemlib1.c
new file mode 100644
index 0000000..3700c40
--- /dev/null
+++ b/src/iemlib1/iemlib1.c
@@ -0,0 +1,82 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+
+static t_class *iemlib1_class;
+
+static void *iemlib1_new(void)
+{
+ t_object *x = (t_object *)pd_new(iemlib1_class);
+
+ return (x);
+}
+
+void biquad_freq_resp_setup(void);
+void db2v_setup(void);
+void f2note_setup(void);
+void forpp_setup(void);
+void gate_setup(void);
+void sigfilter_setup(void);
+void sigFIR_setup(void);
+void sighml_shelf_setup(void);
+void sigiem_cot4_setup(void);
+void sigiem_delay_setup(void);
+void sigiem_sqrt4_setup(void);
+void sigiem_pow4_setup(void);
+void siglp1_t_setup(void);
+void sigmov_avrg_kern_setup(void);
+void sigpara_bp2_setup(void);
+void sigpeakenv_setup(void);
+void sigprvu_setup(void);
+void sigpvu_setup(void);
+void sigrvu_setup(void);
+void sigsin_phase_setup(void);
+void sigvcf_filter_setup(void);
+void soundfile_info_setup(void);
+void split_setup(void);
+void v2db_setup(void);
+
+/* ------------------------ setup routine ------------------------- */
+
+void iemlib1_setup(void)
+{
+ iemlib1_class = class_new(gensym("iemlib1"), iemlib1_new, 0,
+ sizeof(t_object), CLASS_NOINLET, 0);
+
+ biquad_freq_resp_setup();
+ db2v_setup();
+ f2note_setup();
+ forpp_setup();
+ gate_setup();
+ sigfilter_setup();
+ sigFIR_setup();
+ sighml_shelf_setup();
+ sigiem_cot4_setup();
+ sigiem_delay_setup();
+ sigiem_sqrt4_setup();
+ sigiem_pow4_setup();
+ siglp1_t_setup();
+ sigmov_avrg_kern_setup();
+ sigpara_bp2_setup();
+ sigpeakenv_setup();
+ sigprvu_setup();
+ sigpvu_setup();
+ sigrvu_setup();
+ sigsin_phase_setup();
+ sigvcf_filter_setup();
+ soundfile_info_setup();
+ split_setup();
+ v2db_setup();
+
+ post("iemlib1 (R-1.15) library loaded!");
+}
diff --git a/src/iemlib1/iemlib1.dsp b/src/iemlib1/iemlib1.dsp
new file mode 100644
index 0000000..7d63ad2
--- /dev/null
+++ b/src/iemlib1/iemlib1.dsp
@@ -0,0 +1,85 @@
+# Microsoft Developer Studio Project File - Name="iemlib1" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** NICHT BEARBEITEN **
+
+# TARGTYPE "Win32 (x86) External Target" 0x0106
+
+CFG=iemlib1 - Win32 Debug
+!MESSAGE Dies ist kein gültiges Makefile. Zum Erstellen dieses Projekts mit NMAKE
+!MESSAGE verwenden Sie den Befehl "Makefile exportieren" und führen Sie den Befehl
+!MESSAGE
+!MESSAGE NMAKE /f "iemlib1.mak".
+!MESSAGE
+!MESSAGE Sie können beim Ausführen von NMAKE eine Konfiguration angeben
+!MESSAGE durch Definieren des Makros CFG in der Befehlszeile. Zum Beispiel:
+!MESSAGE
+!MESSAGE NMAKE /f "iemlib1.mak" CFG="iemlib1 - Win32 Debug"
+!MESSAGE
+!MESSAGE Für die Konfiguration stehen zur Auswahl:
+!MESSAGE
+!MESSAGE "iemlib1 - Win32 Release" (basierend auf "Win32 (x86) External Target")
+!MESSAGE "iemlib1 - Win32 Debug" (basierend auf "Win32 (x86) External Target")
+!MESSAGE
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+
+!IF "$(CFG)" == "iemlib1 - Win32 Release"
+
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "Release"
+# PROP BASE Intermediate_Dir "Release"
+# PROP BASE Cmd_Line "NMAKE /f makefile_win"
+# PROP BASE Rebuild_Opt "/a"
+# PROP BASE Target_File "makefile_win.exe"
+# PROP BASE Bsc_Name "makefile_win.bsc"
+# PROP BASE Target_Dir ""
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Release"
+# PROP Intermediate_Dir "Release"
+# PROP Cmd_Line "NMAKE /f makefile_win"
+# PROP Rebuild_Opt "/a"
+# PROP Target_File "iemlib1.exe"
+# PROP Bsc_Name "iemlib1.bsc"
+# PROP Target_Dir ""
+
+!ELSEIF "$(CFG)" == "iemlib1 - Win32 Debug"
+
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "Debug"
+# PROP BASE Intermediate_Dir "Debug"
+# PROP BASE Cmd_Line "NMAKE /f makefile_win"
+# PROP BASE Rebuild_Opt "/a"
+# PROP BASE Target_File "makefile_win.exe"
+# PROP BASE Bsc_Name "makefile_win.bsc"
+# PROP BASE Target_Dir ""
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Debug"
+# PROP Intermediate_Dir "Debug"
+# PROP Cmd_Line "NMAKE /f makefile_win"
+# PROP Rebuild_Opt "/a"
+# PROP Target_File "iemlib1.exe"
+# PROP Bsc_Name "iemlib1.bsc"
+# PROP Target_Dir ""
+
+!ENDIF
+
+# Begin Target
+
+# Name "iemlib1 - Win32 Release"
+# Name "iemlib1 - Win32 Debug"
+
+!IF "$(CFG)" == "iemlib1 - Win32 Release"
+
+!ELSEIF "$(CFG)" == "iemlib1 - Win32 Debug"
+
+!ENDIF
+
+# Begin Source File
+
+SOURCE=.\makefile_win
+# End Source File
+# End Target
+# End Project
diff --git a/src/iemlib1/iemlib1.dsw b/src/iemlib1/iemlib1.dsw
new file mode 100644
index 0000000..c8260a7
--- /dev/null
+++ b/src/iemlib1/iemlib1.dsw
@@ -0,0 +1,29 @@
+Microsoft Developer Studio Workspace File, Format Version 6.00
+# WARNUNG: DIESE ARBEITSBEREICHSDATEI DARF NICHT BEARBEITET ODER GELÖSCHT WERDEN!
+
+###############################################################################
+
+Project: "iemlib1"=.\iemlib1.dsp - Package Owner=<4>
+
+Package=<5>
+{{{
+}}}
+
+Package=<4>
+{{{
+}}}
+
+###############################################################################
+
+Global:
+
+Package=<5>
+{{{
+}}}
+
+Package=<3>
+{{{
+}}}
+
+###############################################################################
+
diff --git a/src/iemlib1/makefile b/src/iemlib1/makefile
new file mode 100644
index 0000000..c8148cf
--- /dev/null
+++ b/src/iemlib1/makefile
@@ -0,0 +1,72 @@
+current: all
+
+.SUFFIXES: .pd_linux
+
+INCLUDE = -I. -I/usr/local/src/pd/src
+
+LDFLAGS = -export-dynamic -shared
+LIB = -ldl -lm -lpthread
+
+#select either the DBG and OPT compiler flags below:
+
+CFLAGS = -DPD -DUNIX -Wall -W -Werror -Wno-unused \
+ -Wno-parentheses -Wno-switch -O6 -funroll-loops -fomit-frame-pointer \
+ -DDL_OPEN
+
+SYSTEM = $(shell uname -m)
+
+# the sources
+
+SRC = biquad_freq_resp.c \
+ db2v.c \
+ f2note.c \
+ forpp.c \
+ gate.c \
+ sigfilter.c \
+ sigFIR.c \
+ sighml_shelf.c \
+ sigiem_cot4.c \
+ sigiem_delay.c \
+ sigiem_pow4.c \
+ sigiem_sqrt4.c \
+ siglp1_t.c \
+ sigmov_avrg_kern.c \
+ sigpara_bp2.c \
+ sigpeakenv.c \
+ sigprvu.c \
+ sigpvu.c \
+ sigrvu.c \
+ sigsin_phase.c \
+ sigvcf_filter.c \
+ soundfile_info.c \
+ split.c \
+ v2db.c \
+ iemlib1.c
+
+TARGET = iemlib1.pd_linux
+
+
+OBJ = $(SRC:.c=.o)
+
+#
+# ------------------ targets ------------------------------------
+#
+
+clean:
+ rm ../../lib/$(TARGET)
+ rm *.o
+
+all: $(OBJ)
+ @echo :: $(OBJ)
+ ld $(LDFLAGS) -o $(TARGET) *.o $(LIB)
+ strip --strip-unneeded $(TARGET)
+ mv $(TARGET) ../../lib
+ rm *.o
+
+$(OBJ) : %.o : %.c
+ touch $*.c
+ cc $(CFLAGS) $(INCLUDE) -c -o $*.o $*.c
+
+
+
+
diff --git a/src/iemlib1/makefile.darwin b/src/iemlib1/makefile.darwin
new file mode 100644
index 0000000..338310e
--- /dev/null
+++ b/src/iemlib1/makefile.darwin
@@ -0,0 +1,72 @@
+current: all
+
+.SUFFIXES: .pd_darwin
+
+INCLUDE = -I. -I/usr/local/src/pd-0.37-1test6/src
+
+LDFLAGS = -export-dynamic -shared
+LIB = -ldl -lm -lpthread
+
+#select either the DBG and OPT compiler flags below:
+
+CFLAGS = -DPD -DUNIX -g -Wall -W -Werror -Wno-unused \
+ -Wno-parentheses -Wno-switch -O2 $(INCLUDE) $(UCFLAGS) $(AFLAGS) \
+
+MACOSXLINKFLAGS = -bundle -bundle_loader /usr/local/src/pd-0.37-1test6/bin/pd
+
+SYSTEM = $(shell uname -m)
+
+# the sources
+
+SRC = biquad_freq_resp.c \
+ db2v.c \
+ f2note.c \
+ forpp.c \
+ gate.c \
+ sigfilter.c \
+ sigFIR.c \
+ sighml_shelf.c \
+ sigiem_cot4.c \
+ sigiem_delay.c \
+ sigiem_pow4.c \
+ sigiem_sqrt4.c \
+ siglp1_t.c \
+ sigmov_avrg_kern.c \
+ sigpara_bp2.c \
+ sigpeakenv.c \
+ sigprvu.c \
+ sigpvu.c \
+ sigrvu.c \
+ sigsin_phase.c \
+ sigvcf_filter.c \
+ soundfile_info.c \
+ split.c \
+ v2db.c \
+ iemlib1.c
+
+TARGET = iemlib1.pd_darwin
+
+
+OBJ = $(SRC:.c=.o)
+
+#
+# ------------------ targets ------------------------------------
+#
+
+clean:
+ rm ../../lib/$(TARGET)
+ rm *.o
+
+all: $(OBJ)
+ @echo :: $(OBJ)
+ $(CC) $(MACOSXLINKFLAGS) -o $(TARGET) *.o $(LIB)
+ strip --strip-unneeded $(TARGET)
+ mv $(TARGET) ../../lib
+
+$(OBJ) : %.o : %.c
+ touch $*.c
+ $(CC) $(CFLAGS) -DPD $(INCLUDE) -c -o $*.o $*.c
+
+
+
+
diff --git a/src/iemlib1/makefile_win b/src/iemlib1/makefile_win
new file mode 100644
index 0000000..8ab353c
--- /dev/null
+++ b/src/iemlib1/makefile_win
@@ -0,0 +1,61 @@
+
+all: ..\..\lib\iemlib1.dll
+
+VIS_CPP_PATH = "C:\Programme\Microsoft Visual Studio\Vc98"
+
+PD_INST_PATH = "C:\Programme\pd"
+
+PD_WIN_INCLUDE_PATH = /I. /I$(PD_INST_PATH)\src /I$(VIS_CPP_PATH)\include
+
+PD_WIN_C_FLAGS = /nologo /W3 /WX /DMSW /DNT /DPD /DWIN32 /DWINDOWS /Ox -DPA_LITTLE_ENDIAN
+
+PD_WIN_L_FLAGS = /nologo
+
+PD_WIN_LIB = /NODEFAULTLIB:libc /NODEFAULTLIB:oldnames /NODEFAULTLIB:kernel /NODEFAULTLIB:uuid \
+ $(VIS_CPP_PATH)\lib\libc.lib \
+ $(VIS_CPP_PATH)\lib\oldnames.lib \
+ $(VIS_CPP_PATH)\lib\kernel32.lib \
+ $(VIS_CPP_PATH)\lib\wsock32.lib \
+ $(VIS_CPP_PATH)\lib\winmm.lib \
+ $(PD_INST_PATH)\bin\pthreadVC.lib \
+ $(PD_INST_PATH)\bin\pd.lib
+
+
+SRC = biquad_freq_resp.c \
+ db2v.c \
+ f2note.c \
+ forpp.c \
+ gate.c \
+ sigfilter.c \
+ sigFIR.c \
+ sighml_shelf.c \
+ sigiem_cot4.c \
+ sigiem_delay.c \
+ sigiem_sqrt4.c \
+ sigiem_pow4.c \
+ siglp1_t.c \
+ sigmov_avrg_kern.c \
+ sigpara_bp2.c \
+ sigpeakenv.c \
+ sigprvu.c \
+ sigpvu.c \
+ sigrvu.c \
+ sigsin_phase.c \
+ sigvcf_filter.c \
+ soundfile_info.c \
+ split.c \
+ v2db.c \
+ iemlib1.c
+
+
+OBJ = $(SRC:.c=.obj)
+
+.c.obj:
+ cl $(PD_WIN_C_FLAGS) $(PD_WIN_INCLUDE_PATH) /c $*.c
+
+..\..\lib\iemlib1.dll: $(OBJ)
+ link $(PD_WIN_L_FLAGS) /dll /export:iemlib1_setup \
+ /out:..\..\lib\iemlib1.dll $(OBJ) $(PD_WIN_LIB)
+
+clean:
+ del *.obj
diff --git a/src/iemlib1/sigFIR.c b/src/iemlib1/sigFIR.c
new file mode 100644
index 0000000..51c9de0
--- /dev/null
+++ b/src/iemlib1/sigFIR.c
@@ -0,0 +1,177 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+
+/* ---------- FIR~ - FIR-filter with table~-coef ----------- */
+
+typedef struct sigFIR
+{
+ t_object x_obj;
+ float *x_coef_beg;
+ float *x_history_beg;
+ int x_rw_index;
+ int x_fir_order;
+ t_symbol *x_table_name;
+ float x_msi;
+} t_sigFIR;
+
+t_class *sigFIR_class;
+
+static t_int *sigFIR_perform(t_int *w)
+{
+ float *in = (float *)(w[1]);
+ float *out = (float *)(w[2]);
+ t_sigFIR *x = (t_sigFIR *)(w[3]);
+ int n = (t_int)(w[4]);
+ int rw_index = x->x_rw_index;
+ int i, j;
+ int order = x->x_fir_order;
+ int ord16 = order / 16;
+ float sum=0.0f;
+ float *coef = x->x_coef_beg;
+ float *write_hist1=x->x_history_beg;
+ float *write_hist2;
+ float *read_hist;
+ float *coef_vec;
+ float *hist_vec;
+
+ if(!coef)
+ goto sigFIRperfzero;
+
+ write_hist1 = x->x_history_beg;
+ write_hist2 = write_hist1 + order;
+ read_hist = write_hist2;
+
+ for(i=0; i<n; i++)
+ {
+ write_hist1[rw_index] = in[i];
+ write_hist2[rw_index] = in[i];
+
+ sum = 0.0f;
+ coef_vec = coef;
+ hist_vec = &read_hist[rw_index];
+ for(j=0; j<ord16; j++)
+ {
+ sum += coef_vec[0] * hist_vec[0];
+ sum += coef_vec[1] * hist_vec[-1];
+ sum += coef_vec[2] * hist_vec[-2];
+ sum += coef_vec[3] * hist_vec[-3];
+ sum += coef_vec[4] * hist_vec[-4];
+ sum += coef_vec[5] * hist_vec[-5];
+ sum += coef_vec[6] * hist_vec[-6];
+ sum += coef_vec[7] * hist_vec[-7];
+ sum += coef_vec[8] * hist_vec[-8];
+ sum += coef_vec[9] * hist_vec[-9];
+ sum += coef_vec[10] * hist_vec[-10];
+ sum += coef_vec[11] * hist_vec[-11];
+ sum += coef_vec[12] * hist_vec[-12];
+ sum += coef_vec[13] * hist_vec[-13];
+ sum += coef_vec[14] * hist_vec[-14];
+ sum += coef_vec[15] * hist_vec[-15];
+ coef_vec += 16;
+ hist_vec -= 16;
+ }
+ for(j=ord16*16; j<order; j++)
+ {
+ sum += coef[j] * read_hist[rw_index-j];
+ }
+ out[i] = sum;
+
+ rw_index++;
+ if(rw_index >= order)
+ rw_index -= order;
+ }
+
+ x->x_rw_index = rw_index;
+ return(w+5);
+
+sigFIRperfzero:
+
+ while(n--)
+ *out++ = 0.0f;
+ return(w+5);
+}
+
+void sigFIR_set(t_sigFIR *x, t_symbol *table_name, t_floatarg forder)
+{
+ t_garray *ga;
+ int table_size;
+ int order = (int)forder;
+
+ x->x_table_name = table_name;
+ if(!(ga = (t_garray *)pd_findbyclass(x->x_table_name, garray_class)))
+ {
+ if(*table_name->s_name)
+ error("FIR~: %s: no such table~", x->x_table_name->s_name);
+ x->x_coef_beg = 0;
+ }
+ else if(!garray_getfloatarray(ga, &table_size, &x->x_coef_beg))
+ {
+ error("%s: bad template for FIR~", x->x_table_name->s_name);
+ x->x_coef_beg = 0;
+ }
+ else if(table_size < order)
+ {
+ error("FIR~: tablesize %d < order %d !!!!", table_size, order);
+ x->x_coef_beg = 0;
+ }
+ else
+ garray_usedindsp(ga);
+ x->x_rw_index = 0;
+ if(order > x->x_fir_order)/* resize */
+ x->x_history_beg = (float *)resizebytes(x->x_history_beg, 2*x->x_fir_order*sizeof(float), 2*order*sizeof(float));
+ x->x_fir_order = order;
+}
+
+static void sigFIR_dsp(t_sigFIR *x, t_signal **sp)
+{
+ sigFIR_set(x, x->x_table_name, x->x_fir_order);
+ dsp_add(sigFIR_perform, 4, sp[0]->s_vec, sp[1]->s_vec, x, sp[0]->s_n);
+}
+
+static void *sigFIR_new(t_symbol *ref, t_floatarg np)
+{
+ t_sigFIR *x = (t_sigFIR *)pd_new(sigFIR_class);
+
+ outlet_new(&x->x_obj, &s_signal);
+ x->x_msi = 0;
+ x->x_table_name = ref;
+ x->x_coef_beg = 0;
+ if((int)np < 1)
+ np = 1.0;
+ x->x_fir_order = (int)np;
+ x->x_history_beg = (float *)getbytes((2*x->x_fir_order)*sizeof(float));
+ x->x_rw_index = 0;
+ return(x);
+}
+
+static void sigFIR_free(t_sigFIR *x)
+{
+ if(x->x_history_beg)
+ freebytes(x->x_history_beg, (2*x->x_fir_order)*sizeof(float));
+}
+
+void sigFIR_setup(void)
+{
+ sigFIR_class = class_new(gensym("FIR~"), (t_newmethod)sigFIR_new,
+ (t_method)sigFIR_free, sizeof(t_sigFIR), 0, A_DEFSYM, A_DEFFLOAT, 0);
+ CLASS_MAINSIGNALIN(sigFIR_class, t_sigFIR, x_msi);
+ class_addmethod(sigFIR_class, (t_method)sigFIR_dsp, gensym("dsp"), 0);
+ class_addmethod(sigFIR_class, (t_method)sigFIR_set,
+ gensym("set"), A_SYMBOL, A_FLOAT, 0);
+ class_sethelpsymbol(sigFIR_class, gensym("iemhelp/help-FIR~"));
+}
diff --git a/src/iemlib1/sigfilter.c b/src/iemlib1/sigfilter.c
new file mode 100644
index 0000000..6a05206
--- /dev/null
+++ b/src/iemlib1/sigfilter.c
@@ -0,0 +1,822 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+
+/* ---------- filter~ - slow dynamic filter 1. and 2. order ----------- */
+
+typedef struct sigfilter
+{
+ t_object x_obj;
+ float wn1;
+ float wn2;
+ float a0;
+ float a1;
+ float a2;
+ float b1;
+ float b2;
+ float sr;
+ float cur_f;
+ float cur_l;
+ float cur_a;
+ float cur_b;
+ float delta_f;
+ float delta_a;
+ float delta_b;
+ float end_f;
