From 506b8e7dedb80d79bf015e47d92e8b8dd8284584 Mon Sep 17 00:00:00 2001 From: Hans-Christoph Steiner Date: Sat, 16 Aug 2003 17:08:55 +0000 Subject: added files straight from Yves' sources svn path=/trunk/externals/unauthorized/; revision=864 --- wahwah~/CHANGES.LOG | 2 + wahwah~/COPYING | 280 +++++++++++++++++++++++++++++++++ wahwah~/INSTALL | 15 ++ wahwah~/Makefile | 82 ++++++++++ wahwah~/README | 24 +++ wahwah~/help-wahwah~.pd | 48 ++++++ wahwah~/rs-wahwah~.pd | 348 ++++++++++++++++++++++++++++++++++++++++ wahwah~/wahwah~.c | 409 ++++++++++++++++++++++++++++++++++++++++++++++++ 8 files changed, 1208 insertions(+) create mode 100644 wahwah~/CHANGES.LOG create mode 100644 wahwah~/COPYING create mode 100644 wahwah~/INSTALL create mode 100644 wahwah~/Makefile create mode 100644 wahwah~/README create mode 100644 wahwah~/help-wahwah~.pd create mode 100644 wahwah~/rs-wahwah~.pd create mode 100644 wahwah~/wahwah~.c (limited to 'wahwah~') diff --git a/wahwah~/CHANGES.LOG b/wahwah~/CHANGES.LOG new file mode 100644 index 0000000..dca0aa9 --- /dev/null +++ b/wahwah~/CHANGES.LOG @@ -0,0 +1,2 @@ +0.1 + initial wahwah~ implementation diff --git a/wahwah~/COPYING b/wahwah~/COPYING new file mode 100644 index 0000000..2128a66 --- /dev/null +++ b/wahwah~/COPYING @@ -0,0 +1,280 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. 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It's possible to damage e.g. hardware or your hearing +due to a bug or for other reasons. +We do not warrant that the program is free of infringement of any third-party +patents. + +***************************************************************************** + diff --git a/wahwah~/help-wahwah~.pd b/wahwah~/help-wahwah~.pd new file mode 100644 index 0000000..8afeb3c --- /dev/null +++ b/wahwah~/help-wahwah~.pd @@ -0,0 +1,48 @@ +#N canvas 45 57 817 573 10; +#X text 319 534 comments & bugs @ ydegoyon.free.fr; +#X text 431 111 Wahwah~ : used in psychedelic music; +#X obj 144 411 dac~; +#X obj 148 377 rs-wahwah~; +#X msg 94 62 bang; +#X obj 93 84 openpanel; +#X obj 93 104 t s b; +#X obj 150 106 float \$0; +#X text 101 39 Step 1 : Load a sound file; +#X obj 93 127 route float; +#X obj 94 219 soundfiler; +#X text 151 55 ( maybe \, a guitar sound ? ); +#X obj 93 150 makefilename %d-sample; +#X obj 582 374 table \$0-sample; +#X msg 94 197 read -resize \$1 \$2; +#X obj 95 176 pack s s; +#X msg 146 307 bang; +#X text 191 307 Step 2 : Start playing; +#X obj 59 288 adc~; +#X text 229 379 Step 3 : Modify parameters; +#X text 487 483 ( http://st.karelia.ru/~smlalx ); +#X text 320 470 a DOS guitar effects software that rocks; +#X text 321 484 written by Alexei Smoli; +#X obj 606 263 loadbang; +#X msg 608 293 \; pd dsp 1; +#X text 319 456 the algorithm is borrowed from Digital Effects \,; +#X obj 146 354 tabplay~ \$0-sample; +#X text 35 266 Plug a guitar ??; +#X msg 228 330 stop; +#X obj 146 330 metro 250; +#X connect 3 0 2 0; +#X connect 3 0 2 1; +#X connect 4 0 5 0; +#X connect 5 0 6 0; +#X connect 6 0 15 0; +#X connect 6 1 7 0; +#X connect 7 0 9 0; +#X connect 9 0 12 0; +#X connect 12 0 15 1; +#X connect 14 0 10 0; +#X connect 15 0 14 0; +#X connect 16 0 29 0; +#X connect 18 0 3 0; +#X connect 23 0 24 0; +#X connect 26 0 3 0; +#X connect 28 0 29 0; +#X connect 29 0 26 0; diff --git a/wahwah~/rs-wahwah~.pd b/wahwah~/rs-wahwah~.pd new file mode 100644 index 0000000..af5c256 --- /dev/null +++ b/wahwah~/rs-wahwah~.pd @@ -0,0 +1,348 @@ +#N canvas 97 16 837 658 10; +#X obj 87 469 outlet~; +#X msg 149 24 preset 1; +#X msg 149 46 preset 2; +#X msg 149 71 preset 3; +#X msg 149 95 preset 4; +#X msg 149 118 preset 5; +#X text 216 25 fast change medium wah-wah; +#X text 217 46 slow change medium wah-wah; +#X text 219 71 fast wah-wah; +#X text 219 94 ranged wah-wah; +#X obj 53 307 inlet~; +#X text 220 117 wah-wah 400/2000 Hz; +#X obj 177 468 tabwrite~ owahwah; +#N canvas 0 0 450 300 graph1 0; +#X array owahwah 2000 float 1; +#A 0 -0.039093 -0.0409546 -0.0498657 -0.0647583 -0.0871887 -0.115601 +-0.149658 -0.186188 -0.222839 -0.259918 -0.295898 -0.328308 -0.356567 +-0.380859 -0.399689 -0.412933 -0.419983 -0.419434 -0.410675 -0.392517 +-0.365753 -0.331726 -0.29129 -0.245361 -0.196503 -0.148499 -0.103546 +-0.0623779 -0.0287476 -0.00424194 0.00881958 0.0116577 0.00469971 -0.0116577 +-0.0361023 -0.0664978 -0.100555 -0.136414 -0.172302 -0.205841 -0.235596 +-0.261932 -0.283508 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-0.610596 -0.502045 -0.315704 -0.0520325 +0.280945 0.666718 0.999969; +#X coords 0 2 1999 -2 200 140 1; +#X restore 596 461 graph; +#X msg 177 446 bang; +#X obj 602 315 hsl 128 15 0 100 0 0 empty empty empty 20 8 0 8 -262144 +-1 -1 1270 0; +#X text 607 295 The pedal (step); +#X obj 601 216 f; +#X obj 632 216 + 1; +#X msg 599 158 bang; +#X obj 645 242 > 100; +#X obj 688 241 route 1; +#X msg 685 215 -1; +#X msg 559 216 0; +#X obj 693 185 route 1; +#X obj 664 186 < 0; +#X msg 690 159 1; +#X msg 555 160 stop; +#X obj 161 187 hsl 128 15 0 3000 0 0 empty empty empty 20 8 0 8 -262144 +-1 -1 5600 0; +#X text 162 166 Minimum freq [ 0 - 3000 ]; +#X obj 212 221 hsl 128 15 0 3000 0 0 empty empty empty 20 8 0 8 -262144 +-1 -1 3300 0; +#X text 207 205 Maximum freq [ 0 - 3000 ]; +#X obj 237 259 hsl 128 15 0 1000 0 0 empty empty empty 20 8 0 8 -262144 +-1 -1 4200 0; +#X text 234 241 Sensibility [ 0 - 1000 ]; +#X obj 285 292 hsl 128 15 0 100 0 0 empty empty empty 20 8 0 8 -262144 +-1 -1 1100 0; +#X 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connect 25 0 24 0; +#X connect 26 0 18 1; +#X connect 27 0 44 0; +#X connect 28 0 42 1; +#X connect 30 0 42 2; +#X connect 32 0 42 3; +#X connect 34 0 42 4; +#X connect 36 0 42 5; +#X connect 38 0 42 6; +#X connect 42 0 0 0; +#X connect 42 0 12 0; +#X connect 44 0 17 0; +#X connect 45 0 19 0; diff --git a/wahwah~/wahwah~.c b/wahwah~/wahwah~.c new file mode 100644 index 0000000..72c77d4 --- /dev/null +++ b/wahwah~/wahwah~.c @@ -0,0 +1,409 @@ +/* Copyright (c) 2002 Yves Degoyon. */ +/* For information on usage and redistribution, and for a DISCLAIMER OF ALL */ +/* WARRANTIES, see the file, "COPYING" in this distribution. */ +/* */ +/* wahwah~ -- a kind of effect used in psychedelic music */ +/* the algorithm was taken from Digital Effects, */ +/* a guitar effects software for DOS which rocks, written by Alexey Smoli */ +/* ( http://st.karelia.ru/~smlalx/ ) */ +/* */ +/* This program is free software; you can redistribute it and/or */ +/* modify it under the terms of the GNU General Public License */ +/* as published by the Free Software Foundation; either version 2 */ +/* of the License, or (at your option) any later version. */ +/* */ +/* See file LICENSE for further informations on licensing terms. */ +/* */ +/* This program is distributed in the hope that it will be useful, */ +/* but