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authorEd Kelly <edkelly@users.sourceforge.net>2005-12-01 11:22:08 +0000
committerEd Kelly <edkelly@users.sourceforge.net>2005-12-01 11:22:08 +0000
commit08596048cf2b13cfba6d7fabe5ad5604875d9a45 (patch)
treead228864bcce3220f169366d40849aeb11722f4f /externals/build/src/voicing_detector~.c
parentbeff9cda2230f9e51c49b54566e98e90d5f5a81b (diff)
This commit was generated by cvs2svn to compensate for changes in r4096,
which included commits to RCS files with non-trunk default branches. svn path=/trunk/; revision=4097
Diffstat (limited to 'externals/build/src/voicing_detector~.c')
-rw-r--r--externals/build/src/voicing_detector~.c131
1 files changed, 131 insertions, 0 deletions
diff --git a/externals/build/src/voicing_detector~.c b/externals/build/src/voicing_detector~.c
new file mode 100644
index 00000000..5ed5a3d0
--- /dev/null
+++ b/externals/build/src/voicing_detector~.c
@@ -0,0 +1,131 @@
+#include "m_pd.h"
+#include <math.h>
+
+static t_class *voicing_detector_tilde_class;
+
+typedef struct _voicing_control
+{
+ t_float *c_input;
+ t_float f_sum_abs;
+ t_atom otemp[4096];
+ t_int method;
+} t_voicing_control;
+
+typedef struct _voicing_detector_tilde
+{
+ t_object x_obj;
+ t_float f_dummy, f_thresh, f_low, f_high;
+ t_voicing_control x_ctl;
+ t_outlet *voiced, *prob;
+} t_voicing_detector_tilde;
+
+static t_int *voicing_detector_tilde_perform(t_int *w)
+{
+ t_voicing_detector_tilde *x = (t_voicing_detector_tilde *)(w[1]);
+ t_voicing_control *ctl = (t_voicing_control *)(w[2]);
+ t_int n = (int)(w[3]);
+ t_float *in = ctl->c_input;
+ if (x->f_high < x->f_low)
+ {
+ float tmp = x->f_low;
+ x->f_low = x->f_high;
+ x->f_high = tmp;
+ }
+ t_float current, previous, next, temp0, avg, max, peak0;
+ current = previous = next = temp0 = avg = max = peak0 = 0;
+ t_float min = 1000;
+ t_float samplerate = sys_getsr();
+ t_float start = samplerate / x->f_high;
+ start = start > 1 ? start : 1;
+ t_float end = samplerate / x->f_low;
+ end = end < (n-1) ? end : n-1;
+ t_float result, prob, diff, diff2;
+ t_int i = 0;
+ int j;
+ int l = n;
+ int maxp = 0;
+ int maxi = 0;
+ float temp[n];
+ ctl->f_sum_abs = 0.0;
+ for (i=0;i<l;i++)
+ {
+ ctl->f_sum_abs += fabs(in[i]); /* I have to calculate f_sum_abs for the whole block before I can calculate amdf */
+ temp[i] = 0.0;
+ SETFLOAT(&ctl->otemp[i], 0.0);
+ }
+ for (i=1;i<l;i++)
+ {
+ for (j=start;j<=end;j++) /* the Average Magnitude Difference Function */
+ {
+ temp[j] = i + j < l ? in[i+j] : 0.0;
+ temp0 = atom_getfloatarg(i, 4096, ctl->otemp);
+ temp0 += i == 0 ? 0.0 : fabs(in[j] - temp[j]);
+ }
+ temp0 += ((float)i / (float)l) * ctl->f_sum_abs;
+ SETFLOAT(&ctl->otemp[i], temp0);
+ }
+
+ for (i=start+1;i<end;i++)
+ {
+ previous= atom_getfloatarg(i-1, 2048, ctl->otemp);
+ current = atom_getfloatarg(i, 2048, ctl->otemp);
+ next = atom_getfloatarg(i+1, 2048, ctl->otemp);
+ max = current > max ? current : max;
+ min = current < min ? current : min;
+ avg += current;
+ }
+ avg = avg / (end-start);
+ diff = avg - min;
+ diff2 = max - min;
+ result = ctl->method == 0 ? ((avg - min) > (x->f_thresh) ? 1 : 0) : ((max - min) > x->f_thresh ? 1 : 0);
+ prob = diff2 / max;
+ outlet_float(x->prob, prob);
+ outlet_float(x->voiced, result);
+ return(w+4);
+}
+
+void voicing_detector_tilde_bound(t_voicing_detector_tilde *x, t_floatarg f1, t_floatarg f2)
+{
+ x->f_low = f1;
+ x->f_high = f2;
+}
+
+void voicing_detector_tilde_method(t_voicing_detector_tilde *x, t_floatarg f)
+{
+ x->x_ctl.method = f > 0 ? 1 : 0;
+}
+
+void *voicing_detector_tilde_dsp(t_voicing_detector_tilde *x, t_signal **sp)
+{
+ x->x_ctl.c_input = sp[0]->s_vec;
+ dsp_add(voicing_detector_tilde_perform, 3, x, &x->x_ctl, sp[0]->s_n);
+ return (void *)x;
+}
+
+void *voicing_detector_tilde_new(t_floatarg f)
+{
+ t_voicing_detector_tilde *x = (t_voicing_detector_tilde *)pd_new(voicing_detector_tilde_class);
+ x->f_thresh = f < 0 ? f : 25;
+ x->f_low = 60;
+ x->f_high = 500;
+
+ floatinlet_new (&x->x_obj, &x->f_thresh);
+ x->voiced = outlet_new(&x->x_obj, gensym("float"));
+ x->prob = outlet_new(&x->x_obj, gensym("float"));
+ return (void *)x;
+}
+
+void voicing_detector_tilde_setup(void)
+{
+ voicing_detector_tilde_class = class_new(gensym("voicing_detector~"), (t_newmethod)voicing_detector_tilde_new, 0, sizeof(t_voicing_detector_tilde), CLASS_DEFAULT, A_DEFFLOAT, 0);
+
+ post("\n-->AMDF voicing detector v0.2");
+ post("-->by Nicolas Chetry <okin@altern.org>");
+ post("-->& Edward Kelly <morph_2016@yahoo.co.uk>");
+
+ class_addmethod(voicing_detector_tilde_class, (t_method)voicing_detector_tilde_bound, gensym("bound"), A_DEFFLOAT, A_DEFFLOAT, 0);
+ class_addmethod(voicing_detector_tilde_class, (t_method)voicing_detector_tilde_method, gensym("method"), A_DEFFLOAT, 0);
+ class_addmethod(voicing_detector_tilde_class, (t_method)voicing_detector_tilde_dsp, gensym("dsp"), 0);
+ class_sethelpsymbol(voicing_detector_tilde_class, gensym("help-voicing_detector~"));
+ CLASS_MAINSIGNALIN(voicing_detector_tilde_class, t_voicing_detector_tilde, f_dummy);
+}