+ float end_a;
+ float end_b;
+ float ticks_per_interpol_time;
+ float rcp_ticks;
+ float interpol_time;
+ int ticks;
+ int counter_f;
+ int counter_a;
+ int counter_b;
+ int inv;
+ int hp;
+ int first_order;
+ int event_mask;
+ void (*calc)();
+ void *x_debug_outlet;
+ t_atom x_at[5];
+ float x_msi;
+} t_sigfilter;
+
+t_class *sigfilter_class;
+
+static void sigfilter_snafu(t_sigfilter *x)
+{
+
+}
+
+static void sigfilter_lp1(t_sigfilter *x)
+{
+ float al;
+
+ al = x->cur_a * x->cur_l;
+ x->a0 = 1.0f/(1.0f + al);
+ x->a1 = x->a0;
+ x->b1 = (al - 1.0f)*x->a0;
+}
+
+static void sigfilter_lp2(t_sigfilter *x)
+{
+ float l, al, bl2, rcp;
+
+ l = x->cur_l;
+ al = l*x->cur_a;
+ bl2 = l*l*x->cur_b + 1.0f;
+ rcp = 1.0f/(al + bl2);
+ x->a0 = rcp;
+ x->a1 = 2.0f*rcp;
+ x->a2 = x->a0;
+ x->b1 = rcp*2.0f*(bl2 - 2.0f);
+ x->b2 = rcp*(al - bl2);
+}
+
+static void sigfilter_hp1(t_sigfilter *x)
+{
+ float al, rcp;
+
+ al = x->cur_a * x->cur_l;
+ rcp = 1.0f/(1.0f + al);
+ x->a0 = rcp*al;
+ x->a1 = -x->a0;
+ x->b1 = rcp*(al - 1.0f);
+}
+
+static void sigfilter_hp2(t_sigfilter *x)
+{
+ float l, al, bl2, rcp;
+
+ l = x->cur_l;
+ bl2 = l*l*x->cur_b + 1.0f;
+ al = l*x->cur_a;
+ rcp = 1.0f/(al + bl2);
+ x->a0 = rcp*(bl2 - 1.0f);
+ x->a1 = -2.0f*x->a0;
+ x->a2 = x->a0;
+ x->b1 = rcp*2.0f*(bl2 - 2.0f);
+ x->b2 = rcp*(al - bl2);
+}
+
+static void sigfilter_rp2(t_sigfilter *x)
+{
+ float l, al, l2, rcp;
+
+ l = x->cur_l;
+ l2 = l*l + 1.0f;
+ al = l*x->cur_a;
+ rcp = 1.0f/(al + l2);
+ x->a0 = rcp*l;
+ x->a2 = -x->a0;
+ x->b1 = rcp*2.0f*(l2 - 2.0f);
+ x->b2 = rcp*(al - l2);
+}
+
+static void sigfilter_bp2(t_sigfilter *x)
+{
+ float l, al, l2, rcp;
+
+ l = x->cur_l;
+ l2 = l*l + 1.0f;
+ al = l*x->cur_a;
+ rcp = 1.0f/(al + l2);
+ x->a0 = rcp*al;
+ x->a2 = -x->a0;
+ x->b1 = rcp*2.0f*(l2 - 2.0f);
+ x->b2 = rcp*(al - l2);
+}
+
+static void sigfilter_bs2(t_sigfilter *x)
+{
+ float l, al, l2, rcp;
+
+ l = x->cur_l;
+ l2 = l*l + 1.0f;
+ al = l*x->cur_a;
+ rcp = 1.0f/(al + l2);
+ x->a0 = rcp*l2;
+ x->a1 = rcp*2.0f*(2.0f - l2);
+ x->a2 = x->a0;
+ x->b1 = -x->a1;
+ x->b2 = rcp*(al - l2);
+}
+
+static void sigfilter_rpw2(t_sigfilter *x)
+{
+ float l, al, l2, rcp;
+
+ l = x->cur_l;
+ l2 = l*l + 1.0f;
+ al = l*x->cur_a/x->cur_f;
+ rcp = 1.0f/(al + l2);
+ x->a0 = rcp*l;
+ x->a2 = -x->a0;
+ x->b1 = rcp*2.0f*(l2 - 2.0f);
+ x->b2 = rcp*(al - l2);
+}
+
+static void sigfilter_bpw2(t_sigfilter *x)
+{
+ float l, al, l2, rcp;
+
+ l = x->cur_l;
+ l2 = l*l + 1.0f;
+ al = l*x->cur_a/x->cur_f;
+ rcp = 1.0f/(al + l2);
+ x->a0 = rcp*al;
+ x->a2 = -x->a0;
+ x->b1 = rcp*2.0f*(l2 - 2.0f);
+ x->b2 = rcp*(al - l2);
+}
+
+static void sigfilter_bsw2(t_sigfilter *x)
+{
+ float l, al, l2, rcp;
+
+ l = x->cur_l;
+ l2 = l*l + 1.0f;
+ al = l*x->cur_a/x->cur_f;
+ rcp = 1.0f/(al + l2);
+ x->a0 = rcp*l2;
+ x->a1 = rcp*2.0f*(2.0f - l2);
+ x->a2 = x->a0;
+ x->b1 = -x->a1;
+ x->b2 = rcp*(al - l2);
+}
+
+static void sigfilter_ap1(t_sigfilter *x)
+{
+ float al;
+
+ al = x->cur_a * x->cur_l;
+ x->a0 = (1.0f - al)/(1.0f + al);
+ x->b1 = -x->a0;
+}
+
+static void sigfilter_ap2(t_sigfilter *x)
+{
+ float l, al, bl2, rcp;
+
+ l = x->cur_l;
+ bl2 = l*l*x->cur_b + 1.0f;
+ al = l*x->cur_a;
+ rcp = 1.0f/(al + bl2);
+ x->a1 = rcp*2.0f*(2.0f - bl2);
+ x->a0 = rcp*(bl2 - al);
+ x->b1 = -x->a1;
+ x->b2 = -x->a0;
+}
+
+/*static void sigfilter_bp2(t_sigfilter *x)
+{
+ float l, al, l2, rcp;
+
+ l = x->cur_l;
+ l2 = l*l + 1.0;
+ al = l*x->cur_a;
+ rcp = 1.0f/(al + l2);
+ x->a0 = rcp*al;
+ x->a2 = -x->a0;
+ x->b1 = rcp*2.0f*(2.0f - l2);
+ x->b2 = rcp*(l2 - al);
+}*/
+
+static void sigfilter_dsp_tick(t_sigfilter *x)
+{
+ if(x->event_mask)
+ {
+ if(x->counter_f)
+ {
+ float l, si, co;
+
+ if(x->counter_f <= 1)
+ {
+ x->cur_f = x->end_f;
+ x->counter_f = 0;
+ x->event_mask &= 6;/*set event_mask_bit 0 = 0*/
+ }
+ else
+ {
+ x->counter_f--;
+ x->cur_f *= x->delta_f;
+ }
+ l = x->cur_f * x->sr;
+ if(l < 1.0e-20f)
+ x->cur_l = 1.0e20f;
+ else if(l > 1.57079632f)
+ x->cur_l = 0.0f;
+ else
+ {
+ si = sin(l);
+ co = cos(l);
+ x->cur_l = co/si;
+ }
+ }
+ if(x->counter_a)
+ {
+ if(x->counter_a <= 1)
+ {
+ x->cur_a = x->end_a;
+ x->counter_a = 0;
+ x->event_mask &= 5;/*set event_mask_bit 1 = 0*/
+ }
+ else
+ {
+ x->counter_a--;
+ x->cur_a *= x->delta_a;
+ }
+ }
+ if(x->counter_b)
+ {
+ if(x->counter_b <= 1)
+ {
+ x->cur_b = x->end_b;
+ x->counter_b = 0;
+ x->event_mask &= 3;/*set event_mask_bit 2 = 0*/
+ }
+ else
+ {
+ x->counter_b--;
+ x->cur_b *= x->delta_b;
+ }
+ }
+
+ (*(x->calc))(x);
+
+ /* stability check */
+ if(x->first_order)
+ {
+ if(x->b1 <= -0.9999998f)
+ x->b1 = -0.9999998f;
+ else if(x->b1 >= 0.9999998f)
+ x->b1 = 0.9999998f;
+ }
+ else
+ {
+ float discriminant = x->b1 * x->b1 + 4.0f * x->b2;
+
+ if(x->b1 <= -1.9999996f)
+ x->b1 = -1.9999996f;
+ else if(x->b1 >= 1.9999996f)
+ x->b1 = 1.9999996f;
+
+ if(x->b2 <= -0.9999998f)
+ x->b2 = -0.9999998f;
+ else if(x->b2 >= 0.9999998f)
+ x->b2 = 0.9999998f;
+
+ if(discriminant >= 0.0f)
+ {
+ if(0.9999998f - x->b1 - x->b2 < 0.0f)
+ x->b2 = 0.9999998f - x->b1;
+ if(0.9999998f + x->b1 - x->b2 < 0.0f)
+ x->b2 = 0.9999998f + x->b1;
+ }
+ }
+ }
+}
+
+static t_int *sigfilter_perform_2o(t_int *w)
+{
+ float *in = (float *)(w[1]);
+ float *out = (float *)(w[2]);
+ t_sigfilter *x = (t_sigfilter *)(w[3]);
+ int i, n = (t_int)(w[4]);
+ float wn0, wn1=x->wn1, wn2=x->wn2;
+ float a0=x->a0, a1=x->a1, a2=x->a2;
+ float b1=x->b1, b2=x->b2;
+
+ sigfilter_dsp_tick(x);
+ for(i=0; i<n; i++)
+ {
+ wn0 = *in++ + b1*wn1 + b2*wn2;
+ *out++ = a0*wn0 + a1*wn1 + a2*wn2;
+ wn2 = wn1;
+ wn1 = wn0;
+ }
+ /* NAN protect */
+ if(PD_BADFLOAT(wn2))
+ wn2 = 0.0f;
+ if(PD_BADFLOAT(wn1))
+ wn1 = 0.0f;
+
+ x->wn1 = wn1;
+ x->wn2 = wn2;
+ return(w+5);
+}
+/* yn0 = *out;
+ xn0 = *in;
+ *************
+ yn0 = a0*xn0 + a1*xn1 + a2*xn2 + b1*yn1 + b2*yn2;
+ yn2 = yn1;
+ yn1 = yn0;
+ xn2 = xn1;
+ xn1 = xn0;
+ *************************
+ y/x = (a0 + a1*z-1 + a2*z-2)/(1 - b1*z-1 - b2*z-2);*/
+
+static t_int *sigfilter_perf8_2o(t_int *w)
+{
+ float *in = (float *)(w[1]);
+ float *out = (float *)(w[2]);
+ t_sigfilter *x = (t_sigfilter *)(w[3]);
+ int i, n = (t_int)(w[4]);
+ float wn[10];
+ float a0=x->a0, a1=x->a1, a2=x->a2;
+ float b1=x->b1, b2=x->b2;
+
+ sigfilter_dsp_tick(x);
+ wn[0] = x->wn2;
+ wn[1] = x->wn1;
+ for(i=0; i<n; i+=8, in+=8, out+=8)
+ {
+ wn[2] = in[0] + b1*wn[1] + b2*wn[0];
+ out[0] = a0*wn[2] + a1*wn[1] + a2*wn[0];
+ wn[3] = in[1] + b1*wn[2] + b2*wn[1];
+ out[1] = a0*wn[3] + a1*wn[2] + a2*wn[1];
+ wn[4] = in[2] + b1*wn[3] + b2*wn[2];
+ out[2] = a0*wn[4] + a1*wn[3] + a2*wn[2];
+ wn[5] = in[3] + b1*wn[4] + b2*wn[3];
+ out[3] = a0*wn[5] + a1*wn[4] + a2*wn[3];
+ wn[6] = in[4] + b1*wn[5] + b2*wn[4];
+ out[4] = a0*wn[6] + a1*wn[5] + a2*wn[4];
+ wn[7] = in[5] + b1*wn[6] + b2*wn[5];
+ out[5] = a0*wn[7] + a1*wn[6] + a2*wn[5];
+ wn[8] = in[6] + b1*wn[7] + b2*wn[6];
+ out[6] = a0*wn[8] + a1*wn[7] + a2*wn[6];
+ wn[9] = in[7] + b1*wn[8] + b2*wn[7];
+ out[7] = a0*wn[9] + a1*wn[8] + a2*wn[7];
+ wn[0] = wn[8];
+ wn[1] = wn[9];
+ }
+ /* NAN protect */
+ if(PD_BADFLOAT(wn[0]))
+ wn[0] = 0.0f;
+ if(PD_BADFLOAT(wn[1]))
+ wn[1] = 0.0f;
+
+ x->wn1 = wn[1];
+ x->wn2 = wn[0];
+ return(w+5);
+}
+
+static t_int *sigfilter_perform_1o(t_int *w)
+{
+ float *in = (float *)(w[1]);
+ float *out = (float *)(w[2]);
+ t_sigfilter *x = (t_sigfilter *)(w[3]);
+ int i, n = (t_int)(w[4]);
+ float wn0, wn1=x->wn1;
+ float a0=x->a0, a1=x->a1;
+ float b1=x->b1;
+
+ sigfilter_dsp_tick(x);
+ for(i=0; i<n; i++)
+ {
+ wn0 = *in++ + b1*wn1;
+ *out++ = a0*wn0 + a1*wn1;
+ wn1 = wn0;
+ }
+ /* NAN protect */
+ if(PD_BADFLOAT(wn1))
+ wn1 = 0.0f;
+
+ x->wn1 = wn1;
+ return(w+5);
+}
+
+static t_int *sigfilter_perf8_1o(t_int *w)
+{
+ float *in = (float *)(w[1]);
+ float *out = (float *)(w[2]);
+ t_sigfilter *x = (t_sigfilter *)(w[3]);
+ int i, n = (t_int)(w[4]);
+ float wn[9];
+ float a0=x->a0, a1=x->a1;
+ float b1=x->b1;
+
+ sigfilter_dsp_tick(x);
+ wn[0] = x->wn1;
+ for(i=0; i<n; i+=8, in+=8, out+=8)
+ {
+ wn[1] = in[0] + b1*wn[0];
+ out[0] = a0*wn[1] + a1*wn[0];
+ wn[2] = in[1] + b1*wn[1];
+ out[1] = a0*wn[2] + a1*wn[1];
+ wn[3] = in[2] + b1*wn[2];
+ out[2] = a0*wn[3] + a1*wn[2];
+ wn[4] = in[3] + b1*wn[3];
+ out[3] = a0*wn[4] + a1*wn[3];
+ wn[5] = in[4] + b1*wn[4];
+ out[4] = a0*wn[5] + a1*wn[4];
+ wn[6] = in[5] + b1*wn[5];
+ out[5] = a0*wn[6] + a1*wn[5];
+ wn[7] = in[6] + b1*wn[6];
+ out[6] = a0*wn[7] + a1*wn[6];
+ wn[8] = in[7] + b1*wn[7];
+ out[7] = a0*wn[8] + a1*wn[7];
+ wn[0] = wn[8];
+ }
+ /* NAN protect */
+ if(PD_BADFLOAT(wn[0]))
+ wn[0] = 0.0f;
+
+ x->wn1 = wn[0];
+ return(w+5);
+}
+
+static void sigfilter_ft4(t_sigfilter *x, t_floatarg t)
+{
+ int i = (int)((x->ticks_per_interpol_time)*t+0.49999f);
+
+ x->interpol_time = t;
+ if(i <= 0)
+ {
+ x->ticks = 1;
+ x->rcp_ticks = 1.0;
+ }
+ else
+ {
+ x->ticks = i;
+ x->rcp_ticks = 1.0 / (float)i;
+ }
+}
+
+static void sigfilter_ft3(t_sigfilter *x, t_floatarg b)
+{
+ if(b <= 0.0f)
+ b = 0.000001f;
+ if(x->hp)
+ b = 1.0 / b;
+ if(b != x->cur_b)
+ {
+ x->end_b = b;
+ x->counter_b = x->ticks;
+ x->delta_b = exp(log(b/x->cur_b)*x->rcp_ticks);
+ x->event_mask |= 4;/*set event_mask_bit 2 = 1*/
+ }
+}
+
+static void sigfilter_ft2(t_sigfilter *x, t_floatarg a)
+{
+ if(a <= 0.0f)
+ a = 0.000001f;
+ if(x->inv)
+ a = 1.0f / a;
+ if(x->hp)
+ a /= x->cur_b;
+ if(a != x->cur_a)
+ {
+ x->end_a = a;
+ x->counter_a = x->ticks;
+ x->delta_a = exp(log(a/x->cur_a)*x->rcp_ticks);
+ x->event_mask |= 2;/*set event_mask_bit 1 = 1*/
+ }
+}
+
+static void sigfilter_ft1(t_sigfilter *x, t_floatarg f)
+{
+ if(f <= 0.0f)
+ f = 0.000001f;
+ if(f != x->cur_f)
+ {
+ x->end_f = f;
+ x->counter_f = x->ticks;
+ x->delta_f = exp(log(f/x->cur_f)*x->rcp_ticks);
+ x->event_mask |= 1;/*set event_mask_bit 0 = 1*/
+ }
+}
+
+static void sigfilter_print(t_sigfilter *x)
+{
+// post("fb1 = %g, fb2 = %g, ff1 = %g, ff2 = %g, ff3 = %g", x->b1, x->b2, x->a0, x->a1, x->a2);
+ x->x_at[0].a_w.w_float = x->b1;
+ x->x_at[1].a_w.w_float = x->b2;
+ x->x_at[2].a_w.w_float = x->a0;
+ x->x_at[3].a_w.w_float = x->a1;
+ x->x_at[4].a_w.w_float = x->a2;
+ outlet_list(x->x_debug_outlet, &s_list, 5, x->x_at);
+}
+
+static void sigfilter_dsp(t_sigfilter *x, t_signal **sp)
+{
+ float si, co, f;
+ int i, n=(int)sp[0]->s_n;
+
+ x->sr = 3.14159265358979323846f / (float)(sp[0]->s_sr);
+ x->ticks_per_interpol_time = 0.001f * (float)(sp[0]->s_sr) / (float)n;
+ i = (int)((x->ticks_per_interpol_time)*(x->interpol_time)+0.49999f);
+ if(i <= 0)
+ {
+ x->ticks = 1;
+ x->rcp_ticks = 1.0f;
+ }
+ else
+ {
+ x->ticks = i;
+ x->rcp_ticks = 1.0f / (float)i;
+ }
+ f = x->cur_f * x->sr;
+ if(f < 1.0e-20f)
+ x->cur_l = 1.0e20f;
+ else if(f > 1.57079632f)
+ x->cur_l = 0.0f;
+ else
+ {
+ si = sin(f);
+ co = cos(f);
+ x->cur_l = co/si;
+ }
+ if(x->first_order)
+ {
+ if(n&7)
+ dsp_add(sigfilter_perform_1o, 4, sp[0]->s_vec, sp[1]->s_vec, x, n);
+ else
+ dsp_add(sigfilter_perf8_1o, 4, sp[0]->s_vec, sp[1]->s_vec, x, n);
+ }
+ else
+ {
+ if(n&7)
+ dsp_add(sigfilter_perform_2o, 4, sp[0]->s_vec, sp[1]->s_vec, x, n);
+ else
+ dsp_add(sigfilter_perf8_2o, 4, sp[0]->s_vec, sp[1]->s_vec, x, n);
+ }
+}
+
+static void *sigfilter_new(t_symbol *s, int argc, t_atom *argv)
+{
+ t_sigfilter *x = (t_sigfilter *)pd_new(sigfilter_class);
+ char *filt_name;
+ int i;
+ float si, co, f=0.0f, a=0.0f, b=0.0f, interpol=0.0f;
+ t_symbol *filt_typ=gensym("");
+
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft2"));
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft3"));
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft4"));
+ outlet_new(&x->x_obj, &s_signal);
+ x->x_debug_outlet = outlet_new(&x->x_obj, &s_list);
+ x->x_msi = 0.0f;
+
+ x->x_at[0].a_type = A_FLOAT;
+ x->x_at[1].a_type = A_FLOAT;
+ x->x_at[2].a_type = A_FLOAT;
+ x->x_at[3].a_type = A_FLOAT;
+ x->x_at[4].a_type = A_FLOAT;
+
+ x->event_mask = 1;
+ x->counter_f = 1;
+ x->counter_a = 0;
+ x->counter_b = 0;
+ x->delta_f = 0.0f;
+ x->delta_a = 0.0f;
+ x->delta_b = 0.0f;
+ x->interpol_time = 0.0f;
+ x->wn1 = 0.0f;
+ x->wn2 = 0.0f;
+ x->a0 = 0.0f;
+ x->a1 = 0.0f;
+ x->a2 = 0.0f;
+ x->b1 = 0.0f;
+ x->b2 = 0.0f;
+ x->sr = 3.14159265358979323846f / 44100.0f;
+ x->calc = sigfilter_snafu;
+ x->first_order = 0;
+ if((argc == 5)&&IS_A_FLOAT(argv,4)&&IS_A_FLOAT(argv,3)&&IS_A_FLOAT(argv,2)&&IS_A_FLOAT(argv,1)&&IS_A_SYMBOL(argv,0))
+ {
+ filt_typ = atom_getsymbolarg(0, argc, argv);
+ f = (float)atom_getfloatarg(1, argc, argv);
+ a = (float)atom_getfloatarg(2, argc, argv);
+ b = (float)atom_getfloatarg(3, argc, argv);
+ interpol = (float)atom_getfloatarg(4, argc, argv);
+ }
+ filt_name = (char *)filt_typ->s_name;
+ x->cur_f = f;
+ f *= x->sr;
+ if(f < 1.0e-20f)
+ x->cur_l = 1.0e20f;
+ else if(f > 1.57079632f)
+ x->cur_l = 0.0f;
+ else
+ {
+ si = sin(f);
+ co = cos(f);
+ x->cur_l = co/si;
+ }
+ if(a <= 0.0f)
+ a = 0.000001f;
+ if(b <= 0.0f)
+ b = 0.000001f;
+ x->cur_b = b;
+
+ if(interpol <= 0.0f)
+ interpol = 0.0f;
+ x->interpol_time = interpol;
+ x->ticks_per_interpol_time = 0.001f * 44100.0f / 64.0f;
+ i = (int)((x->ticks_per_interpol_time)*(x->interpol_time)+0.49999f);
+ if(i <= 0)
+ {
+ x->ticks = 1;
+ x->rcp_ticks = 1.0f;
+ }
+ else
+ {
+ x->ticks = i;
+ x->rcp_ticks = 1.0f / (float)i;
+ }
+
+ x->calc = sigfilter_snafu;
+
+ x->cur_a = 1.0f/a; /*a was Q*/
+ x->inv = 1;
+ x->hp = 0;
+
+ if(filt_name)
+ {
+ if(!strcmp(filt_name,"ap1"))
+ {
+ x->calc = sigfilter_ap1;
+ x->a1 = 1.0f;
+ x->first_order = 1;
+ }
+ else if(!strcmp(filt_name,"ap2"))
+ {
+ x->calc = sigfilter_ap2;
+ x->a2 = 1.0f;
+ }
+ else if(!strcmp(filt_name,"ap1c"))
+ {
+ x->calc = sigfilter_ap1;
+ x->a1 = 1.0f;
+ x->inv = 0;
+ x->cur_a = a; /*a was damping*/
+ x->first_order = 1;
+ }
+ else if(!strcmp(filt_name,"ap2c"))
+ {
+ x->calc = sigfilter_ap2;
+ x->a2 = 1.0f;
+ x->inv = 0;
+ x->cur_a = a; /*a was damping*/
+ }
+ else if(!strcmp(filt_name,"bpq2"))
+ {
+ x->calc = sigfilter_bp2;
+ }
+ else if(!strcmp(filt_name,"rbpq2"))
+ {
+ x->calc = sigfilter_rp2;
+ }
+ else if(!strcmp(filt_name,"bsq2"))
+ {
+ x->calc = sigfilter_bs2;
+ }
+ else if(!strcmp(filt_name,"bpw2"))
+ {
+ x->calc = sigfilter_bpw2;
+ x->inv = 0;
+ x->cur_a = a; /*a was bw*/
+ }
+ else if(!strcmp(filt_name,"rbpw2"))
+ {
+ x->calc = sigfilter_rpw2;
+ x->inv = 0;
+ x->cur_a = a; /*a was bw*/
+ }
+ else if(!strcmp(filt_name,"bsw2"))
+ {
+ x->calc = sigfilter_bsw2;
+ x->inv = 0;
+ x->cur_a = a; /*a was bw*/
+ }
+ else if(!strcmp(filt_name,"hp1"))
+ {
+ x->calc = sigfilter_hp1;
+ x->first_order = 1;
+ }
+ else if(!strcmp(filt_name,"hp2"))
+ {
+ x->calc = sigfilter_hp2;
+ }
+ else if(!strcmp(filt_name,"lp1"))
+ {
+ x->calc = sigfilter_lp1;
+ x->first_order = 1;
+ }
+ else if(!strcmp(filt_name,"lp2"))
+ {
+ x->calc = sigfilter_lp2;
+ }
+ else if(!strcmp(filt_name,"hp1c"))
+ {
+ x->calc = sigfilter_hp1;
+ x->cur_a = 1.0f / a;
+ x->first_order = 1;
+ }
+ else if(!strcmp(filt_name,"hp2c"))
+ {
+ x->calc = sigfilter_hp2;
+ x->inv = 0;
+ x->cur_a = a / b;
+ x->cur_b = 1.0f / b;
+ x->hp = 1;
+ }
+ else if(!strcmp(filt_name,"lp1c"))
+ {
+ x->calc = sigfilter_lp1;
+ x->inv = 0;
+ x->cur_a = a; /*a was damping*/
+ x->first_order = 1;
+ }
+ else if(!strcmp(filt_name,"lp2c"))
+ {
+ x->calc = sigfilter_lp2;
+ x->inv = 0;
+ x->cur_a = a; /*a was damping*/
+ }
+ else
+ {
+ post("filter~-Error: 1. initial-arguments: <sym> kind: \
+ lp1, lp2, hp1, hp2, \
+ lp1c, lp2c, hp1c, hp2c, \
+ ap1, ap2, ap1c, ap2c, \
+ bpq2, rbpq2, bsq2, \
+ bpw2, rbpw2, bsw2!");
+ }
+ x->end_f = x->cur_f;
+ x->end_a = x->cur_a;
+ x->end_b = x->cur_b;
+ }
+ return (x);
+}
+
+void sigfilter_setup(void)
+{
+ sigfilter_class = class_new(gensym("filter~"), (t_newmethod)sigfilter_new,
+ 0, sizeof(t_sigfilter), 0, A_GIMME, 0);
+ CLASS_MAINSIGNALIN(sigfilter_class, t_sigfilter, x_msi);
+ class_addmethod(sigfilter_class, (t_method)sigfilter_dsp, gensym("dsp"), 0);
+ class_addmethod(sigfilter_class, (t_method)sigfilter_ft1, gensym("ft1"), A_FLOAT, 0);
+ class_addmethod(sigfilter_class, (t_method)sigfilter_ft2, gensym("ft2"), A_FLOAT, 0);
+ class_addmethod(sigfilter_class, (t_method)sigfilter_ft3, gensym("ft3"), A_FLOAT, 0);
+ class_addmethod(sigfilter_class, (t_method)sigfilter_ft4, gensym("ft4"), A_FLOAT, 0);
+ class_addmethod(sigfilter_class, (t_method)sigfilter_print, gensym("print"), 0);
+ class_sethelpsymbol(sigfilter_class, gensym("iemhelp/help-filter~"));
+}
diff --git a/src/iemlib1/sighml_shelf.c b/src/iemlib1/sighml_shelf.c
new file mode 100644
index 0000000..ef209d1
--- /dev/null
+++ b/src/iemlib1/sighml_shelf.c
@@ -0,0 +1,558 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+
+/* ---------- hml_shelf~ - high-middle-low-shelving filter ----------- */
+
+typedef struct sighml_shelf
+{
+ t_object x_obj;
+ float wn1;
+ float wn2;
+ float a0;
+ float a1;
+ float a2;
+ float b1;
+ float b2;
+ float sr;
+ float cur_lf;
+ float cur_hf;
+ float cur_lg;
+ float cur_mg;
+ float cur_hg;
+ float delta_lf;
+ float delta_hf;
+ float delta_lg;
+ float delta_mg;
+ float delta_hg;
+ float end_lf;
+ float end_hf;
+ float end_lg;
+ float end_mg;
+ float end_hg;
+ float ticks_per_interpol_time;
+ float rcp_ticks;
+ float interpol_time;
+ int ticks;
+ int counter_lf;
+ int counter_hf;
+ int counter_lg;
+ int counter_mg;
+ int counter_hg;
+ int event_mask;
+ void *x_debug_outlet;
+ t_atom x_at[5];
+ float x_msi;
+} t_sighml_shelf;
+
+t_class *sighml_shelf_class;
+
+static void sighml_shelf_calc(t_sighml_shelf *x)
+{
+ float rf = x->cur_hf/x->cur_lf;
+ float mf = x->cur_hf*x->cur_lf;
+ float lg = x->cur_lg;
+ float rcplg = 1.0f/lg;
+ float mg = x->cur_mg;
+ float rcpmg = 1.0f/mg;
+ float hg = x->cur_hg;
+ float rcphg = 1.0f/hg;
+ float f = mf*x->sr;
+ float l = cos(f)/sin(f);
+ float k1 = rf*l;
+ float k2 = l/rf;
+ float k3 = l*l;
+ float k4 = k3*hg;
+ float k5 = k3*rcphg;
+ float k6 = rcplg + k5;
+ float k7 = rcpmg*k1 + k2*rcplg*rcphg*mg;
+ float k8 = lg + k4;
+ float k9 = mg*k1 + k2*lg*hg*rcpmg;
+ float k10 = 1.0f/(k6 + k7);
+
+ x->b2 = k10*(k7 - k6);
+ x->b1 = k10*2.0f*(k5 - rcplg);
+ x->a2 = k10*(k8 - k9);
+ x->a1 = k10*2.0f*(lg - k4);
+ x->a0 = k10*(k8 + k9);
+}
+/*
+high- & low- shelving-filter:
+L....sqrt(lowlevel);
+rL...rsqrt(lowlevel);
+M....sqrt(mediumlevel);
+rM...rsqrt(mediumlevel);
+H....sqrt(highlevel);
+rH...rsqrt(highlevel);
+V....sqrt(highfrequency/lowfrequency);
+P....j*2*pi*f/(2*pi*V*lowfrequency);
+
+Y/X = [M/(1/M)] * [(L/M + PV)/(M/L + PV)] * [(1 + HP/(VM))/(1 + MP/(VH))];
+Y/X = (L + P*(M*V + L*H/(V*M)) + P*P*H) / (rL + P*(rM*V + rL*rH/(V*rM)) + P*P*rH);
+
+hlshlv: lowlevel: ll; mediumlevel: lm; highlevel: hl; lowfrequency: fl; highfrequency: fh; samplerate: sr;
+ {
+ V = sqrt(fh/fl);
+ f = fl*V;
+ L = sqrt(ll);
+ rL = 1.0/L;
+ M = sqrt(lm);
+ rM = 1.0/M;
+ H = sqrt(lh);
+ rH = 1.0/H;
+
+ l = cot(f*3.14159265358979323846/sr);
+ k1 = V*l;
+ k2 = l/V;
+ l2 = l*l;
+ l3 = l2*H;
+ l4 = l2*rH;
+ m1 = k2*L*H*rM;
+ m2 = k2*rL*rH*M;
+ n1 = rL + l4;
+ n2 = rM*k1 + m2;
+ p1 = L + l3;
+ p2 = M*k1 + m1;
+ a012 = 1.0/(n1 + n2);
+
+ b2 = a012*(n2 - n1);
+ b1 = a012*2.0*(l4 - rL);
+ a2 = a012*(p1 - p2);
+ a1 = a012*2.0*(L - l3);
+ a0 = a012*(p1 + p2);
+
+
+
+
+
+
+ rf = sqrt(fh/fl);
+ mf = fl*rf;
+ L = sqrt(ll);
+ rL = 1.0/L;
+ M = sqrt(lm);
+ rM = 1.0/M;
+ H = sqrt(lh);
+ rH = 1.0/H;
+
+ l = cot(fm*3.14159265358979323846/sr);
+ k1 = V*l;
+ k2 = l/V;
+ k3 = l*l;
+ k4 = k3*H;
+ k5 = k3*rH;
+ k6 = rL + k5;
+ k7 = rM*k1 + k2*rL*rH*M;
+ k8 = L + k4;
+ k9 = M*k1 + k2*L*H*rM;
+ k10 = 1.0/(k6 + k7);
+
+ b2 = k10*(k7 - k6);
+ b1 = k10*2.0*(k5 - rL);
+ a2 = k10*(k8 - k9);
+ a1 = k10*2.0*(L - k4);
+ a0 = k10*(k8 + k9);
+*/
+
+static void sighml_shelf_dsp_tick(t_sighml_shelf *x)
+{
+ if(x->event_mask)
+ {
+ float discriminant;
+
+ if(x->counter_lg)
+ {
+ if(x->counter_lg <= 1)
+ {
+ x->cur_lg = x->end_lg;
+ x->counter_lg = 0;
+ x->event_mask &= 30;/*set event_mask_bit 0 = 0*/
+ }
+ else
+ {
+ x->counter_lg--;
+ x->cur_lg *= x->delta_lg;
+ }
+ }
+ if(x->counter_lf)
+ {
+ if(x->counter_lf <= 1)
+ {
+ x->cur_lf = x->end_lf;
+ x->counter_lf = 0;
+ x->event_mask &= 29;/*set event_mask_bit 1 = 0*/
+ }
+ else
+ {
+ x->counter_lf--;
+ x->cur_lf *= x->delta_lf;
+ }
+ }
+ if(x->counter_mg)
+ {
+ if(x->counter_mg <= 1)
+ {
+ x->cur_mg = x->end_mg;
+ x->counter_mg = 0;
+ x->event_mask &= 27;/*set event_mask_bit 2 = 0*/
+ }
+ else
+ {
+ x->counter_mg--;
+ x->cur_mg *= x->delta_mg;
+ }
+ }
+ if(x->counter_hf)
+ {
+ if(x->counter_hf <= 1)
+ {
+ x->cur_hf = x->end_hf;
+ x->counter_hf = 0;
+ x->event_mask &= 23;/*set event_mask_bit 3 = 0*/
+ }
+ else
+ {
+ x->counter_hf--;
+ x->cur_hf *= x->delta_hf;
+ }
+ }
+ if(x->counter_hg)
+ {
+ if(x->counter_hg <= 1)
+ {
+ x->cur_hg = x->end_hg;
+ x->counter_hg = 0;
+ x->event_mask &= 15;/*set event_mask_bit 4 = 0*/
+ }
+ else
+ {
+ x->counter_hg--;
+ x->cur_hg *= x->delta_hg;
+ }
+ }
+ sighml_shelf_calc(x);
+
+ /* stability check */
+
+ discriminant = x->b1 * x->b1 + 4.0f * x->b2;
+ if(x->b1 <= -1.9999996f)
+ x->b1 = -1.9999996f;
+ else if(x->b1 >= 1.9999996f)
+ x->b1 = 1.9999996f;
+
+ if(x->b2 <= -0.9999998f)
+ x->b2 = -0.9999998f;
+ else if(x->b2 >= 0.9999998f)
+ x->b2 = 0.9999998f;
+
+ if(discriminant >= 0.0f)
+ {
+ if(0.9999998f - x->b1 - x->b2 < 0.0f)
+ x->b2 = 0.9999998f - x->b1;
+ if(0.9999998f + x->b1 - x->b2 < 0.0f)
+ x->b2 = 0.9999998f + x->b1;
+ }
+ }
+}
+
+static t_int *sighml_shelf_perform(t_int *w)
+{
+ float *in = (float *)(w[1]);
+ float *out = (float *)(w[2]);
+ t_sighml_shelf *x = (t_sighml_shelf *)(w[3]);
+ int i, n = (t_int)(w[4]);
+ float wn0, wn1=x->wn1, wn2=x->wn2;
+ float a0=x->a0, a1=x->a1, a2=x->a2;
+ float b1=x->b1, b2=x->b2;
+
+ sighml_shelf_dsp_tick(x);
+ for(i=0; i<n; i++)
+ {
+ wn0 = *in++ + b1*wn1 + b2*wn2;
+ *out++ = a0*wn0 + a1*wn1 + a2*wn2;
+ wn2 = wn1;
+ wn1 = wn0;
+ }
+ /* NAN protect */
+ if(PD_BADFLOAT(wn2))
+ wn2 = 0.0f;
+ if(PD_BADFLOAT(wn1))
+ wn1 = 0.0f;
+
+ x->wn1 = wn1;
+ x->wn2 = wn2;
+ return(w+5);
+}
+/* yn0 = *out;
+ xn0 = *in;
+ *************
+ yn0 = a0*xn0 + a1*xn1 + a2*xn2 + b1*yn1 + b2*yn2;
+ yn2 = yn1;
+ yn1 = yn0;
+ xn2 = xn1;
+ xn1 = xn0;
+ *************************
+ y/x = (a0 + a1*z-1 + a2*z-2)/(1 - b1*z-1 - b2*z-2);*/
+
+static t_int *sighml_shelf_perf8(t_int *w)
+{
+ float *in = (float *)(w[1]);
+ float *out = (float *)(w[2]);
+ t_sighml_shelf *x = (t_sighml_shelf *)(w[3]);
+ int i, n = (t_int)(w[4]);
+ float wn[10];
+ float a0=x->a0, a1=x->a1, a2=x->a2;
+ float b1=x->b1, b2=x->b2;
+
+ sighml_shelf_dsp_tick(x);
+ wn[0] = x->wn2;
+ wn[1] = x->wn1;
+ for(i=0; i<n; i+=8, in+=8, out+=8)
+ {
+ wn[2] = in[0] + b1*wn[1] + b2*wn[0];
+ out[0] = a0*wn[2] + a1*wn[1] + a2*wn[0];
+ wn[3] = in[1] + b1*wn[2] + b2*wn[1];
+ out[1] = a0*wn[3] + a1*wn[2] + a2*wn[1];
+ wn[4] = in[2] + b1*wn[3] + b2*wn[2];
+ out[2] = a0*wn[4] + a1*wn[3] + a2*wn[2];
+ wn[5] = in[3] + b1*wn[4] + b2*wn[3];
+ out[3] = a0*wn[5] + a1*wn[4] + a2*wn[3];
+ wn[6] = in[4] + b1*wn[5] + b2*wn[4];
+ out[4] = a0*wn[6] + a1*wn[5] + a2*wn[4];
+ wn[7] = in[5] + b1*wn[6] + b2*wn[5];
+ out[5] = a0*wn[7] + a1*wn[6] + a2*wn[5];
+ wn[8] = in[6] + b1*wn[7] + b2*wn[6];
+ out[6] = a0*wn[8] + a1*wn[7] + a2*wn[6];
+ wn[9] = in[7] + b1*wn[8] + b2*wn[7];
+ out[7] = a0*wn[9] + a1*wn[8] + a2*wn[7];
+ wn[0] = wn[8];
+ wn[1] = wn[9];
+ }
+ /* NAN protect */
+ if(PD_BADFLOAT(wn[0]))
+ wn[0] = 0.0f;
+ if(PD_BADFLOAT(wn[1]))
+ wn[1] = 0.0f;
+
+ x->wn1 = wn[1];
+ x->wn2 = wn[0];
+ return(w+5);
+}
+
+static void sighml_shelf_ft6(t_sighml_shelf *x, t_floatarg t)
+{
+ int i = (int)((x->ticks_per_interpol_time)*t);
+
+ x->interpol_time = t;
+ if(i <= 0)
+ i = 1;
+ x->ticks = i;
+ x->rcp_ticks = 1.0f / (float)i;
+}
+
+static void sighml_shelf_ft5(t_sighml_shelf *x, t_floatarg hl)
+{
+ float hg = exp(0.057564627325 * hl);
+
+ if(hg != x->cur_hg)
+ {
+ x->end_hg = hg;
+ x->counter_hg = x->ticks;
+ x->delta_hg = exp(log(hg/x->cur_hg)*x->rcp_ticks);
+ x->event_mask |= 16;/*set event_mask_bit 4 = 1*/
+ }
+}
+
+static void sighml_shelf_ft4(t_sighml_shelf *x, t_floatarg hf)
+{
+ float sqhf;
+
+ if(hf <= 0.0f)
+ hf = 0.000001f;
+ sqhf = sqrt(hf);
+ if(sqhf != x->cur_hf)
+ {
+ x->end_hf = sqhf;
+ x->counter_hf = x->ticks;
+ x->delta_hf = exp(log(sqhf/x->cur_hf)*x->rcp_ticks);
+ x->event_mask |= 8;/*set event_mask_bit 3 = 1*/
+ }
+}
+
+static void sighml_shelf_ft3(t_sighml_shelf *x, t_floatarg ml)
+{
+ float mg = exp(0.057564627325 * ml);
+
+ if(mg != x->cur_mg)
+ {
+ x->end_mg = mg;
+ x->counter_mg = x->ticks;
+ x->delta_mg = exp(log(mg/x->cur_mg)*x->rcp_ticks);
+ x->event_mask |= 4;/*set event_mask_bit 2 = 1*/
+ }
+}
+
+static void sighml_shelf_ft2(t_sighml_shelf *x, t_floatarg lf)
+{
+ float sqlf;
+
+ if(lf <= 0.0f)
+ lf = 0.000001f;
+ sqlf = sqrt(lf);
+ if(sqlf != x->cur_lf)
+ {
+ x->end_lf = sqlf;
+ x->counter_lf = x->ticks;
+ x->delta_lf = exp(log(sqlf/x->cur_lf)*x->rcp_ticks);
+ x->event_mask |= 2;/*set event_mask_bit 1 = 1*/
+ }
+}
+
+static void sighml_shelf_ft1(t_sighml_shelf *x, t_floatarg ll)
+{
+ float lg = exp(0.057564627325 * ll);
+
+ if(lg != x->cur_lg)
+ {
+ x->end_lg = lg;
+ x->counter_lg = x->ticks;
+ x->delta_lg = exp(log(lg/x->cur_lg)*x->rcp_ticks);
+ x->event_mask |= 1;/*set event_mask_bit 0 = 1*/
+ }
+}
+
+static void sighml_shelf_print(t_sighml_shelf *x)
+{
+// post("fb1 = %g, fb2 = %g, ff1 = %g, ff2 = %g, ff3 = %g", x->b1, x->b2, x->a0, x->a1, x->a2);
+ x->x_at[0].a_w.w_float = x->b1;
+ x->x_at[1].a_w.w_float = x->b2;
+ x->x_at[2].a_w.w_float = x->a0;
+ x->x_at[3].a_w.w_float = x->a1;
+ x->x_at[4].a_w.w_float = x->a2;
+ outlet_list(x->x_debug_outlet, &s_list, 5, x->x_at);
+}
+
+static void sighml_shelf_dsp(t_sighml_shelf *x, t_signal **sp)
+{
+ int i, n=(int)sp[0]->s_n;
+
+ x->sr = 3.14159265358979323846f / (float)(sp[0]->s_sr);
+ x->ticks_per_interpol_time = 0.001f * (float)(sp[0]->s_sr) / (float)n;
+ i = (int)((x->ticks_per_interpol_time)*(x->interpol_time));
+ if(i <= 0)
+ i = 1;
+ x->ticks = i;
+ x->rcp_ticks = 1.0f / (float)i;
+ if(n&7)
+ dsp_add(sighml_shelf_perform, 4, sp[0]->s_vec, sp[1]->s_vec, x, n);
+ else
+ dsp_add(sighml_shelf_perf8, 4, sp[0]->s_vec, sp[1]->s_vec, x, n);
+}
+
+static void *sighml_shelf_new(t_symbol *s, int argc, t_atom *argv)
+{
+ t_sighml_shelf *x = (t_sighml_shelf *)pd_new(sighml_shelf_class);
+ int i;
+ float lf=200.0f, hf=2000.0f, ll=0.0f, ml=0.0f, hl=0.0f, interpol=0.0f;
+
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft2"));
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft3"));
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft4"));
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft5"));
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft6"));
+ outlet_new(&x->x_obj, &s_signal);
+ x->x_debug_outlet = outlet_new(&x->x_obj, &s_list);
+ x->x_msi = 0;
+
+ x->x_at[0].a_type = A_FLOAT;
+ x->x_at[1].a_type = A_FLOAT;
+ x->x_at[2].a_type = A_FLOAT;
+ x->x_at[3].a_type = A_FLOAT;
+ x->x_at[4].a_type = A_FLOAT;
+
+ x->event_mask = 2;
+ x->counter_lg = 0;
+ x->counter_lf = 1;
+ x->counter_mg = 0;
+ x->counter_hf = 0;
+ x->counter_hg = 0;
+ x->delta_lg = 0.0f;
+ x->delta_lf = 0.0f;
+ x->delta_mg = 0.0f;
+ x->delta_hf = 0.0f;
+ x->delta_hg = 0.0f;
+ x->interpol_time = 0.0f;
+ x->wn1 = 0.0f;
+ x->wn2 = 0.0f;
+ x->a0 = 0.0f;
+ x->a1 = 0.0f;
+ x->a2 = 0.0f;
+ x->b1 = 0.0f;
+ x->b2 = 0.0f;
+ x->sr = 3.14159265358979323846f / 44100.0f;
+ if((argc == 6)&&IS_A_FLOAT(argv,5)&&IS_A_FLOAT(argv,4)&&IS_A_FLOAT(argv,3)
+ &&IS_A_FLOAT(argv,2)&&IS_A_FLOAT(argv,1)&&IS_A_FLOAT(argv,0))
+ {
+ ll = (float)atom_getfloatarg(0, argc, argv);
+ lf = (float)atom_getfloatarg(1, argc, argv);
+ ml = (float)atom_getfloatarg(2, argc, argv);
+ hf = (float)atom_getfloatarg(3, argc, argv);
+ hl = (float)atom_getfloatarg(4, argc, argv);
+ interpol = (float)atom_getfloatarg(5, argc, argv);
+ }
+ x->cur_lg = exp(0.057564627325 * ll);
+ x->cur_mg = exp(0.057564627325 * ml);
+ x->cur_hg = exp(0.057564627325 * hl);
+ if(lf <= 0.0f)
+ lf = 0.000001f;
+ if(hf <= 0.0f)
+ hf = 0.000001f;
+ x->cur_lf = sqrt(lf);
+ x->cur_hf = sqrt(hf);
+ if(interpol < 0.0f)
+ interpol = 0.0f;
+ x->interpol_time = interpol;
+ x->ticks_per_interpol_time = 0.5f;
+ i = (int)((x->ticks_per_interpol_time)*(x->interpol_time));
+ if(i <= 0)
+ i = 1;
+ x->ticks = i;
+ x->rcp_ticks = 1.0f / (float)i;
+ x->end_lf = x->cur_lf;
+ x->end_hf = x->cur_hf;
+ x->end_lg = x->cur_lg;
+ x->end_mg = x->cur_mg;
+ x->end_hg = x->cur_hg;
+ return(x);
+}
+
+void sighml_shelf_setup(void)
+{
+ sighml_shelf_class = class_new(gensym("hml_shelf~"), (t_newmethod)sighml_shelf_new,
+ 0, sizeof(t_sighml_shelf), 0, A_GIMME, 0);
+ CLASS_MAINSIGNALIN(sighml_shelf_class, t_sighml_shelf, x_msi);
+ class_addmethod(sighml_shelf_class, (t_method)sighml_shelf_dsp, gensym("dsp"), 0);
+ class_addmethod(sighml_shelf_class, (t_method)sighml_shelf_ft1, gensym("ft1"), A_FLOAT, 0);
+ class_addmethod(sighml_shelf_class, (t_method)sighml_shelf_ft2, gensym("ft2"), A_FLOAT, 0);
+ class_addmethod(sighml_shelf_class, (t_method)sighml_shelf_ft3, gensym("ft3"), A_FLOAT, 0);
+ class_addmethod(sighml_shelf_class, (t_method)sighml_shelf_ft4, gensym("ft4"), A_FLOAT, 0);
+ class_addmethod(sighml_shelf_class, (t_method)sighml_shelf_ft5, gensym("ft5"), A_FLOAT, 0);
+ class_addmethod(sighml_shelf_class, (t_method)sighml_shelf_ft6, gensym("ft6"), A_FLOAT, 0);
+ class_addmethod(sighml_shelf_class, (t_method)sighml_shelf_print, gensym("print"), 0);
+ class_sethelpsymbol(sighml_shelf_class, gensym("iemhelp/help-hml_shelf~"));
+}
diff --git a/src/iemlib1/sigiem_cot4.c b/src/iemlib1/sigiem_cot4.c
new file mode 100644
index 0000000..b0990d9
--- /dev/null
+++ b/src/iemlib1/sigiem_cot4.c
@@ -0,0 +1,176 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+/* ------------------------ iem_cot4~ ----------------------------- */
+
+float *iem_cot4_table_cos=(float *)0L;
+float *iem_cot4_table_sin=(float *)0L;
+
+static t_class *sigiem_cot4_class;
+
+typedef struct _sigiem_cot4
+{
+ t_object x_obj;
+ float x_sr;
+ float x_msi;
+} t_sigiem_cot4;
+
+static t_int *sigiem_cot4_perform(t_int *w)
+{
+ t_float *in = (t_float *)(w[1]);
+ t_float *out = (t_float *)(w[2]);
+ t_float norm_freq;
+ t_float hout;
+ t_sigiem_cot4 *x = (t_sigiem_cot4 *)(w[3]);
+ t_float sr=x->x_sr;
+ int n = (int)(w[4]);
+ float *ctab = iem_cot4_table_cos, *stab = iem_cot4_table_sin;
+ float *caddr, *saddr, cf1, cf2, sf1, sf2, frac;
+ double dphase;
+ int normhipart;
+ int32 mytfi;
+ union tabfudge tf;
+
+ tf.tf_d = UNITBIT32;
+ normhipart = tf.tf_i[HIOFFSET];
+
+#if 0 /* this is the readable version of the code. */
+ while (n--)
+ {
+ norm_freq = *in * sr;
+ if(norm_freq < 0.0001f)
+ norm_freq = 0.0001f;
+ else if(norm_freq > 0.9f)
+ norm_freq = 0.9f;
+ dphase = (double)(norm_freq * (float)(COSTABSIZE)) + UNITBIT32;
+ tf.tf_d = dphase;
+ mytfi = tf.tf_i[HIOFFSET] & (COSTABSIZE-1);
+ saddr = stab + (mytfi);
+ caddr = ctab + (mytfi);
+ tf.tf_i[HIOFFSET] = normhipart;
+ frac = tf.tf_d - UNITBIT32;
+ sf1 = saddr[0];
+ sf2 = saddr[1];
+ cf1 = caddr[0];
+ cf2 = caddr[1];
+ in++;
+ *out++ = (cf1 + frac * (cf2 - cf1))/(sf1 + frac * (sf2 - sf1));
+ }
+#endif
+#if 1 /* this is the same, unwrapped by hand. prolog beg*/
+ n /= 4;
+ norm_freq = *in * sr;
+ if(norm_freq < 0.0001f)
+ norm_freq = 0.0001f;
+ else if(norm_freq > 0.9f)
+ norm_freq = 0.9f;
+ dphase = (double)(norm_freq * (float)(COSTABSIZE)) + UNITBIT32;
+ tf.tf_d = dphase;
+ mytfi = tf.tf_i[HIOFFSET] & (COSTABSIZE-1);
+ saddr = stab + (mytfi);
+ caddr = ctab + (mytfi);
+ tf.tf_i[HIOFFSET] = normhipart;
+ in += 4; /*prolog end*/
+ while (--n)
+ {
+ norm_freq = *in * sr;
+ if(norm_freq < 0.0001f)
+ norm_freq = 0.0001f;
+ else if(norm_freq > 0.9f)
+ norm_freq = 0.9f;
+ dphase = (double)(norm_freq * (float)(COSTABSIZE)) + UNITBIT32;
+ frac = tf.tf_d - UNITBIT32;
+ tf.tf_d = dphase;
+ sf1 = saddr[0];
+ sf2 = saddr[1];
+ cf1 = caddr[0];
+ cf2 = caddr[1];
+ mytfi = tf.tf_i[HIOFFSET] & (COSTABSIZE-1);
+ saddr = stab + (mytfi);
+ caddr = ctab + (mytfi);
+ hout = (cf1 + frac * (cf2 - cf1))/(sf1 + frac * (sf2 - sf1));
+ *out++ = hout;
+ *out++ = hout;
+ *out++ = hout;
+ *out++ = hout;
+ in += 4;
+ tf.tf_i[HIOFFSET] = normhipart;
+ }/*epilog beg*/
+ frac = tf.tf_d - UNITBIT32;
+ sf1 = saddr[0];
+ sf2 = saddr[1];
+ cf1 = caddr[0];
+ cf2 = caddr[1];
+ hout = (cf1 + frac * (cf2 - cf1))/(sf1 + frac * (sf2 - sf1));
+ *out++ = hout;
+ *out++ = hout;
+ *out++ = hout;
+ *out++ = hout;
+ /*epilog end*/
+#endif
+ return (w+5);
+}
+
+static void sigiem_cot4_dsp(t_sigiem_cot4 *x, t_signal **sp)
+{
+ x->x_sr = 2.0f / (float)sp[0]->s_sr;
+ dsp_add(sigiem_cot4_perform, 4, sp[0]->s_vec, sp[1]->s_vec, x, sp[0]->s_n);
+}
+
+static void sigiem_cot4_maketable(void)
+{
+ int i;
+ float *fp, phase, fff, phsinc = 0.5*3.141592653 / ((float)COSTABSIZE);
+ union tabfudge tf;
+
+ if(!iem_cot4_table_sin)
+ {
+ iem_cot4_table_sin = (float *)getbytes(sizeof(float) * (COSTABSIZE+1));
+ for(i=COSTABSIZE+1, fp=iem_cot4_table_sin, phase=0; i--; fp++, phase+=phsinc)
+ *fp = sin(phase);
+ }
+ if(!iem_cot4_table_cos)
+ {
+ iem_cot4_table_cos = (float *)getbytes(sizeof(float) * (COSTABSIZE+1));
+ for(i=COSTABSIZE+1, fp=iem_cot4_table_cos, phase=0; i--; fp++, phase+=phsinc)
+ *fp = cos(phase);
+ }
+ tf.tf_d = UNITBIT32 + 0.5;
+ if((unsigned)tf.tf_i[LOWOFFSET] != 0x80000000)
+ bug("iem_cot4~: unexpected machine alignment");
+}
+
+static void *sigiem_cot4_new(void)
+{
+ t_sigiem_cot4 *x = (t_sigiem_cot4 *)pd_new(sigiem_cot4_class);
+
+ outlet_new(&x->x_obj, gensym("signal"));
+ x->x_msi = 0;
+ return (x);
+}
+
+void sigiem_cot4_setup(void)
+{
+ sigiem_cot4_class = class_new(gensym("iem_cot4~"), (t_newmethod)sigiem_cot4_new, 0,
+ sizeof(t_sigiem_cot4), 0, 0);
+ class_addcreator((t_newmethod)sigiem_cot4_new, gensym("iem_cot~"), 0);
+ CLASS_MAINSIGNALIN(sigiem_cot4_class, t_sigiem_cot4, x_msi);
+ class_addmethod(sigiem_cot4_class, (t_method)sigiem_cot4_dsp, gensym("dsp"), 0);
+ sigiem_cot4_maketable();
+ class_sethelpsymbol(sigiem_cot4_class, gensym("iemhelp/help-iem_cot4~"));
+}
+
diff --git a/src/iemlib1/sigiem_delay.c b/src/iemlib1/sigiem_delay.c
new file mode 100644
index 0000000..56afbf3
--- /dev/null
+++ b/src/iemlib1/sigiem_delay.c
@@ -0,0 +1,208 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil (c) IEM KUG Graz Austria 2002 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+/* -------------------------- sigiem_delay~ ------------------------------ */
+static t_class *sigiem_delay_class;
+
+#define IEMDELAY_DEF_VEC_SIZE 64
+
+typedef struct _sigiem_delay
+{
+ t_object x_obj;
+ int x_mallocsize;
+ t_float x_max_delay_ms;
+ t_float x_current_delay_ms;
+ t_float *x_begmem1;
+ t_float *x_begmem2;
+ int x_writeindex;
+ int x_blocksize;
+ int x_delay_samples;
+ t_float x_sr;
+ t_float x_msi;
+} t_sigiem_delay;
+
+static void sigiem_delay_cur_del(t_sigiem_delay *x, t_floatarg f)
+{
+ if(f < 0.0f)
+ f = 0.0f;
+ else if(f > x->x_max_delay_ms)
+ f = x->x_max_delay_ms;
+ x->x_current_delay_ms = f;
+ x->x_delay_samples = (int)(0.001f*x->x_sr * f + 0.5f);
+}
+
+static t_int *sigiem_delay_perform(t_int *w)
+{
+ t_float *in = (t_float *)(w[1]);
+ t_float *out = (t_float *)(w[2]);
+ t_sigiem_delay *x = (t_sigiem_delay *)(w[3]);
+ int n=(int)(w[4]);
+ int writeindex = x->x_writeindex;
+ t_float *vec1, *vec2, *vec3;
+
+ vec1 = x->x_begmem1 + writeindex;
+ vec2 = x->x_begmem2 + writeindex;
+ vec3 = x->x_begmem2 + writeindex - x->x_delay_samples;
+ writeindex += n;
+ while(n--)
+ {
+ *vec1++ = *vec2++ = *in++;
+ *out++ = *vec3++;
+ }
+ if(writeindex >= x->x_mallocsize)
+ {
+ writeindex -= x->x_mallocsize;
+ }
+ x->x_writeindex = writeindex;
+ return(w+5);
+}
+
+static t_int *sigiem_delay_perf8(t_int *w)
+{
+ t_float *in = (t_float *)(w[1]);
+ t_float *out = (t_float *)(w[2]);
+ t_sigiem_delay *x = (t_sigiem_delay *)(w[3]);
+ int i, n=(int)(w[4]);
+ int writeindex = x->x_writeindex;
+ t_float *vec1, *vec2;
+
+ vec1 = x->x_begmem1 + writeindex;
+ vec2 = x->x_begmem2 + writeindex;
+ for(i=0; i<n; i+=8)
+ {
+ *vec1++ = *vec2++ = *in++;
+ *vec1++ = *vec2++ = *in++;
+ *vec1++ = *vec2++ = *in++;
+ *vec1++ = *vec2++ = *in++;
+ *vec1++ = *vec2++ = *in++;
+ *vec1++ = *vec2++ = *in++;
+ *vec1++ = *vec2++ = *in++;
+ *vec1++ = *vec2++ = *in++;
+ }
+
+ vec2 = x->x_begmem2 + writeindex - x->x_delay_samples;
+ for(i=0; i<n; i+=8)
+ {
+ *out++ = *vec2++;
+ *out++ = *vec2++;
+ *out++ = *vec2++;
+ *out++ = *vec2++;
+ *out++ = *vec2++;
+ *out++ = *vec2++;
+ *out++ = *vec2++;
+ *out++ = *vec2++;
+ }
+
+ writeindex += n;
+ if(writeindex >= x->x_mallocsize)
+ {
+ writeindex -= x->x_mallocsize;
+ }
+ x->x_writeindex = writeindex;
+ return(w+5);
+}
+
+static void sigiem_delay_dsp(t_sigiem_delay *x, t_signal **sp)
+{
+ int blocksize = sp[0]->s_n, i;
+
+ if(!x->x_blocksize)/*first time*/
+ {
+ int nsamps = x->x_max_delay_ms * (t_float)sp[0]->s_sr * 0.001f;
+
+ if(nsamps < 1)
+ nsamps = 1;
+ nsamps += ((- nsamps) & (blocksize - 1));
+ nsamps += blocksize;
+ x->x_mallocsize = nsamps;
+ x->x_begmem1 = (t_float *)getbytes(2 * x->x_mallocsize * sizeof(t_float));
+ x->x_begmem2 = x->x_begmem1 + x->x_mallocsize;
+ post("beginn = %x", (unsigned long)x->x_begmem1);
+ x->x_writeindex = blocksize;
+ x->x_sr = (t_float)sp[0]->s_sr;
+ x->x_blocksize = blocksize;
+ x->x_delay_samples = (int)(0.001f*x->x_sr * x->x_current_delay_ms + 0.5f);
+ }
+ else if((x->x_blocksize != blocksize) || ((t_float)sp[0]->s_sr != x->x_sr))
+ {
+ int nsamps = x->x_max_delay_ms * (t_float)sp[0]->s_sr * 0.001f;
+
+ if(nsamps < 1)
+ nsamps = 1;
+ nsamps += ((- nsamps) & (blocksize - 1));
+ nsamps += blocksize;
+
+ x->x_begmem1 = (t_float *)resizebytes(x->x_begmem1, 2*x->x_mallocsize*sizeof(t_float), 2*nsamps*sizeof(t_float));
+ x->x_mallocsize = nsamps;
+ x->x_begmem2 = x->x_begmem1 + x->x_mallocsize;
+ post("beginn = %x", (unsigned long)x->x_begmem1);
+ if(x->x_writeindex >= nsamps)
+ x->x_writeindex -= nsamps;
+ x->x_sr = (t_float)sp[0]->s_sr;
+ x->x_blocksize = blocksize;
+ x->x_delay_samples = (int)(0.001f*x->x_sr * x->x_current_delay_ms + 0.5f);
+ }
+
+ if(blocksize&7)
+ dsp_add(sigiem_delay_perform, 4, sp[0]->s_vec, sp[1]->s_vec, x, blocksize);
+ else
+ dsp_add(sigiem_delay_perf8, 4, sp[0]->s_vec, sp[1]->s_vec, x, blocksize);
+}
+
+static void *sigiem_delay_new(t_floatarg max_delay_ms, t_floatarg current_delay_ms)
+{
+ t_sigiem_delay *x = (t_sigiem_delay *)pd_new(sigiem_delay_class);
+ int nsamps;
+
+ if(max_delay_ms < 2.0f)
+ max_delay_ms = 2.0f;
+ x->x_max_delay_ms = max_delay_ms;
+ if(current_delay_ms < 0.0f)
+ current_delay_ms = 0.0f;
+ else if(current_delay_ms > max_delay_ms)
+ current_delay_ms = max_delay_ms;
+ x->x_current_delay_ms = current_delay_ms;
+ nsamps = max_delay_ms * sys_getsr() * 0.001f;
+ if(nsamps < 1)
+ nsamps = 1;
+ nsamps += ((- nsamps) & (IEMDELAY_DEF_VEC_SIZE - 1));
+ nsamps += IEMDELAY_DEF_VEC_SIZE;
+ x->x_mallocsize = nsamps;
+ x->x_begmem1 = (t_float *)getbytes(2 * x->x_mallocsize * sizeof(t_float));
+ x->x_begmem2 = x->x_begmem1 + x->x_mallocsize;
+ x->x_writeindex = IEMDELAY_DEF_VEC_SIZE;
+ x->x_blocksize = 0;
+ x->x_sr = 0.0f;
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
+ outlet_new(&x->x_obj, &s_signal);
+ x->x_msi = 0.0f;
+ return (x);
+}
+
+static void sigiem_delay_free(t_sigiem_delay *x)
+{
+ freebytes(x->x_begmem1, 2 * x->x_mallocsize * sizeof(t_float));
+}
+
+void sigiem_delay_setup(void)
+{
+ sigiem_delay_class = class_new(gensym("iem_delay~"), (t_newmethod)sigiem_delay_new, (t_method)sigiem_delay_free,
+ sizeof(t_sigiem_delay), 0, A_DEFFLOAT, A_DEFFLOAT, 0);
+ CLASS_MAINSIGNALIN(sigiem_delay_class, t_sigiem_delay, x_msi);
+ class_addmethod(sigiem_delay_class, (t_method)sigiem_delay_dsp, gensym("dsp"), 0);
+ class_addmethod(sigiem_delay_class, (t_method)sigiem_delay_cur_del, gensym("ft1"), A_FLOAT, 0);
+}
diff --git a/src/iemlib1/sigiem_pow4.c b/src/iemlib1/sigiem_pow4.c
new file mode 100644
index 0000000..ae5334c
--- /dev/null
+++ b/src/iemlib1/sigiem_pow4.c
@@ -0,0 +1,86 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+/* ------------------------ iem_pow4~ ----------------------------- */
+
+static t_class *sigiem_pow4_class;
+
+typedef struct _sigiem_pow4
+{
+ t_object x_obj;
+ float x_exp;
+ float x_msi;
+} t_sigiem_pow4;
+
+static void sigiem_pow4_ft1(t_sigiem_pow4 *x, t_floatarg f)
+{
+ x->x_exp = f;
+}
+
+static t_int *sigiem_pow4_perform(t_int *w)
+{
+ t_float *in = (t_float *)(w[1]);
+ t_float *out = (t_float *)(w[2]);
+ t_sigiem_pow4 *x = (t_sigiem_pow4 *)(w[3]);
+ t_float y=x->x_exp;
+ t_float f, g;
+ int n = (int)(w[4])/4;
+
+ while (n--)
+ {
+ f = *in;
+ if(f < 0.01f)
+ f = 0.01f;
+ else if(f > 1000.0f)
+ f = 1000.0f;
+ g = log(f);
+ f = exp(g*y);
+ *out++ = f;
+ *out++ = f;
+ *out++ = f;
+ *out++ = f;
+ in += 4;
+ }
+ return (w+5);
+}
+
+static void sigiem_pow4_dsp(t_sigiem_pow4 *x, t_signal **sp)
+{
+ dsp_add(sigiem_pow4_perform, 4, sp[0]->s_vec, sp[1]->s_vec, x, sp[0]->s_n);
+}
+
+static void *sigiem_pow4_new(t_floatarg f)
+{
+ t_sigiem_pow4 *x = (t_sigiem_pow4 *)pd_new(sigiem_pow4_class);
+
+ x->x_exp = f;
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
+ outlet_new(&x->x_obj, gensym("signal"));
+ x->x_msi = 0;
+ return (x);
+}
+
+void sigiem_pow4_setup(void)
+{
+ sigiem_pow4_class = class_new(gensym("iem_pow4~"), (t_newmethod)sigiem_pow4_new, 0,
+ sizeof(t_sigiem_pow4), 0, A_DEFFLOAT, 0);
+ class_addcreator((t_newmethod)sigiem_pow4_new, gensym("icot~"), 0);
+ CLASS_MAINSIGNALIN(sigiem_pow4_class, t_sigiem_pow4, x_msi);
+ class_addmethod(sigiem_pow4_class, (t_method)sigiem_pow4_dsp, gensym("dsp"), 0);
+ class_addmethod(sigiem_pow4_class, (t_method)sigiem_pow4_ft1, gensym("ft1"), A_FLOAT, 0);
+ class_sethelpsymbol(sigiem_pow4_class, gensym("iemhelp/help-iem_pow4~"));
+}
diff --git a/src/iemlib1/sigiem_sqrt4.c b/src/iemlib1/sigiem_sqrt4.c
new file mode 100644
index 0000000..49d9982
--- /dev/null
+++ b/src/iemlib1/sigiem_sqrt4.c
@@ -0,0 +1,117 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+#define IEMSQRT4TAB1SIZE 256
+#define IEMSQRT4TAB2SIZE 1024
+
+/* ------------------------ iem_sqrt4~ ----------------------------- */
+
+float *iem_sqrt4_exptab=(float *)0L;
+float *iem_sqrt4_mantissatab=(float *)0L;
+
+static t_class *sigiem_sqrt4_class;
+
+typedef struct _sigiem_sqrt4
+{
+ t_object x_obj;
+ float x_msi;
+} t_sigiem_sqrt4;
+
+static t_int *sigiem_sqrt4_perform(t_int *w)
+{
+ t_float *in = (t_float *)(w[1]);
+ t_float *out = (t_float *)(w[2]);
+ t_int n = (t_int)(w[3])/4;
+
+ while(n--)
+ {
+ float f = *in;
+ float g, h;
+ long l = *(long *)(in);
+
+ if(f < 0.0f)
+ {
+ *out++ = 0.0f;
+ *out++ = 0.0f;
+ *out++ = 0.0f;
+ *out++ = 0.0f;
+ }
+ else
+ {
+ g = iem_sqrt4_exptab[(l >> 23) & 0xff] * iem_sqrt4_mantissatab[(l >> 13) & 0x3ff];
+ h = f * (1.5f * g - 0.5f * g * g * g * f);
+ *out++ = h;
+ *out++ = h;
+ *out++ = h;
+ *out++ = h;
+ }
+ in += 4;
+ }
+ return(w+4);
+}
+
+static void sigiem_sqrt4_dsp(t_sigiem_sqrt4 *x, t_signal **sp)
+{
+ dsp_add(sigiem_sqrt4_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
+}
+
+static void sigiem_sqrt4_maketable(void)
+{
+ int i;
+ float f;
+ long l;
+
+ if(!iem_sqrt4_exptab)
+ {
+ iem_sqrt4_exptab = (float *)getbytes(sizeof(float) * IEMSQRT4TAB1SIZE);
+ for(i=0; i<IEMSQRT4TAB1SIZE; i++)
+ {
+ l = (i ? (i == IEMSQRT4TAB1SIZE-1 ? IEMSQRT4TAB1SIZE-2 : i) : 1)<< 23;
+ *(long *)(&f) = l;
+ iem_sqrt4_exptab[i] = 1.0f/sqrt(f);
+ }
+ }
+ if(!iem_sqrt4_mantissatab)
+ {
+ iem_sqrt4_mantissatab = (float *)getbytes(sizeof(float) * IEMSQRT4TAB2SIZE);
+ for(i=0; i<IEMSQRT4TAB2SIZE; i++)
+ {
+ f = 1.0f + (1.0f/(float)IEMSQRT4TAB2SIZE) * (float)i;
+ iem_sqrt4_mantissatab[i] = 1.0f/sqrt(f);
+ }
+ }
+}
+
+static void *sigiem_sqrt4_new(void)
+{
+ t_sigiem_sqrt4 *x = (t_sigiem_sqrt4 *)pd_new(sigiem_sqrt4_class);
+
+ outlet_new(&x->x_obj, gensym("signal"));
+ x->x_msi = 0;
+ return (x);
+}
+
+void sigiem_sqrt4_setup(void)
+{
+ sigiem_sqrt4_class = class_new(gensym("iem_sqrt4~"), (t_newmethod)sigiem_sqrt4_new, 0,
+ sizeof(t_sigiem_sqrt4), 0, 0);
+ CLASS_MAINSIGNALIN(sigiem_sqrt4_class, t_sigiem_sqrt4, x_msi);
+ class_addmethod(sigiem_sqrt4_class, (t_method)sigiem_sqrt4_dsp, gensym("dsp"), 0);
+ sigiem_sqrt4_maketable();
+ class_sethelpsymbol(sigiem_sqrt4_class, gensym("iemhelp/help-iem_sqrt4~"));
+}
+
diff --git a/src/iemlib1/siglp1_t.c b/src/iemlib1/siglp1_t.c
new file mode 100644
index 0000000..060d988
--- /dev/null
+++ b/src/iemlib1/siglp1_t.c
@@ -0,0 +1,219 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+
+/* -- lp1_t~ - slow dynamic lowpass-filter 1. order with tau input --- */
+
+typedef struct siglp1_t
+{
+ t_object x_obj;
+ float yn1;
+ float c0;
+ float c1;
+ float sr;
+ float cur_t;
+ float delta_t;
+ float end_t;
+ float ticks_per_interpol_time;
+ float rcp_ticks;
+ float interpol_time;
+ int ticks;
+ int counter_t;
+ float x_msi;
+} t_siglp1_t;
+
+t_class *siglp1_t_class;
+
+static void siglp1_t_dsp_tick(t_siglp1_t *x)
+{
+ if(x->counter_t)
+ {
+ if(x->counter_t <= 1)
+ {
+ x->cur_t = x->end_t;
+ x->counter_t = 0;
+ }
+ else
+ {
+ x->counter_t--;
+ x->cur_t += x->delta_t;
+ }
+ if(x->cur_t == 0.0f)
+ x->c1 = 0.0f;
+ else
+ x->c1 = exp((x->sr)/x->cur_t);
+ x->c0 = 1.0f - x->c1;
+ }
+}
+
+static t_int *siglp1_t_perform(t_int *w)
+{
+ float *in = (float *)(w[1]);
+ float *out = (float *)(w[2]);
+ t_siglp1_t *x = (t_siglp1_t *)(w[3]);
+ int i, n = (t_int)(w[4]);
+ float yn0, yn1=x->yn1;
+ float c0=x->c0, c1=x->c1;
+
+ siglp1_t_dsp_tick(x);
+ for(i=0; i<n; i++)
+ {
+ yn0 = (*in++)*c0 + yn1*c1;
+ *out++ = yn0;
+ yn1 = yn0;
+ }
+ /* NAN protect */
+ if(PD_BADFLOAT(yn1))
+ yn1 = 0.0f;
+ x->yn1 = yn1;
+ return(w+5);
+}
+
+static t_int *siglp1_t_perf8(t_int *w)
+{
+ float *in = (float *)(w[1]);
+ float *out = (float *)(w[2]);
+ t_siglp1_t *x = (t_siglp1_t *)(w[3]);
+ int i, n = (t_int)(w[4]);
+ float yn[9];
+ float c0=x->c0, c1=x->c1;
+
+ siglp1_t_dsp_tick(x);
+ yn[0] = x->yn1;
+ for(i=0; i<n; i+=8, in+=8, out+=8)
+ {
+ yn[1] = in[0]*c0 + yn[0]*c1;
+ out[0] = yn[1];
+ yn[2] = in[1]*c0 + yn[1]*c1;
+ out[1] = yn[2];
+ yn[3] = in[2]*c0 + yn[2]*c1;
+ out[2] = yn[3];
+ yn[4] = in[3]*c0 + yn[3]*c1;
+ out[3] = yn[4];
+ yn[5] = in[4]*c0 + yn[4]*c1;
+ out[4] = yn[5];
+ yn[6] = in[5]*c0 + yn[5]*c1;
+ out[5] = yn[6];
+ yn[7] = in[6]*c0 + yn[6]*c1;
+ out[6] = yn[7];
+ yn[8] = in[7]*c0 + yn[7]*c1;
+ out[7] = yn[8];
+ yn[0] = yn[8];
+ }
+ /* NAN protect */
+ if(PD_BADFLOAT(yn[0]))
+ yn[0] = 0.0f;
+
+ x->yn1 = yn[0];
+ return(w+5);
+}
+
+static void siglp1_t_ft2(t_siglp1_t *x, t_floatarg t)
+{
+ int i = (int)((x->ticks_per_interpol_time)*t);
+
+ x->interpol_time = t;
+ if(i <= 0)
+ i = 1;
+ x->ticks = i;
+ x->rcp_ticks = 1.0f / (float)i;
+}
+
+static void siglp1_t_ft1(t_siglp1_t *x, t_floatarg time_const)
+{
+ if(time_const < 0.0f)
+ time_const = 0.0f;
+ if(time_const != x->cur_t)
+ {
+ x->end_t = time_const;
+ x->counter_t = x->ticks;
+ x->delta_t = (time_const - x->cur_t) * x->rcp_ticks;
+ }
+}
+
+static void siglp1_t_dsp(t_siglp1_t *x, t_signal **sp)
+{
+ int i, n=(int)sp[0]->s_n;
+
+ x->sr = -1000.0f / (float)(sp[0]->s_sr);
+ x->ticks_per_interpol_time = 0.001f * (float)(sp[0]->s_sr) / (float)n;
+ i = (int)((x->ticks_per_interpol_time)*(x->interpol_time));
+ if(i <= 0)
+ i = 1;
+ x->ticks = i;
+ x->rcp_ticks = 1.0f / (float)i;
+ if(x->cur_t == 0.0f)
+ x->c1 = 0.0f;
+ else
+ x->c1 = exp((x->sr)/x->cur_t);
+ x->c0 = 1.0f - x->c1;
+ if(n&7)
+ dsp_add(siglp1_t_perform, 4, sp[0]->s_vec, sp[1]->s_vec, x, n);
+ else
+ dsp_add(siglp1_t_perf8, 4, sp[0]->s_vec, sp[1]->s_vec, x, n);
+}
+
+static void *siglp1_t_new(t_symbol *s, int argc, t_atom *argv)
+{
+ t_siglp1_t *x = (t_siglp1_t *)pd_new(siglp1_t_class);
+ int i;
+ float time_const=0.0f, interpol=0.0f;
+
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft2"));
+ outlet_new(&x->x_obj, &s_signal);
+ x->x_msi = 0;
+ x->counter_t = 1;
+ x->delta_t = 0.0f;
+ x->interpol_time = 0.0f;
+ x->yn1 = 0.0f;
+ x->sr = -1.0f / 44.1f;
+ if((argc >= 1)&&IS_A_FLOAT(argv,0))
+ time_const = (float)atom_getfloatarg(0, argc, argv);
+ if((argc >= 2)&&IS_A_FLOAT(argv,1))
+ interpol = (float)atom_getfloatarg(1, argc, argv);
+ if(time_const < 0.0f)
+ time_const = 0.0f;
+ x->cur_t = time_const;
+ if(time_const == 0.0f)
+ x->c1 = 0.0f;
+ else
+ x->c1 = exp((x->sr)/time_const);
+ x->c0 = 1.0f - x->c1;
+ if(interpol < 0.0f)
+ interpol = 0.0f;
+ x->interpol_time = interpol;
+ x->ticks_per_interpol_time = 0.5f;
+ i = (int)((x->ticks_per_interpol_time)*(x->interpol_time));
+ if(i <= 0)
+ i = 1;
+ x->ticks = i;
+ x->rcp_ticks = 1.0f / (float)i;
+ x->end_t = x->cur_t;
+ return (x);
+}
+
+void siglp1_t_setup(void)
+{
+ siglp1_t_class = class_new(gensym("lp1_t~"), (t_newmethod)siglp1_t_new,
+ 0, sizeof(t_siglp1_t), 0, A_GIMME, 0);
+ CLASS_MAINSIGNALIN(siglp1_t_class, t_siglp1_t, x_msi);
+ class_addmethod(siglp1_t_class, (t_method)siglp1_t_dsp, gensym("dsp"), 0);
+ class_addmethod(siglp1_t_class, (t_method)siglp1_t_ft1, gensym("ft1"), A_FLOAT, 0);
+ class_addmethod(siglp1_t_class, (t_method)siglp1_t_ft2, gensym("ft2"), A_FLOAT, 0);
+ class_sethelpsymbol(siglp1_t_class, gensym("iemhelp/help-lp1_t~"));
+}
diff --git a/src/iemlib1/sigmov_avrg_kern.c b/src/iemlib1/sigmov_avrg_kern.c
new file mode 100644
index 0000000..1c77a49
--- /dev/null
+++ b/src/iemlib1/sigmov_avrg_kern.c
@@ -0,0 +1,143 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+
+/* -- mov_avrg_kern~ - kernel for a moving-average-filter with IIR - */
+
+typedef struct sigmov_avrg_kern
+{
+ t_object x_obj;
+ double x_wn1;
+ double x_a0;
+ double x_sr;
+ double x_mstime;
+ int x_nsamps;
+ int x_counter;
+ float x_msi;
+} t_sigmov_avrg_kern;
+
+t_class *sigmov_avrg_kern_class;
+
+static t_int *sigmov_avrg_kern_perform(t_int *w)
+{
+ float *in_direct = (float *)(w[1]);
+ float *in_delayed = (float *)(w[2]);
+ float *out = (float *)(w[3]);
+ t_sigmov_avrg_kern *x = (t_sigmov_avrg_kern *)(w[4]);
+ int i, n = (int)(w[5]);
+ double wn0, wn1=x->x_wn1, a0=x->x_a0;
+
+ if(x->x_counter)
+ {
+ int counter = x->x_counter;
+
+ if(counter >= n)
+ {
+ x->x_counter = counter - n;
+ for(i=0; i<n; i++)
+ {
+ wn0 = wn1 + a0*(double)(*in_direct++);
+ *out++ = (float)wn0;
+ wn1 = wn0;
+ }
+ }
+ else
+ {
+ x->x_counter = 0;
+ for(i=0; i<counter; i++)
+ {
+ wn0 = wn1 + a0*(double)(*in_direct++);
+ *out++ = (float)wn0;
+ wn1 = wn0;
+ }
+ for(i=counter; i<n; i++)
+ {
+ wn0 = wn1 + a0*(double)(*in_direct++ - *in_delayed++);
+ *out++ = (float)wn0;
+ wn1 = wn0;
+ }
+ }
+ }
+ else
+ {
+ for(i=0; i<n; i++)
+ {
+ wn0 = wn1 + a0*(double)(*in_direct++ - *in_delayed++);
+ *out++ = (float)wn0;
+ wn1 = wn0;
+ }
+ }
+ x->x_wn1 = wn1;
+ return(w+6);
+}
+
+static void sigmov_avrg_kern_ft1(t_sigmov_avrg_kern *x, t_floatarg mstime)
+{
+ if(mstime < 0.04)
+ mstime = 0.04;
+ x->x_mstime = (double)mstime;
+ x->x_nsamps = (int)(x->x_sr * x->x_mstime);
+ x->x_counter = x->x_nsamps;
+ x->x_wn1 = 0.0;
+ x->x_a0 = 1.0/(double)(x->x_nsamps);
+}
+
+static void sigmov_avrg_kern_reset(t_sigmov_avrg_kern *x)
+{
+ x->x_counter = x->x_nsamps;
+ x->x_wn1 = 0.0;
+}
+
+static void sigmov_avrg_kern_dsp(t_sigmov_avrg_kern *x, t_signal **sp)
+{
+ x->x_sr = 0.001*(double)(sp[0]->s_sr);
+ x->x_nsamps = (int)(x->x_sr * x->x_mstime);
+ x->x_counter = x->x_nsamps;
+ x->x_wn1 = 0.0;
+ x->x_a0 = 1.0/(double)(x->x_nsamps);
+ dsp_add(sigmov_avrg_kern_perform, 5, sp[0]->s_vec, sp[1]->s_vec, sp[2]->s_vec, x, sp[0]->s_n);
+}
+
+static void *sigmov_avrg_kern_new(t_floatarg mstime)
+{
+ t_sigmov_avrg_kern *x = (t_sigmov_avrg_kern *)pd_new(sigmov_avrg_kern_class);
+
+ if(mstime < 0.04)
+ mstime = 0.04;
+ x->x_mstime = (double)mstime;
+ x->x_sr = 44.1;
+ x->x_nsamps = (int)(x->x_sr * x->x_mstime);
+ x->x_counter = x->x_nsamps;
+ x->x_wn1 = 0.0;
+ x->x_a0 = 1.0/(double)(x->x_nsamps);
+
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_signal, &s_signal);
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
+ outlet_new(&x->x_obj, &s_signal);
+ x->x_msi = 0;
+ return(x);
+}
+
+void sigmov_avrg_kern_setup(void)
+{
+ sigmov_avrg_kern_class = class_new(gensym("mov_avrg_kern~"), (t_newmethod)sigmov_avrg_kern_new,
+ 0, sizeof(t_sigmov_avrg_kern), 0, A_FLOAT, 0);
+ CLASS_MAINSIGNALIN(sigmov_avrg_kern_class, t_sigmov_avrg_kern, x_msi);
+ class_addmethod(sigmov_avrg_kern_class, (t_method)sigmov_avrg_kern_dsp, gensym("dsp"), 0);
+ class_addmethod(sigmov_avrg_kern_class, (t_method)sigmov_avrg_kern_ft1, gensym("ft1"), A_FLOAT, 0);
+ class_addmethod(sigmov_avrg_kern_class, (t_method)sigmov_avrg_kern_reset, gensym("reset"), 0);
+}
diff --git a/src/iemlib1/sigpara_bp2.c b/src/iemlib1/sigpara_bp2.c
new file mode 100644
index 0000000..871191e
--- /dev/null
+++ b/src/iemlib1/sigpara_bp2.c
@@ -0,0 +1,426 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+
+/* ---------- para_bp2~ - parametric bandpass 2. order ----------- */
+
+typedef struct sigpara_bp2
+{
+ t_object x_obj;
+ float wn1;
+ float wn2;
+ float a0;
+ float a1;
+ float a2;
+ float b1;
+ float b2;
+ float sr;
+ float cur_f;
+ float cur_l;
+ float cur_a;
+ float cur_g;
+ float delta_f;
+ float delta_a;
+ float delta_g;
+ float end_f;
+ float end_a;
+ float end_g;
+ float ticks_per_interpol_time;
+ float rcp_ticks;
+ float interpol_time;
+ int ticks;
+ int counter_f;
+ int counter_a;
+ int counter_g;
+ int event_mask;
+ void *x_debug_outlet;
+ t_atom x_at[5];
+ float x_msi;
+} t_sigpara_bp2;
+
+t_class *sigpara_bp2_class;
+
+static void sigpara_bp2_calc(t_sigpara_bp2 *x)
+{
+ float l, al, gal, l2, rcp;
+
+ l = x->cur_l;
+ l2 = l*l + 1.0;
+ al = l*x->cur_a;
+ gal = al*x->cur_g;
+ rcp = 1.0f/(al + l2);
+ x->a0 = rcp*(l2 + gal);
+ x->a1 = rcp*2.0f*(2.0f - l2);
+ x->a2 = rcp*(l2 - gal);
+ x->b1 = -x->a1;
+ x->b2 = rcp*(al - l2);
+}
+
+static void sigpara_bp2_dsp_tick(t_sigpara_bp2 *x)
+{
+ if(x->event_mask)
+ {
+ float discriminant;
+
+ if(x->counter_f)
+ {
+ float l, si, co;
+
+ if(x->counter_f <= 1)
+ {
+ x->cur_f = x->end_f;
+ x->counter_f = 0;
+ x->event_mask &= 6;/*set event_mask_bit 0 = 0*/
+ }
+ else
+ {
+ x->counter_f--;
+ x->cur_f *= x->delta_f;
+ }
+ l = x->cur_f * x->sr;
+ if(l < 1.0e-20f)
+ x->cur_l = 1.0e20f;
+ else if(l > 1.57079632f)
+ x->cur_l = 0.0f;
+ else
+ {
+ si = sin(l);
+ co = cos(l);
+ x->cur_l = co/si;
+ }
+ }
+ if(x->counter_a)
+ {
+ if(x->counter_a <= 1)
+ {
+ x->cur_a = x->end_a;
+ x->counter_a = 0;
+ x->event_mask &= 5;/*set event_mask_bit 1 = 0*/
+ }
+ else
+ {
+ x->counter_a--;
+ x->cur_a *= x->delta_a;
+ }
+ }
+ if(x->counter_g)
+ {
+ if(x->counter_g <= 1)
+ {
+ x->cur_g = x->end_g;
+ x->counter_g = 0;
+ x->event_mask &= 3;/*set event_mask_bit 2 = 0*/
+ }
+ else
+ {
+ x->counter_g--;
+ x->cur_g *= x->delta_g;
+ }
+ }
+
+ sigpara_bp2_calc(x);
+
+ /* stability check */
+
+ discriminant = x->b1 * x->b1 + 4.0f * x->b2;
+ if(x->b1 <= -1.9999996f)
+ x->b1 = -1.9999996f;
+ else if(x->b1 >= 1.9999996f)
+ x->b1 = 1.9999996f;
+
+ if(x->b2 <= -0.9999998f)
+ x->b2 = -0.9999998f;
+ else if(x->b2 >= 0.9999998f)
+ x->b2 = 0.9999998f;
+
+ if(discriminant >= 0.0f)
+ {
+ if(0.9999998f - x->b1 - x->b2 < 0.0f)
+ x->b2 = 0.9999998f - x->b1;
+ if(0.9999998f + x->b1 - x->b2 < 0.0f)
+ x->b2 = 0.9999998f + x->b1;
+ }
+ }
+}
+
+static t_int *sigpara_bp2_perform(t_int *w)
+{
+ float *in = (float *)(w[1]);
+ float *out = (float *)(w[2]);
+ t_sigpara_bp2 *x = (t_sigpara_bp2 *)(w[3]);
+ int i, n = (t_int)(w[4]);
+ float wn0, wn1=x->wn1, wn2=x->wn2;
+ float a0=x->a0, a1=x->a1, a2=x->a2;
+ float b1=x->b1, b2=x->b2;
+
+ sigpara_bp2_dsp_tick(x);
+ for(i=0; i<n; i++)
+ {
+ wn0 = *in++ + b1*wn1 + b2*wn2;
+ *out++ = a0*wn0 + a1*wn1 + a2*wn2;
+ wn2 = wn1;
+ wn1 = wn0;
+ }
+ /* NAN protect */
+ if(PD_BADFLOAT(wn2))
+ wn2 = 0.0f;
+ if(PD_BADFLOAT(wn1))
+ wn1 = 0.0f;
+
+ x->wn1 = wn1;
+ x->wn2 = wn2;
+ return(w+5);
+}
+/* yn0 = *out;
+ xn0 = *in;
+ *************
+ yn0 = a0*xn0 + a1*xn1 + a2*xn2 + b1*yn1 + b2*yn2;
+ yn2 = yn1;
+ yn1 = yn0;
+ xn2 = xn1;
+ xn1 = xn0;
+ *************************
+ y/x = (a0 + a1*z-1 + a2*z-2)/(1 - b1*z-1 - b2*z-2);*/
+
+static t_int *sigpara_bp2_perf8(t_int *w)
+{
+ float *in = (float *)(w[1]);
+ float *out = (float *)(w[2]);
+ t_sigpara_bp2 *x = (t_sigpara_bp2 *)(w[3]);
+ int i, n = (t_int)(w[4]);
+ float wn[10];
+ float a0=x->a0, a1=x->a1, a2=x->a2;
+ float b1=x->b1, b2=x->b2;
+
+ sigpara_bp2_dsp_tick(x);
+ wn[0] = x->wn2;
+ wn[1] = x->wn1;
+ for(i=0; i<n; i+=8, in+=8, out+=8)
+ {
+ wn[2] = in[0] + b1*wn[1] + b2*wn[0];
+ out[0] = a0*wn[2] + a1*wn[1] + a2*wn[0];
+ wn[3] = in[1] + b1*wn[2] + b2*wn[1];
+ out[1] = a0*wn[3] + a1*wn[2] + a2*wn[1];
+ wn[4] = in[2] + b1*wn[3] + b2*wn[2];
+ out[2] = a0*wn[4] + a1*wn[3] + a2*wn[2];
+ wn[5] = in[3] + b1*wn[4] + b2*wn[3];
+ out[3] = a0*wn[5] + a1*wn[4] + a2*wn[3];
+ wn[6] = in[4] + b1*wn[5] + b2*wn[4];
+ out[4] = a0*wn[6] + a1*wn[5] + a2*wn[4];
+ wn[7] = in[5] + b1*wn[6] + b2*wn[5];
+ out[5] = a0*wn[7] + a1*wn[6] + a2*wn[5];
+ wn[8] = in[6] + b1*wn[7] + b2*wn[6];
+ out[6] = a0*wn[8] + a1*wn[7] + a2*wn[6];
+ wn[9] = in[7] + b1*wn[8] + b2*wn[7];
+ out[7] = a0*wn[9] + a1*wn[8] + a2*wn[7];
+ wn[0] = wn[8];
+ wn[1] = wn[9];
+ }
+ /* NAN protect */
+ if(PD_BADFLOAT(wn[0]))
+ wn[0] = 0.0f;
+ if(PD_BADFLOAT(wn[1]))
+ wn[1] = 0.0f;
+
+ x->wn1 = wn[1];
+ x->wn2 = wn[0];
+ return(w+5);
+}
+
+static void sigpara_bp2_ft4(t_sigpara_bp2 *x, t_floatarg t)
+{
+ int i = (int)((x->ticks_per_interpol_time)*t);
+
+ x->interpol_time = t;
+ if(i <= 0)
+ i = 1;
+ x->ticks = i;
+ x->rcp_ticks = 1.0f / (float)i;
+}
+
+static void sigpara_bp2_ft3(t_sigpara_bp2 *x, t_floatarg l)
+{
+ float g = exp(0.11512925465 * l);
+
+ if(g != x->cur_g)
+ {
+ x->end_g = g;
+ x->counter_g = x->ticks;
+ x->delta_g = exp(log(g/x->cur_g)*x->rcp_ticks);
+ x->event_mask |= 4;/*set event_mask_bit 2 = 1*/
+ }
+}
+
+static void sigpara_bp2_ft2(t_sigpara_bp2 *x, t_floatarg q)
+{
+ float a;
+
+ if(q <= 0.0f)
+ q = 0.000001f;
+ a = 1.0f/q;
+ if(a != x->cur_a)
+ {
+ x->end_a = a;
+ x->counter_a = x->ticks;
+ x->delta_a = exp(log(a/x->cur_a)*x->rcp_ticks);
+ x->event_mask |= 2;/*set event_mask_bit 1 = 1*/
+ }
+}
+
+static void sigpara_bp2_ft1(t_sigpara_bp2 *x, t_floatarg f)
+{
+ if(f <= 0.0f)
+ f = 0.000001f;
+ if(f != x->cur_f)
+ {
+ x->end_f = f;
+ x->counter_f = x->ticks;
+ x->delta_f = exp(log(f/x->cur_f)*x->rcp_ticks);
+ x->event_mask |= 1;/*set event_mask_bit 0 = 1*/
+ }
+}
+
+static void sigpara_bp2_print(t_sigpara_bp2 *x)
+{
+// post("fb1 = %g, fb2 = %g, ff1 = %g, ff2 = %g, ff3 = %g", x->b1, x->b2, x->a0, x->a1, x->a2);
+ x->x_at[0].a_w.w_float = x->b1;
+ x->x_at[1].a_w.w_float = x->b2;
+ x->x_at[2].a_w.w_float = x->a0;
+ x->x_at[3].a_w.w_float = x->a1;
+ x->x_at[4].a_w.w_float = x->a2;
+ outlet_list(x->x_debug_outlet, &s_list, 5, x->x_at); post("fb1 = %g, fb2 = %g, ff1 = %g, ff2 = %g, ff3 = %g", x->b1, x->b2, x->a0, x->a1, x->a2);
+}
+
+static void sigpara_bp2_dsp(t_sigpara_bp2 *x, t_signal **sp)
+{
+ float si, co, f;
+ int i, n=(int)sp[0]->s_n;
+
+ x->sr = 3.14159265358979323846f / (float)(sp[0]->s_sr);
+ x->ticks_per_interpol_time = 0.001f * (float)(sp[0]->s_sr) / (float)n;
+ i = (int)((x->ticks_per_interpol_time)*(x->interpol_time));
+ if(i <= 0)
+ i = 1;
+ x->ticks = i;
+ x->rcp_ticks = 1.0f / (float)i;
+ f = x->cur_f * x->sr;
+ if(f < 1.0e-20f)
+ x->cur_l = 1.0e20f;
+ else if(f > 1.57079632f)
+ x->cur_l = 0.0f;
+ else
+ {
+ si = sin(f);
+ co = cos(f);
+ x->cur_l = co/si;
+ }
+ if(n&7)
+ dsp_add(sigpara_bp2_perform, 4, sp[0]->s_vec, sp[1]->s_vec, x, n);
+ else
+ dsp_add(sigpara_bp2_perf8, 4, sp[0]->s_vec, sp[1]->s_vec, x, n);
+}
+
+static void *sigpara_bp2_new(t_symbol *s, int argc, t_atom *argv)
+{
+ t_sigpara_bp2 *x = (t_sigpara_bp2 *)pd_new(sigpara_bp2_class);
+ int i;
+ float si, co, f=0.0, q=1.0, l=0.0, interpol=0.0;
+
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft2"));
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft3"));
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft4"));
+ outlet_new(&x->x_obj, &s_signal);
+ x->x_debug_outlet = outlet_new(&x->x_obj, &s_list);
+ x->x_msi = 0;
+
+ x->x_at[0].a_type = A_FLOAT;
+ x->x_at[1].a_type = A_FLOAT;
+ x->x_at[2].a_type = A_FLOAT;
+ x->x_at[3].a_type = A_FLOAT;
+ x->x_at[4].a_type = A_FLOAT;
+
+ x->event_mask = 1;
+ x->counter_f = 1;
+ x->counter_a = 0;
+ x->counter_g = 0;
+ x->delta_f = 0.0f;
+ x->delta_a = 0.0f;
+ x->delta_g = 0.0f;
+ x->interpol_time = 500.0f;
+ x->wn1 = 0.0;
+ x->wn2 = 0.0;
+ x->a0 = 0.0;
+ x->a1 = 0.0;
+ x->a2 = 0.0;
+ x->b1 = 0.0;
+ x->b2 = 0.0;
+ x->sr = 3.14159265358979323846f / 44100.0f;
+ x->cur_a = 1.0;
+ if((argc == 4)&&IS_A_FLOAT(argv,3)&&IS_A_FLOAT(argv,2)&&IS_A_FLOAT(argv,1)&&IS_A_FLOAT(argv,0))
+ {
+ f = (float)atom_getfloatarg(0, argc, argv);
+ q = (float)atom_getfloatarg(1, argc, argv);
+ l = (float)atom_getfloatarg(2, argc, argv);
+ interpol = (float)atom_getfloatarg(3, argc, argv);
+ }
+ if(f <= 0.0f)
+ f = 0.000001f;
+ x->cur_f = f;
+ f *= x->sr;
+ if(f < 1.0e-20f)
+ x->cur_l = 1.0e20f;
+ else if(f > 1.57079632f)
+ x->cur_l = 0.0f;
+ else
+ {
+ si = sin(f);
+ co = cos(f);
+ x->cur_l = co/si;
+ }
+ if(q <= 0.0f)
+ q = 0.000001f;
+ x->cur_a = 1.0f/q;
+ x->cur_g = exp(0.11512925465 * l);
+ if(interpol <= 0.0f)
+ interpol = 0.0f;
+ x->interpol_time = interpol;
+ x->ticks_per_interpol_time = 0.5f;
+ i = (int)((x->ticks_per_interpol_time)*(x->interpol_time));
+ if(i <= 0)
+ i = 1;
+ x->ticks = i;
+ x->rcp_ticks = 1.0f / (float)i;
+ x->end_f = x->cur_f;
+ x->end_a = x->cur_a;
+ x->end_g = x->cur_g;
+ return(x);
+}
+
+void sigpara_bp2_setup(void)
+{
+ sigpara_bp2_class = class_new(gensym("para_bp2~"), (t_newmethod)sigpara_bp2_new,
+ 0, sizeof(t_sigpara_bp2), 0, A_GIMME, 0);
+ CLASS_MAINSIGNALIN(sigpara_bp2_class, t_sigpara_bp2, x_msi);
+ class_addmethod(sigpara_bp2_class, (t_method)sigpara_bp2_dsp, gensym("dsp"), 0);
+ class_addmethod(sigpara_bp2_class, (t_method)sigpara_bp2_ft1, gensym("ft1"), A_FLOAT, 0);
+ class_addmethod(sigpara_bp2_class, (t_method)sigpara_bp2_ft2, gensym("ft2"), A_FLOAT, 0);
+ class_addmethod(sigpara_bp2_class, (t_method)sigpara_bp2_ft3, gensym("ft3"), A_FLOAT, 0);
+ class_addmethod(sigpara_bp2_class, (t_method)sigpara_bp2_ft4, gensym("ft4"), A_FLOAT, 0);
+ class_addmethod(sigpara_bp2_class, (t_method)sigpara_bp2_print, gensym("print"), 0);
+ class_sethelpsymbol(sigpara_bp2_class, gensym("iemhelp/help-para_bp2~"));
+}
diff --git a/src/iemlib1/sigpeakenv.c b/src/iemlib1/sigpeakenv.c
new file mode 100644
index 0000000..a16638e
--- /dev/null
+++ b/src/iemlib1/sigpeakenv.c
@@ -0,0 +1,102 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+/* ---------------- peakenv~ - simple peak-envelope-converter. ----------------- */
+
+typedef struct sigpeakenv
+{
+ t_object x_obj;
+ float x_sr;
+ float x_old_peak;
+ float x_c1;
+ float x_releasetime;
+ float x_msi;
+} t_sigpeakenv;
+
+t_class *sigpeakenv_class;
+
+static void sigpeakenv_reset(t_sigpeakenv *x)
+{
+ x->x_old_peak = 0.0f;
+}
+
+static void sigpeakenv_ft1(t_sigpeakenv *x, t_floatarg f)/* release-time in ms */
+{
+ if(f < 0.0f)
+ f = 0.0f;
+ x->x_releasetime = f;
+ x->x_c1 = exp(-1.0/(x->x_sr*0.001*x->x_releasetime));
+}
+
+static t_int *sigpeakenv_perform(t_int *w)
+{
+ float *in = (float *)(w[1]);
+ float *out = (float *)(w[2]);
+ t_sigpeakenv *x = (t_sigpeakenv *)(w[3]);
+ int n = (int)(w[4]);
+ float peak = x->x_old_peak;
+ float c1 = x->x_c1;
+ float absolute;
+ int i;
+
+ for(i=0; i<n; i++)
+ {
+ absolute = fabs(*in++);
+ peak *= c1;
+ if(absolute > peak)
+ peak = absolute;
+ *out++ = peak;
+ }
+ /* NAN protect */
+ if(PD_BADFLOAT(peak))
+ peak = 0.0f;
+ x->x_old_peak = peak;
+ return(w+5);
+}
+
+static void sigpeakenv_dsp(t_sigpeakenv *x, t_signal **sp)
+{
+ x->x_sr = (float)sp[0]->s_sr;
+ sigpeakenv_ft1(x, x->x_releasetime);
+ dsp_add(sigpeakenv_perform, 4, sp[0]->s_vec, sp[1]->s_vec, x, sp[0]->s_n);
+}
+
+static void *sigpeakenv_new(t_floatarg f)
+{
+ t_sigpeakenv *x = (t_sigpeakenv *)pd_new(sigpeakenv_class);
+
+ if(f <= 0.0f)
+ f = 0.0f;
+ x->x_sr = 44100.0f;
+ sigpeakenv_ft1(x, f);
+ x->x_old_peak = 0.0f;
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
+ outlet_new(&x->x_obj, &s_signal);
+ x->x_msi = 0;
+ return(x);
+}
+
+void sigpeakenv_setup(void)
+{
+ sigpeakenv_class = class_new(gensym("peakenv~"), (t_newmethod)sigpeakenv_new,
+ 0, sizeof(t_sigpeakenv), 0, A_DEFFLOAT, 0);
+ CLASS_MAINSIGNALIN(sigpeakenv_class, t_sigpeakenv, x_msi);
+ class_addmethod(sigpeakenv_class, (t_method)sigpeakenv_dsp, gensym("dsp"), 0);
+ class_addmethod(sigpeakenv_class, (t_method)sigpeakenv_ft1, gensym("ft1"), A_FLOAT, 0);
+ class_addmethod(sigpeakenv_class, (t_method)sigpeakenv_reset, gensym("reset"), 0);
+ class_sethelpsymbol(sigpeakenv_class, gensym("iemhelp/help-peakenv~"));
+}
diff --git a/src/iemlib1/sigprvu.c b/src/iemlib1/sigprvu.c
new file mode 100644
index 0000000..bb4b72a
--- /dev/null
+++ b/src/iemlib1/sigprvu.c
@@ -0,0 +1,282 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+/* ---------------- prvu~ - simple peak&rms-vu-meter. ----------------- */
+
+typedef struct sigprvu
+{
+ t_object x_obj;
+ t_atom x_at[3];
+ void *x_clock_metro;
+ int x_metro_time;
+ void *x_clock_hold;
+ int x_hold_time;
+ float x_cur_peak;
+ float x_old_peak;
+ float x_hold_peak;
+ int x_hold;
+ float x_sum_rms;
+ float x_old_rms;
+ float x_rcp;
+ float x_sr;
+ float x_threshold_over;
+ int x_overflow_counter;
+ float x_release_time;
+ float x_c1;
+ int x_started;
+ float x_msi;
+} t_sigprvu;
+
+t_class *sigprvu_class;
+static void sigprvu_tick_metro(t_sigprvu *x);
+static void sigprvu_tick_hold(t_sigprvu *x);
+
+static void sigprvu_reset(t_sigprvu *x)
+{
+ x->x_at[0].a_w.w_float = -99.9f;
+ x->x_at[1].a_w.w_float = -99.9f;
+ x->x_at[2].a_w.w_float = 0.0f;
+ outlet_list(x->x_obj.ob_outlet, &s_list, 3, x->x_at);
+ x->x_overflow_counter = 0;
+ x->x_cur_peak = 0.0f;
+ x->x_old_peak = 0.0f;
+ x->x_hold_peak = 0.0f;
+ x->x_sum_rms = 0.0f;
+ x->x_old_rms = 0.0f;
+ x->x_hold = 0;
+ clock_unset(x->x_clock_hold);
+ clock_delay(x->x_clock_metro, x->x_metro_time);
+}
+
+static void sigprvu_stop(t_sigprvu *x)
+{
+ clock_unset(x->x_clock_metro);
+ x->x_started = 0;
+}
+
+static void sigprvu_start(t_sigprvu *x)
+{
+ clock_delay(x->x_clock_metro, x->x_metro_time);
+ x->x_started = 1;
+}
+
+static void sigprvu_float(t_sigprvu *x, t_floatarg f)
+{
+ if(f == 0.0)
+ {
+ clock_unset(x->x_clock_metro);
+ x->x_started = 0;
+ }
+ else
+ {
+ clock_delay(x->x_clock_metro, x->x_metro_time);
+ x->x_started = 1;
+ }
+}
+
+static void sigprvu_t_release(t_sigprvu *x, t_floatarg release_time)
+{
+ if(release_time <= 20.0f)
+ release_time = 20.0f;
+ x->x_release_time = release_time;
+ x->x_c1 = exp(-2.0*(float)x->x_metro_time/x->x_release_time);
+}
+
+static void sigprvu_t_metro(t_sigprvu *x, t_floatarg metro_time)
+{
+ if(metro_time <= 20.0f)
+ metro_time = 20.0f;
+ x->x_metro_time = (int)metro_time;
+ x->x_c1 = exp(-2.0*(float)x->x_metro_time/x->x_release_time);
+ x->x_rcp = 1.0f/(x->x_sr*(float)x->x_metro_time);
+}
+
+static void sigprvu_t_hold(t_sigprvu *x, t_floatarg hold_time)
+{
+ if(hold_time <= 20.0f)
+ hold_time = 20.0f;
+ x->x_hold_time = (int)hold_time;
+}
+
+static void sigprvu_threshold(t_sigprvu *x, t_floatarg thresh)
+{
+ x->x_threshold_over = thresh;
+}
+
+static t_int *sigprvu_perform(t_int *w)
+{
+ float *in = (float *)(w[1]);
+ t_sigprvu *x = (t_sigprvu *)(w[2]);
+ int n = (int)(w[3]);
+ float peak = x->x_cur_peak, pow, sum=x->x_sum_rms;
+ int i;
+
+ if(x->x_started)
+ {
+ for(i=0; i<n; i++)
+ {
+ pow = in[i]*in[i];
+ if(pow > peak)
+ peak = pow;
+ sum += pow;
+ }
+ x->x_cur_peak = peak;
+ x->x_sum_rms = sum;
+ }
+ return(w+4);
+}
+
+static void sigprvu_dsp(t_sigprvu *x, t_signal **sp)
+{
+ x->x_sr = 0.001*(float)sp[0]->s_sr;
+ x->x_rcp = 1.0f/(x->x_sr*(float)x->x_metro_time);
+ dsp_add(sigprvu_perform, 3, sp[0]->s_vec, x, sp[0]->s_n);
+ clock_delay(x->x_clock_metro, x->x_metro_time);
+}
+
+static void sigprvu_tick_hold(t_sigprvu *x)
+{
+ x->x_hold = 0;
+ x->x_hold_peak = x->x_old_peak;
+}
+
+static void sigprvu_tick_metro(t_sigprvu *x)
+{
+ float dbr, dbp, cur_rms, c1=x->x_c1;
+
+ x->x_old_peak *= c1;
+ /* NAN protect */
+ if(PD_BADFLOAT(x->x_old_peak))
+ x->x_old_peak = 0.0f;
+
+ if(x->x_cur_peak > x->x_old_peak)
+ x->x_old_peak = x->x_cur_peak;
+ if(x->x_old_peak > x->x_hold_peak)
+ {
+ x->x_hold = 1;
+ x->x_hold_peak = x->x_old_peak;
+ clock_delay(x->x_clock_hold, x->x_hold_time);
+ }
+ if(!x->x_hold)
+ x->x_hold_peak = x->x_old_peak;
+ if(x->x_hold_peak <= 0.0000000001f)
+ dbp = -99.9f;
+ else if(x->x_hold_peak > 1000000.0f)
+ {
+ dbp = 60.0f;
+ x->x_hold_peak = 1000000.0f;
+ x->x_old_peak = 1000000.0f;
+ }
+ else
+ dbp = 4.3429448195f*log(x->x_hold_peak);
+ x->x_cur_peak = 0.0f;
+ if(dbp >= x->x_threshold_over)
+ x->x_overflow_counter++;
+ x->x_at[1].a_w.w_float = dbp;
+ x->x_at[2].a_w.w_float = (float)x->x_overflow_counter;
+
+ cur_rms = (1.0f - c1)*x->x_sum_rms*x->x_rcp + c1*x->x_old_rms;
+ /* NAN protect */
+ if(PD_BADFLOAT(cur_rms))
+ cur_rms = 0.0f;
+
+ if(cur_rms <= 0.0000000001f)
+ dbr = -99.9f;
+ else if(cur_rms > 1000000.0f)
+ {
+ dbr = 60.0f;
+ x->x_old_rms = 1000000.0f;
+ }
+ else
+ dbr = 4.3429448195f*log(cur_rms);
+ x->x_sum_rms = 0.0f;
+ x->x_old_rms = cur_rms;
+ x->x_at[0].a_w.w_float = dbr;
+ outlet_list(x->x_obj.ob_outlet, &s_list, 3, x->x_at);
+ clock_delay(x->x_clock_metro, x->x_metro_time);
+}
+
+static void sigprvu_ff(t_sigprvu *x)
+{
+ clock_free(x->x_clock_metro);
+ clock_free(x->x_clock_hold);
+}
+
+static void *sigprvu_new(t_floatarg metro_time, t_floatarg hold_time,
+ t_floatarg release_time, t_floatarg threshold)
+{
+ t_sigprvu *x;
+ float t;
+ int i;
+
+ x = (t_sigprvu *)pd_new(sigprvu_class);
+ if(metro_time <= 0.0f)
+ metro_time = 300.0f;
+ if(metro_time <= 20.0f)
+ metro_time = 20.0f;
+ if(release_time <= 0.0f)
+ release_time = 300.0f;
+ if(release_time <= 20.0f)
+ release_time = 20.0f;
+ if(hold_time <= 0.0f)
+ hold_time = 1000.0f;
+ if(hold_time <= 20.0f)
+ hold_time = 20.0f;
+ if(threshold == 0.0f)
+ threshold = -0.01f;
+ x->x_metro_time = (int)metro_time;
+ x->x_release_time = release_time;
+ x->x_hold_time = (int)hold_time;
+ x->x_threshold_over = threshold;
+ x->x_c1 = exp(-2.0*(float)x->x_metro_time/x->x_release_time);
+ x->x_cur_peak = 0.0f;
+ x->x_old_peak = 0.0f;
+ x->x_hold_peak = 0.0f;
+ x->x_hold = 0;
+ x->x_sum_rms = 0.0f;
+ x->x_old_rms = 0.0f;
+ x->x_sr = 44.1f;
+ x->x_rcp = 1.0f/(x->x_sr*(float)x->x_metro_time);
+ x->x_overflow_counter = 0;
+ x->x_clock_metro = clock_new(x, (t_method)sigprvu_tick_metro);
+ x->x_clock_hold = clock_new(x, (t_method)sigprvu_tick_hold);
+ x->x_started = 1;
+ outlet_new(&x->x_obj, &s_list);
+ x->x_at[0].a_type = A_FLOAT;
+ x->x_at[1].a_type = A_FLOAT;
+ x->x_at[2].a_type = A_FLOAT;
+ x->x_msi = 0.0f;
+ return(x);
+}
+
+void sigprvu_setup(void)
+{
+ sigprvu_class = class_new(gensym("prvu~"), (t_newmethod)sigprvu_new,
+ (t_method)sigprvu_ff, sizeof(t_sigprvu), 0,
+ A_DEFFLOAT, A_DEFFLOAT, A_DEFFLOAT, A_DEFFLOAT, 0);
+ CLASS_MAINSIGNALIN(sigprvu_class, t_sigprvu, x_msi);
+ class_addmethod(sigprvu_class, (t_method)sigprvu_dsp, gensym("dsp"), 0);
+ class_addfloat(sigprvu_class, sigprvu_float);
+ class_addmethod(sigprvu_class, (t_method)sigprvu_reset, gensym("reset"), 0);
+ class_addmethod(sigprvu_class, (t_method)sigprvu_start, gensym("start"), 0);
+ class_addmethod(sigprvu_class, (t_method)sigprvu_stop, gensym("stop"), 0);
+ class_addmethod(sigprvu_class, (t_method)sigprvu_t_release, gensym("t_release"), A_FLOAT, 0);
+ class_addmethod(sigprvu_class, (t_method)sigprvu_t_metro, gensym("t_metro"), A_FLOAT, 0);
+ class_addmethod(sigprvu_class, (t_method)sigprvu_t_hold, gensym("t_hold"), A_FLOAT, 0);
+ class_addmethod(sigprvu_class, (t_method)sigprvu_threshold, gensym("threshold"), A_FLOAT, 0);
+ class_sethelpsymbol(sigprvu_class, gensym("iemhelp/help-prvu~"));
+}
diff --git a/src/iemlib1/sigpvu.c b/src/iemlib1/sigpvu.c
new file mode 100644
index 0000000..5dd4ea4
--- /dev/null
+++ b/src/iemlib1/sigpvu.c
@@ -0,0 +1,206 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+/* ---------------- pvu~ - simple peak-vu-meter. ----------------- */
+
+typedef struct sigpvu
+{
+ t_object x_obj;
+ void *x_outlet_meter;
+ void *x_outlet_over;
+ void *x_clock;
+ float x_cur_peak;
+ float x_old_peak;
+ float x_threshold_over;
+ float x_c1;
+ int x_metro_time;
+ float x_release_time;
+ int x_overflow_counter;
+ int x_started;
+ float x_msi;
+} t_sigpvu;
+
+t_class *sigpvu_class;
+static void sigpvu_tick(t_sigpvu *x);
+
+static void sigpvu_reset(t_sigpvu *x)
+{
+ outlet_float(x->x_outlet_over, (t_float)0);
+ outlet_float(x->x_outlet_meter, -199.9);
+ x->x_overflow_counter = 0;
+ x->x_cur_peak = 0.0f;
+ x->x_old_peak = 0.0f;
+ clock_delay(x->x_clock, x->x_metro_time);
+}
+
+static void sigpvu_stop(t_sigpvu *x)
+{
+ clock_unset(x->x_clock);
+ x->x_started = 0;
+}
+
+static void sigpvu_start(t_sigpvu *x)
+{
+ clock_delay(x->x_clock, x->x_metro_time);
+ x->x_started = 1;
+}
+
+static void sigpvu_float(t_sigpvu *x, t_floatarg f)
+{
+ if(f == 0.0)
+ {
+ clock_unset(x->x_clock);
+ x->x_started = 0;
+ }
+ else
+ {
+ clock_delay(x->x_clock, x->x_metro_time);
+ x->x_started = 1;
+ }
+}
+
+static void sigpvu_t_release(t_sigpvu *x, t_floatarg release_time)
+{
+ if(release_time <= 20.0f)
+ release_time = 20.0f;
+ x->x_release_time = release_time;
+ x->x_c1 = exp(-(float)x->x_metro_time/(float)release_time);
+}
+
+static void sigpvu_t_metro(t_sigpvu *x, t_floatarg metro_time)
+{
+ if(metro_time <= 20.0f)
+ metro_time = 20.0f;
+ x->x_metro_time = (int)metro_time;
+ x->x_c1 = exp(-(float)metro_time/(float)x->x_release_time);
+}
+
+static void sigpvu_threshold(t_sigpvu *x, t_floatarg thresh)
+{
+ x->x_threshold_over = thresh;
+}
+
+static t_int *sigpvu_perform(t_int *w)
+{
+ float *in = (float *)(w[1]);
+ t_sigpvu *x = (t_sigpvu *)(w[2]);
+ int n = (int)(w[3]);
+ float peak = x->x_cur_peak;
+ float absolute;
+ int i;
+
+ if(x->x_started)
+ {
+ for(i=0; i<n; i++)
+ {
+ absolute = fabs(*in++);
+ if(absolute > peak)
+ peak = absolute;
+ }
+ x->x_cur_peak = peak;
+ }
+ return(w+4);
+}
+
+static void sigpvu_dsp(t_sigpvu *x, t_signal **sp)
+{
+ dsp_add(sigpvu_perform, 3, sp[0]->s_vec, x, sp[0]->s_n);
+ clock_delay(x->x_clock, x->x_metro_time);
+}
+
+static void sigpvu_tick(t_sigpvu *x)
+{
+ float db;
+ int i;
+
+ x->x_old_peak *= x->x_c1;
+ /* NAN protect */
+ if(PD_BADFLOAT(x->x_old_peak))
+ x->x_old_peak = 0.0f;
+
+ if(x->x_cur_peak > x->x_old_peak)
+ x->x_old_peak = x->x_cur_peak;
+ if(x->x_old_peak <= 0.0000000001f)
+ db = -199.9f;
+ else if(x->x_old_peak > 1000000.0f)
+ {
+ db = 120.0f;
+ x->x_old_peak = 1000000.0f;
+ }
+ else
+ db = 8.6858896381f*log(x->x_old_peak);
+ if(db >= x->x_threshold_over)
+ {
+ x->x_overflow_counter++;
+ outlet_float(x->x_outlet_over, (t_float)x->x_overflow_counter);
+ }
+ outlet_float(x->x_outlet_meter, db);
+ x->x_cur_peak = 0.0f;
+ clock_delay(x->x_clock, x->x_metro_time);
+}
+
+static void *sigpvu_new(t_floatarg metro_time, t_floatarg release_time, t_floatarg threshold)
+{
+ t_sigpvu *x;
+ float t;
+
+ x = (t_sigpvu *)pd_new(sigpvu_class);
+ if(metro_time <= 0.0f)
+ metro_time = 300.0f;
+ if(metro_time <= 20.0f)
+ metro_time = 20.0f;
+ if(release_time <= 0.0f)
+ release_time = 300.0f;
+ if(release_time <= 20.0f)
+ release_time = 20.0f;
+ if(threshold == 0.0f)
+ threshold = -0.01f;
+ x->x_threshold_over = threshold;
+ x->x_overflow_counter = 0;
+ x->x_metro_time = (int)metro_time;
+ x->x_release_time = release_time;
+ x->x_c1 = exp(-(float)metro_time/(float)release_time);
+ x->x_cur_peak = 0.0f;
+ x->x_old_peak = 0.0f;
+ x->x_clock = clock_new(x, (t_method)sigpvu_tick);
+ x->x_outlet_meter = outlet_new(&x->x_obj, &s_float);/* left */
+ x->x_outlet_over = outlet_new(&x->x_obj, &s_float); /* right */
+ x->x_started = 1;
+ x->x_msi = 0;
+ return(x);
+}
+
+static void sigpvu_ff(t_sigpvu *x)
+{
+ clock_free(x->x_clock);
+}
+
+void sigpvu_setup(void )
+{
+ sigpvu_class = class_new(gensym("pvu~"), (t_newmethod)sigpvu_new,
+ (t_method)sigpvu_ff, sizeof(t_sigpvu), 0, A_DEFFLOAT, A_DEFFLOAT, A_DEFFLOAT, 0);
+ CLASS_MAINSIGNALIN(sigpvu_class, t_sigpvu, x_msi);
+ class_addmethod(sigpvu_class, (t_method)sigpvu_dsp, gensym("dsp"), 0);
+ class_addfloat(sigpvu_class, sigpvu_float);
+ class_addmethod(sigpvu_class, (t_method)sigpvu_reset, gensym("reset"), 0);
+ class_addmethod(sigpvu_class, (t_method)sigpvu_start, gensym("start"), 0);
+ class_addmethod(sigpvu_class, (t_method)sigpvu_stop, gensym("stop"), 0);
+ class_addmethod(sigpvu_class, (t_method)sigpvu_t_release, gensym("t_release"), A_FLOAT, 0);
+ class_addmethod(sigpvu_class, (t_method)sigpvu_t_metro, gensym("t_metro"), A_FLOAT, 0);
+ class_addmethod(sigpvu_class, (t_method)sigpvu_threshold, gensym("threshold"), A_FLOAT, 0);
+ class_sethelpsymbol(sigpvu_class, gensym("iemhelp/help-pvu~"));
+}
diff --git a/src/iemlib1/sigrvu.c b/src/iemlib1/sigrvu.c
new file mode 100644
index 0000000..70b9cd7
--- /dev/null
+++ b/src/iemlib1/sigrvu.c
@@ -0,0 +1,187 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+/* ---------------- rvu~ - simple peak&rms-vu-meter. ----------------- */
+
+typedef struct sigrvu
+{
+ t_object x_obj;
+ void *x_clock_metro;
+ int x_metro_time;
+ float x_sum_rms;
+ float x_old_rms;
+ float x_rcp;
+ float x_sr;
+ float x_release_time;
+ float x_c1;
+ int x_started;
+ float x_msi;
+} t_sigrvu;
+
+t_class *sigrvu_class;
+static void sigrvu_tick_metro(t_sigrvu *x);
+
+static void sigrvu_reset(t_sigrvu *x)
+{
+ outlet_float(x->x_obj.ob_outlet, -99.9f);
+ x->x_sum_rms = 0.0f;
+ x->x_old_rms = 0.0f;
+ clock_delay(x->x_clock_metro, x->x_metro_time);
+}
+
+static void sigrvu_stop(t_sigrvu *x)
+{
+ clock_unset(x->x_clock_metro);
+ x->x_started = 0;
+}
+
+static void sigrvu_start(t_sigrvu *x)
+{
+ clock_delay(x->x_clock_metro, x->x_metro_time);
+ x->x_started = 1;
+}
+
+static void sigrvu_float(t_sigrvu *x, t_floatarg f)
+{
+ if(f == 0.0)
+ {
+ clock_unset(x->x_clock_metro);
+ x->x_started = 0;
+ }
+ else
+ {
+ clock_delay(x->x_clock_metro, x->x_metro_time);
+ x->x_started = 1;
+ }
+}
+
+static void sigrvu_t_release(t_sigrvu *x, t_floatarg release_time)
+{
+ if(release_time <= 20.0f)
+ release_time = 20.0f;
+ x->x_release_time = release_time;
+ x->x_c1 = exp(-2.0*(float)x->x_metro_time/x->x_release_time);
+}
+
+static void sigrvu_t_metro(t_sigrvu *x, t_floatarg metro_time)
+{
+ if(metro_time <= 20.0f)
+ metro_time = 20.0f;
+ x->x_metro_time = (int)metro_time;
+ x->x_c1 = exp(-2.0*(float)x->x_metro_time/x->x_release_time);
+ x->x_rcp = 1.0f/(x->x_sr*(float)x->x_metro_time);
+}
+
+static t_int *sigrvu_perform(t_int *w)
+{
+ float *in = (float *)(w[1]);
+ t_sigrvu *x = (t_sigrvu *)(w[2]);
+ int n = (int)(w[3]);
+ float pow, sum=x->x_sum_rms;
+ int i;
+
+ if(x->x_started)
+ {
+ for(i=0; i<n; i++)
+ {
+ sum += in[i]*in[i];
+ }
+ x->x_sum_rms = sum;
+ }
+ return(w+4);
+}
+
+static void sigrvu_dsp(t_sigrvu *x, t_signal **sp)
+{
+ x->x_sr = 0.001*(float)sp[0]->s_sr;
+ x->x_rcp = 1.0f/(x->x_sr*(float)x->x_metro_time);
+ dsp_add(sigrvu_perform, 3, sp[0]->s_vec, x, sp[0]->s_n);
+ clock_delay(x->x_clock_metro, x->x_metro_time);
+}
+
+static void sigrvu_tick_metro(t_sigrvu *x)
+{
+ float dbr, cur_rms, c1=x->x_c1;
+
+ cur_rms = (1.0f - c1)*x->x_sum_rms*x->x_rcp + c1*x->x_old_rms;
+ /* NAN protect */
+ if(PD_BADFLOAT(cur_rms))
+ cur_rms = 0.0f;
+
+ if(cur_rms <= 0.0000000001f)
+ dbr = -99.9f;
+ else if(cur_rms > 1000000.0f)
+ {
+ dbr = 60.0f;
+ x->x_old_rms = 1000000.0f;
+ }
+ else
+ dbr = 4.3429448195f*log(cur_rms);
+ x->x_sum_rms = 0.0f;
+ x->x_old_rms = cur_rms;
+ outlet_float(x->x_obj.ob_outlet, dbr);
+ clock_delay(x->x_clock_metro, x->x_metro_time);
+}
+
+static void sigrvu_ff(t_sigrvu *x)
+{
+ clock_free(x->x_clock_metro);
+}
+
+static void *sigrvu_new(t_floatarg metro_time, t_floatarg release_time)
+{
+ t_sigrvu *x=(t_sigrvu *)pd_new(sigrvu_class);
+ float t;
+ int i;
+
+ if(metro_time <= 0.0f)
+ metro_time = 300.0f;
+ if(metro_time <= 20.0f)
+ metro_time = 20.0f;
+ if(release_time <= 0.0f)
+ release_time = 300.0f;
+ if(release_time <= 20.0f)
+ release_time = 20.0f;
+ x->x_metro_time = (int)metro_time;
+ x->x_release_time = release_time;
+ x->x_c1 = exp(-2.0*(float)x->x_metro_time/x->x_release_time);
+ x->x_sum_rms = 0.0f;
+ x->x_old_rms = 0.0f;
+ x->x_sr = 44.1f;
+ x->x_rcp = 1.0f/(x->x_sr*(float)x->x_metro_time);
+ x->x_clock_metro = clock_new(x, (t_method)sigrvu_tick_metro);
+ x->x_started = 1;
+ outlet_new(&x->x_obj, &s_float);
+ x->x_msi = 0.0f;
+ return(x);
+}
+
+void sigrvu_setup(void)
+{
+ sigrvu_class = class_new(gensym("rvu~"), (t_newmethod)sigrvu_new,
+ (t_method)sigrvu_ff, sizeof(t_sigrvu), 0,
+ A_DEFFLOAT, A_DEFFLOAT, 0);
+ CLASS_MAINSIGNALIN(sigrvu_class, t_sigrvu, x_msi);
+ class_addmethod(sigrvu_class, (t_method)sigrvu_dsp, gensym("dsp"), 0);
+ class_addfloat(sigrvu_class, sigrvu_float);
+ class_addmethod(sigrvu_class, (t_method)sigrvu_reset, gensym("reset"), 0);
+ class_addmethod(sigrvu_class, (t_method)sigrvu_start, gensym("start"), 0);
+ class_addmethod(sigrvu_class, (t_method)sigrvu_stop, gensym("stop"), 0);
+ class_addmethod(sigrvu_class, (t_method)sigrvu_t_release, gensym("t_release"), A_FLOAT, 0);
+ class_addmethod(sigrvu_class, (t_method)sigrvu_t_metro, gensym("t_metro"), A_FLOAT, 0);
+ class_sethelpsymbol(sigrvu_class, gensym("iemhelp/help-rvu~"));
+}
diff --git a/src/iemlib1/sigsin_phase.c b/src/iemlib1/sigsin_phase.c
new file mode 100644
index 0000000..0594962
--- /dev/null
+++ b/src/iemlib1/sigsin_phase.c
@@ -0,0 +1,129 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+
+/* --- sin_phase~ - output the phase-difference between 2 sinewaves in samples (sig) ---- */
+
+typedef struct sigsin_phase
+{
+ t_object x_obj;
+ float x_prev1;
+ float x_prev2;
+ float x_cur_out;
+ int x_counter1;
+ int x_counter2;
+ int x_state1;
+ int x_state2;
+ float x_msi;
+} t_sigsin_phase;
+
+t_class *sigsin_phase_class;
+
+static t_int *sigsin_phase_perform(t_int *w)
+{
+ float *in1 = (float *)(w[1]);
+ float *in2 = (float *)(w[2]);
+ float *out = (float *)(w[3]);
+ t_sigsin_phase *x = (t_sigsin_phase *)(w[4]);
+ int i, n = (t_int)(w[5]);
+ float prev1=x->x_prev1;
+ float prev2=x->x_prev2;
+ float cur_out=x->x_cur_out;
+ int counter1=x->x_counter1;
+ int counter2=x->x_counter2;
+ int state1=x->x_state1;
+ int state2=x->x_state2;
+
+ for(i=0; i<n; i++)
+ {
+ if((in1[i] >= 0.0f) && (prev1 < 0.0f))
+ {
+ state1 = 1;
+ counter1 = 0;
+ }
+ else if((in1[i] < 0.0f) && (prev1 >= 0.0f))
+ {
+ state2 = 1;
+ counter2 = 0;
+ }
+
+ if((in2[i] >= 0.0f) && (prev2 < 0.0f))
+ {
+ state1 = 0;
+ cur_out = (float)(counter1);
+ counter1 = 0;
+ }
+ else if((in2[i] < 0.0f) && (prev2 >= 0.0f))
+ {
+ state2 = 0;
+ cur_out = (float)(counter2);
+ counter2 = 0;
+ }
+
+ if(state1)
+ counter1++;
+ if(state2)
+ counter2++;
+
+ prev1 = in1[i];
+ prev2 = in2[i];
+ out[i] = cur_out;
+ }
+
+ x->x_prev1 = prev1;
+ x->x_prev2 = prev2;
+ x->x_cur_out = cur_out;
+ x->x_counter1 = counter1;
+ x->x_counter2 = counter2;
+ x->x_state1 = state1;
+ x->x_state2 = state2;
+
+ return(w+6);
+}
+
+static void sigsin_phase_dsp(t_sigsin_phase *x, t_signal **sp)
+{
+ dsp_add(sigsin_phase_perform, 5, sp[0]->s_vec, sp[1]->s_vec, sp[2]->s_vec, x, sp[0]->s_n);
+}
+
+static void *sigsin_phase_new(void)
+{
+ t_sigsin_phase *x = (t_sigsin_phase *)pd_new(sigsin_phase_class);
+
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_signal, &s_signal);
+ outlet_new(&x->x_obj, &s_signal);
+
+ x->x_prev1 = 0.0f;
+ x->x_prev2 = 0.0f;
+ x->x_cur_out = 0.0f;
+ x->x_counter1 = 0;
+ x->x_counter2 = 0;
+ x->x_state1 = 0;
+ x->x_state2 = 0;
+ x->x_msi = 0;
+
+ return (x);
+}
+
+void sigsin_phase_setup(void)
+{
+ sigsin_phase_class = class_new(gensym("sin_phase~"), (t_newmethod)sigsin_phase_new,
+ 0, sizeof(t_sigsin_phase), 0, 0);
+ CLASS_MAINSIGNALIN(sigsin_phase_class, t_sigsin_phase, x_msi);
+ class_addmethod(sigsin_phase_class, (t_method)sigsin_phase_dsp, gensym("dsp"), 0);
+ class_sethelpsymbol(sigsin_phase_class, gensym("iemhelp/help-sin_phase~"));
+}
diff --git a/src/iemlib1/sigvcf_filter.c b/src/iemlib1/sigvcf_filter.c
new file mode 100644
index 0000000..ec14306
--- /dev/null
+++ b/src/iemlib1/sigvcf_filter.c
@@ -0,0 +1,334 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+/* ---------- vcf_filter~ - slow dynamic vcf_filter 1. and 2. order ----------- */
+
+typedef struct sigvcf_filter
+{
+ t_object x_obj;
+ float x_wn1;
+ float x_wn2;
+ float x_msi;
+ char x_filtname[6];
+} t_sigvcf_filter;
+
+t_class *sigvcf_filter_class;
+
+static t_int *sigvcf_filter_perform_snafu(t_int *w)
+{
+ float *in = (float *)(w[1]);
+ float *out = (float *)(w[4]);
+ int n = (t_int)(w[6]);
+
+ while(n--)
+ *out++ = *in++;
+ return(w+7);
+}
+
+/*
+lp2
+ wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+ *out++ = rcp*(wn0 + 2.0f*wn1 + wn2);
+ wn2 = wn1;
+ wn1 = wn0;
+
+bp2
+ wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+ *out++ = rcp*al*(wn0 - wn2);
+ wn2 = wn1;
+ wn1 = wn0;
+
+rbp2
+ wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+ *out++ = rcp*l*(wn0 - wn2);
+ wn2 = wn1;
+ wn1 = wn0;
+
+hp2
+ wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+ *out++ = rcp*(wn0 - 2.0f*wn1 + wn2);
+ wn2 = wn1;
+ wn1 = wn0;
+
+*/
+
+static t_int *sigvcf_filter_perform_lp2(t_int *w)
+{
+ float *in = (float *)(w[1]);
+ float *lp = (float *)(w[2]);
+ float *q = (float *)(w[3]);
+ float *out = (float *)(w[4]);
+ t_sigvcf_filter *x = (t_sigvcf_filter *)(w[5]);
+ int i, n = (t_int)(w[6]);
+ float wn0, wn1=x->x_wn1, wn2=x->x_wn2;
+ float l, al, l2, rcp;
+
+ for(i=0; i<n; i+=4)
+ {
+ l = lp[i];
+ if(q[i] < 0.000001)
+ al = 1000000.0*l;
+ else if(q[i] > 1000000.0)
+ al = 0.000001*l;
+ else
+ al = l/q[i];
+ l2 = l*l + 1.0f;
+ rcp = 1.0f/(al + l2);
+
+ wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+ *out++ = rcp*(wn0 + 2.0f*wn1 + wn2);
+ wn2 = wn1;
+ wn1 = wn0;
+
+ wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+ *out++ = rcp*(wn0 + 2.0f*wn1 + wn2);
+ wn2 = wn1;
+ wn1 = wn0;
+
+ wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+ *out++ = rcp*(wn0 + 2.0f*wn1 + wn2);
+ wn2 = wn1;
+ wn1 = wn0;
+
+ wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+ *out++ = rcp*(wn0 + 2.0f*wn1 + wn2);
+ wn2 = wn1;
+ wn1 = wn0;
+ }
+ /* NAN protect */
+ if(PD_BADFLOAT(wn2))
+ wn2 = 0.0f;
+ if(PD_BADFLOAT(wn1))
+ wn1 = 0.0f;
+
+ x->x_wn1 = wn1;
+ x->x_wn2 = wn2;
+ return(w+7);
+}
+
+static t_int *sigvcf_filter_perform_bp2(t_int *w)
+{
+ float *in = (float *)(w[1]);
+ float *lp = (float *)(w[2]);
+ float *q = (float *)(w[3]);
+ float *out = (float *)(w[4]);
+ t_sigvcf_filter *x = (t_sigvcf_filter *)(w[5]);
+ int i, n = (t_int)(w[6]);
+ float wn0, wn1=x->x_wn1, wn2=x->x_wn2;
+ float l, al, l2, rcp;
+
+ for(i=0; i<n; i+=4)
+ {
+ l = lp[i];
+ if(q[i] < 0.000001)
+ al = 1000000.0*l;
+ else if(q[i] > 1000000.0)
+ al = 0.000001*l;
+ else
+ al = l/q[i];
+ l2 = l*l + 1.0f;
+ rcp = 1.0f/(al + l2);
+
+
+ wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+ *out++ = rcp*al*(wn0 - wn2);
+ wn2 = wn1;
+ wn1 = wn0;
+
+ wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+ *out++ = rcp*al*(wn0 - wn2);
+ wn2 = wn1;
+ wn1 = wn0;
+
+ wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+ *out++ = rcp*al*(wn0 - wn2);
+ wn2 = wn1;
+ wn1 = wn0;
+
+ wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+ *out++ = rcp*al*(wn0 - wn2);
+ wn2 = wn1;
+ wn1 = wn0;
+ }
+ /* NAN protect */
+ if(PD_BADFLOAT(wn2))
+ wn2 = 0.0f;
+ if(PD_BADFLOAT(wn1))
+ wn1 = 0.0f;
+
+ x->x_wn1 = wn1;
+ x->x_wn2 = wn2;
+ return(w+7);
+}
+
+static t_int *sigvcf_filter_perform_rbp2(t_int *w)
+{
+ float *in = (float *)(w[1]);
+ float *lp = (float *)(w[2]);
+ float *q = (float *)(w[3]);
+ float *out = (float *)(w[4]);
+ t_sigvcf_filter *x = (t_sigvcf_filter *)(w[5]);
+ int i, n = (t_int)(w[6]);
+ float wn0, wn1=x->x_wn1, wn2=x->x_wn2;
+ float al, l, l2, rcp;
+
+ for(i=0; i<n; i+=4)
+ {
+ l = lp[i];
+ if(q[i] < 0.000001)
+ al = 1000000.0*l;
+ else if(q[i] > 1000000.0)
+ al = 0.000001*l;
+ else
+ al = l/q[i];
+ l2 = l*l + 1.0f;
+ rcp = 1.0f/(al + l2);
+
+
+ wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+ *out++ = rcp*l*(wn0 - wn2);
+ wn2 = wn1;
+ wn1 = wn0;
+
+ wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+ *out++ = rcp*l*(wn0 - wn2);
+ wn2 = wn1;
+ wn1 = wn0;
+
+ wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+ *out++ = rcp*l*(wn0 - wn2);
+ wn2 = wn1;
+ wn1 = wn0;
+
+ wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+ *out++ = rcp*l*(wn0 - wn2);
+ wn2 = wn1;
+ wn1 = wn0;
+ }
+ /* NAN protect */
+ if(PD_BADFLOAT(wn2))
+ wn2 = 0.0f;
+ if(PD_BADFLOAT(wn1))
+ wn1 = 0.0f;
+
+ x->x_wn1 = wn1;
+ x->x_wn2 = wn2;
+ return(w+7);
+}
+
+static t_int *sigvcf_filter_perform_hp2(t_int *w)
+{
+ float *in = (float *)(w[1]);
+ float *lp = (float *)(w[2]);
+ float *q = (float *)(w[3]);
+ float *out = (float *)(w[4]);
+ t_sigvcf_filter *x = (t_sigvcf_filter *)(w[5]);
+ int i, n = (t_int)(w[6]);
+ float wn0, wn1=x->x_wn1, wn2=x->x_wn2;
+ float l, al, l2, rcp, forw;
+
+ for(i=0; i<n; i+=4)
+ {
+ l = lp[i];
+ if(q[i] < 0.000001)
+ al = 1000000.0*l;
+ else if(q[i] > 1000000.0)
+ al = 0.000001*l;
+ else
+ al = l/q[i];
+ l2 = l*l + 1.0f;
+ rcp = 1.0f/(al + l2);
+ forw = rcp * (l2 - 1.0f);
+
+ wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+ *out++ = forw*(wn0 - 2.0f*wn1 + wn2);
+ wn2 = wn1;
+ wn1 = wn0;
+
+ wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+ *out++ = forw*(wn0 - 2.0f*wn1 + wn2);
+ wn2 = wn1;
+ wn1 = wn0;
+
+ wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+ *out++ = forw*(wn0 - 2.0f*wn1 + wn2);
+ wn2 = wn1;
+ wn1 = wn0;
+
+ wn0 = *in++ - rcp*(2.0f*(2.0f - l2)*wn1 + (l2 - al)*wn2);
+ *out++ = forw*(wn0 - 2.0f*wn1 + wn2);
+ wn2 = wn1;
+ wn1 = wn0;
+ }
+ /* NAN protect */
+ if(PD_BADFLOAT(wn2))
+ wn2 = 0.0f;
+ if(PD_BADFLOAT(wn1))
+ wn1 = 0.0f;
+
+ x->x_wn1 = wn1;
+ x->x_wn2 = wn2;
+ return(w+7);
+}
+
+static void sigvcf_filter_dsp(t_sigvcf_filter *x, t_signal **sp)
+{
+ if(!strcmp(x->x_filtname,"bp2"))
+ dsp_add(sigvcf_filter_perform_bp2, 6, sp[0]->s_vec, sp[1]->s_vec,
+ sp[2]->s_vec, sp[3]->s_vec, x, sp[0]->s_n);
+ else if(!strcmp(x->x_filtname,"rbp2"))
+ dsp_add(sigvcf_filter_perform_rbp2, 6, sp[0]->s_vec, sp[1]->s_vec,
+ sp[2]->s_vec, sp[3]->s_vec, x, sp[0]->s_n);
+ else if(!strcmp(x->x_filtname,"lp2"))
+ dsp_add(sigvcf_filter_perform_lp2, 6, sp[0]->s_vec, sp[1]->s_vec,
+ sp[2]->s_vec, sp[3]->s_vec, x, sp[0]->s_n);
+ else if(!strcmp(x->x_filtname,"hp2"))
+ dsp_add(sigvcf_filter_perform_hp2, 6, sp[0]->s_vec, sp[1]->s_vec,
+ sp[2]->s_vec, sp[3]->s_vec, x, sp[0]->s_n);
+ else
+ {
+ dsp_add(sigvcf_filter_perform_snafu, 6, sp[0]->s_vec, sp[1]->s_vec,
+ sp[2]->s_vec, sp[3]->s_vec, x, sp[0]->s_n);
+ post("vcf_filter~-Error: 1. initial-arguments: <sym> kind: lp2, bp2, rbp2, hp2!");
+ }
+}
+
+static void *sigvcf_filter_new(t_symbol *filt_typ)
+{
+ t_sigvcf_filter *x = (t_sigvcf_filter *)pd_new(sigvcf_filter_class);
+ char *c;
+
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_signal, &s_signal);
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_signal, &s_signal);
+ outlet_new(&x->x_obj, &s_signal);
+ x->x_msi = 0;
+ x->x_wn1 = 0.0;
+ x->x_wn2 = 0.0;
+ c = (char *)filt_typ->s_name;
+ c[5] = 0;
+ strcpy(x->x_filtname, c);
+ return(x);
+}
+
+void sigvcf_filter_setup(void)
+{
+ sigvcf_filter_class = class_new(gensym("vcf_filter~"), (t_newmethod)sigvcf_filter_new,
+ 0, sizeof(t_sigvcf_filter), 0, A_DEFSYM, 0);
+ CLASS_MAINSIGNALIN(sigvcf_filter_class, t_sigvcf_filter, x_msi);
+ class_addmethod(sigvcf_filter_class, (t_method)sigvcf_filter_dsp, gensym("dsp"), 0);
+ class_sethelpsymbol(sigvcf_filter_class, gensym("iemhelp/help-vcf_filter~"));
+}
diff --git a/src/iemlib1/soundfile_info.c b/src/iemlib1/soundfile_info.c
new file mode 100644
index 0000000..f7cbf6b
--- /dev/null
+++ b/src/iemlib1/soundfile_info.c
@@ -0,0 +1,261 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <math.h>
+
+#define SFI_HEADER_SAMPLERATE 0
+#define SFI_HEADER_FILENAME 1
+#define SFI_HEADER_MULTICHANNEL_FILE_LENGTH 2
+#define SFI_HEADER_HEADERBYTES 3
+#define SFI_HEADER_CHANNELS 4
+#define SFI_HEADER_BYTES_PER_SAMPLE 5
+#define SFI_HEADER_ENDINESS 6
+
+#define SFI_HEADER_SIZE 7
+
+
+
+/* -------------------- soundfile_info ------------------------------- */
+
+static t_class *soundfile_info_class;
+
+typedef struct _soundfile_info
+{
+ t_object x_obj;
+ long *x_begmem;
+ int x_size;
+ t_atom x_atheader[SFI_HEADER_SIZE];
+ t_canvas *x_canvas;
+ void *x_list_out;
+} t_soundfile_info;
+
+static short soundfile_info_str2short(char *cvec)
+{
+ short s=0;
+ unsigned char *uc=(unsigned char *)cvec;
+
+ s += (short)(*uc);
+ s += (short)(*(uc+1)*256);
+ return(s);
+}
+
+static long soundfile_info_str2long(char *cvec)
+{
+ long l=0;
+ unsigned char *uc=(unsigned char *)cvec;
+
+ l += (long)(*uc);
+ l += (long)(*(uc+1)*256);
+ l += (long)(*(uc+2)*65536);
+ l += (long)(*(uc+3)*16777216);
+ return(l);
+}
+
+static void soundfile_info_read(t_soundfile_info *x, t_symbol *filename)
+{
+ char completefilename[400];
+ int i, n, n2, n4, filesize, read_chars, header_size=0, ch, bps, sr;
+ FILE *fh;
+ t_atom *at;
+ char *cvec;
+ long ll;
+ short ss;
+
+ if(filename->s_name[0] == '/')/*make complete path + filename*/
+ {
+ strcpy(completefilename, filename->s_name);
+ }
+ else if(((filename->s_name[0] >= 'A')&&(filename->s_name[0] <= 'Z')||
+ (filename->s_name[0] >= 'a')&&(filename->s_name[0] <= 'z'))&&
+ (filename->s_name[1] == ':')&&(filename->s_name[2] == '/'))
+ {
+ strcpy(completefilename, filename->s_name);
+ }
+ else
+ {
+ strcpy(completefilename, canvas_getdir(x->x_canvas)->s_name);
+ strcat(completefilename, "/");
+ strcat(completefilename, filename->s_name);
+ }
+
+ fh = fopen(completefilename,"rb");
+ if(!fh)
+ {
+ post("soundfile_info_read: cannot open %s !!\n", completefilename);
+ }
+ else
+ {
+ n = x->x_size;
+ n2 = sizeof(short) * x->x_size;
+ n4 = sizeof(long) * x->x_size;
+ fseek(fh, 0, SEEK_END);
+ filesize = ftell(fh);
+ fseek(fh,0,SEEK_SET);
+ read_chars = (int)fread(x->x_begmem, sizeof(char), n4, fh) /2;
+ fclose(fh);
+// post("read chars = %d", read_chars);
+ cvec = (char *)x->x_begmem;
+ if(read_chars > 4)
+ {
+ if(strncmp(cvec, "RIFF", 4))
+ {
+ post("soundfile_info_read-error: %s is no RIFF-WAVE-file", completefilename);
+ goto soundfile_info_end;
+ }
+ header_size += 8;
+ cvec += 8;
+ if(strncmp(cvec, "WAVE", 4))
+ {
+ post("soundfile_info_read-error: %s is no RIFF-WAVE-file", completefilename);
+ goto soundfile_info_end;
+ }
+ header_size += 4;
+ cvec += 4;
+
+ for(i=header_size/2; i<read_chars; i++)
+ {
+ if(!strncmp(cvec, "fmt ", 4))
+ goto soundfile_info_fmt;
+ header_size += 2;
+ cvec += 2;
+ }
+ post("soundfile_info_read-error: %s has at begin no format-chunk", completefilename);
+ goto soundfile_info_end;
+
+soundfile_info_fmt:
+ header_size += 4;
+ cvec += 4;
+ ll = soundfile_info_str2long(cvec);
+ if(ll != 16)
+ {
+ post("soundfile_info_read-error: %s has a format-chunk not equal to 16", completefilename);
+ goto soundfile_info_end;
+ }
+ header_size += 4;
+ cvec += 4;
+ ss = soundfile_info_str2short(cvec);
+ /* format */
+ if(ss != 1) /* PCM = 1 */
+ {
+ post("soundfile_info_read-error: %s is not PCM-format coded", completefilename);
+ goto soundfile_info_end;
+ }
+ header_size += 2;
+ cvec += 2;
+ ss = soundfile_info_str2short(cvec);
+ /* channels */
+ if((ss < 1) || (ss > 100))
+ {
+ post("soundfile_info_read-error: %s has no common channel-number", completefilename);
+ goto soundfile_info_end;
+ }
+ SETFLOAT(x->x_atheader+SFI_HEADER_CHANNELS, (float)ss);
+ ch = ss;
+ header_size += 2;
+ cvec += 2;
+ ll = soundfile_info_str2long(cvec);
+ /* samplerate */
+ if((ll > 400000) || (ll < 200))
+ {
+ post("soundfile_info_read-error: %s has no common samplerate", completefilename);
+ goto soundfile_info_end;
+ }
+ SETFLOAT(x->x_atheader+SFI_HEADER_SAMPLERATE, (float)ll);
+ sr = ll;
+ header_size += 4;
+ cvec += 4;
+
+ header_size += 4; /* bytes_per_sec */
+ cvec += 4;
+ ss = soundfile_info_str2short(cvec);
+
+ /* bytes_per_sample */
+ if((ss < 1) || (ss > 100))
+ {
+ post("soundfile_info_read-error: %s has no common number of bytes per sample", completefilename);
+ goto soundfile_info_end;
+ }
+ SETFLOAT(x->x_atheader+SFI_HEADER_BYTES_PER_SAMPLE, (float)(ss/ch));
+ bps = ss;
+ header_size += 2;
+ cvec += 2;
+
+ header_size += 2; /* bits_per_sample */
+ cvec += 2;
+
+ for(i=header_size/2; i<read_chars; i++)
+ {
+ if(!strncmp(cvec, "data", 4))
+ goto soundfile_info_data;
+ header_size += 2;
+ cvec += 2;
+ }
+ post("soundfile_info_read-error: %s has at begin no data-chunk", completefilename);
+ goto soundfile_info_end;
+
+soundfile_info_data:
+ header_size += 8;
+ cvec += 8;
+
+ SETFLOAT(x->x_atheader+SFI_HEADER_HEADERBYTES, (float)header_size);
+
+ filesize -= header_size;
+ filesize /= bps;
+ SETFLOAT(x->x_atheader+SFI_HEADER_MULTICHANNEL_FILE_LENGTH, (float)filesize);
+ SETSYMBOL(x->x_atheader+SFI_HEADER_ENDINESS, gensym("l"));
+ SETSYMBOL(x->x_atheader+SFI_HEADER_FILENAME, gensym(completefilename));
+
+/* post("ch = %d", ss);
+ post("sr = %d", ll);
+ post("bps = %d", ss/ch);
+ post("head = %d", header_size);
+ post("len = %d", filesize);*/
+
+ outlet_list(x->x_list_out, &s_list, SFI_HEADER_SIZE, x->x_atheader);
+
+
+soundfile_info_end:
+
+ ;
+ }
+ }
+}
+
+static void soundfile_info_free(t_soundfile_info *x)
+{
+ freebytes(x->x_begmem, x->x_size * sizeof(long));
+}
+
+static void *soundfile_info_new(void)
+{
+ t_soundfile_info *x = (t_soundfile_info *)pd_new(soundfile_info_class);
+
+ x->x_size = 10000;
+ x->x_begmem = (long *)getbytes(x->x_size * sizeof(long));
+ x->x_list_out = outlet_new(&x->x_obj, &s_list);
+ x->x_canvas = canvas_getcurrent();
+ return (x);
+}
+
+/* ---------------- global setup function -------------------- */
+
+void soundfile_info_setup(void)
+{
+ soundfile_info_class = class_new(gensym("soundfile_info"), (t_newmethod)soundfile_info_new,
+ (t_method)soundfile_info_free, sizeof(t_soundfile_info), 0, 0);
+ class_addmethod(soundfile_info_class, (t_method)soundfile_info_read, gensym("read"), A_SYMBOL, 0);
+ class_sethelpsymbol(soundfile_info_class, gensym("iemhelp/help-soundfile_info"));
+}
+
diff --git a/src/iemlib1/split.c b/src/iemlib1/split.c
new file mode 100644
index 0000000..0a3bcff
--- /dev/null
+++ b/src/iemlib1/split.c
@@ -0,0 +1,54 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+/* --------------------------- split ----------------------------- */
+
+typedef struct _split
+{
+ t_object x_obj;
+ t_outlet *x_out_less;
+ t_outlet *x_out_greater_equal;
+ float x_threshold;
+} t_split;
+
+static t_class *split_class;
+
+static void split_float(t_split *x, t_float f)
+{
+ if(f < x->x_threshold)
+ outlet_float(x->x_out_less, f);
+ else
+ outlet_float(x->x_out_greater_equal, f);
+}
+
+static void *split_new(t_floatarg f)
+{
+ t_split *x = (t_split *)pd_new(split_class);
+ floatinlet_new(&x->x_obj, &x->x_threshold);
+ x->x_out_less = outlet_new(&x->x_obj, &s_float);
+ x->x_out_greater_equal = outlet_new(&x->x_obj, &s_float);
+ x->x_threshold = f;
+ return (x);
+}
+
+void split_setup(void)
+{
+ split_class = class_new(gensym("split"), (t_newmethod)split_new, 0,
+ sizeof(t_split), 0, A_DEFFLOAT, 0);
+ class_addfloat(split_class, split_float);
+ class_sethelpsymbol(split_class, gensym("iemhelp/help-split"));
+} \ No newline at end of file
diff --git a/src/iemlib1/v2db.c b/src/iemlib1/v2db.c
new file mode 100644
index 0000000..b3e342d
--- /dev/null
+++ b/src/iemlib1/v2db.c
@@ -0,0 +1,45 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+/* ---------------- v2db - value to dB converter. ----------------- */
+
+static t_class *v2db_class;
+
+float v2db(float f)
+{
+ return (f <= 0 ? -199.9 : 8.6858896381*log(f));
+}
+
+static void v2db_float(t_object *x, t_float f)
+{
+ outlet_float(x->ob_outlet, v2db(f));
+}
+
+static void *v2db_new(void)
+{
+ t_object *x = (t_object *)pd_new(v2db_class);
+ outlet_new(x, &s_float);
+ return (x);
+}
+
+void v2db_setup(void)
+{
+ v2db_class = class_new(gensym("v2db"), v2db_new, 0,
+ sizeof(t_object), 0, 0);
+ class_addfloat(v2db_class, (t_method)v2db_float);
+ class_sethelpsymbol(v2db_class, gensym("iemhelp/help-v2db"));
+}