WITHOUT ANY WARRANTY; without even the implied warranty of */ +/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */ +/* GNU General Public License for more details. */ +/* */ +/* You should have received a copy of the GNU General Public License */ +/* along with this program; if not, write to the Free Software */ +/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +/* */ +/* Based on PureData by Miller Puckette and others. */ +/* */ +/* Made while listening to : */ +/* */ +/* Crass -- "Shaved Women ( Collaborators )" */ +/* Zounds -- "Can't Cheat Karma" */ +/* */ +/* Special message for the french : */ +/* "Delay all your work...and go vote against national front" */ +/* ---------------------------------------------------------------------------- */ + +#include "m_pd.h" +#include +#include + +#ifdef NT +#define M_PI 3.14159265358979323846 +#endif + +#define BFSZ 4096 /* main delay buffer */ +#define BLOCK_DELAY 10 /* number of blocks to delay */ +#define NA 0.0 /* param not applicable */ +#define COEFFSIZE 3000 /* coefficients size */ +#define NBCOEFFS 5 /* number of coefficients */ + +static char *wahwah_version = "wahwah~: an audio wahwah, version 0.1 (ydegoyon@free.fr)"; + +typedef struct _wahwah +{ + t_object x_obj; + double *x_buf; + t_int x_samplerate; + t_float *x_coeffs; + double x_minfc; /* min frequency Hz */ /* 0< <3000 */ + double x_maxfc; /* max frequency Hz */ /* 0< <3000 */ + double x_sense; /* increase/decrease frequency change by one mouse movement Hz */ /* 0< <=1000 */ + double x_maxstep; /* maximum frequency change step KHz */ /* 0< <=100 */ + double x_dbgain; /* peaking filter gain dB */ /* -15<= <=15 */ + double x_bandwidth; /* bandwidth in octaves (between midpoint (dBgain/2) + gain frequencies) or */ /* 0< <10 */ + double x_Q; /* the EE kinda definition */ /* 0< <=1 */ + + /* variables for audio computation */ + double min_coef,max_coef,cur_coef,step,maxstep; + t_int down; + /* amplitudes */ + short x0,x1,x2; + t_int y0,y1,y2; + + t_float x_f; +} t_wahwah; + +static t_class *wahwah_class; + +static void wahwah_set_coeffs (t_wahwah *x) +{ + t_int i; + double omega; + double sn,cs; + double alpha = 0.0; + /* filter coefficients */ + double a0,a1,a2,b0,b1,b2; + double A; + + A = exp(x->x_dbgain/40.0)*log(10.0); + for (i = 0; i < COEFFSIZE; i++) + { + omega = 2.0*M_PI*(double)i/(double)x->x_samplerate; + sn = sin(omega); + cs = cos(omega); + if (x->x_bandwidth) + alpha = sn*sin(log(2.0)/2.0*x->x_bandwidth*omega/sn); + else + /* if Q is specified instead of bandwidth */ + if (x->x_Q) + alpha = sn/(2.0*x->x_Q); + + /* then compute the coefs for whichever filter type you want */ + b0 = 1.0 + alpha*A; + b1 = -2.0*cs ; + b2 = 1.0 - alpha*A; + a0 = 1.0 + alpha/A; + a1 = -2.0*cs ; + a2 = 1.0 - alpha/A; + + *(x->x_coeffs+i*NBCOEFFS) = (b0/a0); + *(x->x_coeffs+i*NBCOEFFS+1) = (b1/a0); + *(x->x_coeffs+i*NBCOEFFS+2) = (b2/a0); + *(x->x_coeffs+i*NBCOEFFS+3) = (a1/a0); + *(x->x_coeffs+i*NBCOEFFS+4) = (a2/a0); + // post( "wahwah~ : coeff : %f", *(x->x_coeffs+i*NBCOEFFS+4) ); + } + x->min_coef = x->x_minfc; + x->max_coef = x->x_maxfc; + x->cur_coef = x->min_coef; + x->down = 1; + x->step = 0; + x->maxstep = x->x_maxstep/(double)x->x_samplerate*1000.0; +} + +static void wahwah_bandwidth(t_wahwah *x, t_floatarg fbandwidth ) +{ + if ( fbandwidth > 10.0 ) + { + fbandwidth = 10.0; + } + if ( fbandwidth < 0.0 ) + { + fbandwidth = 0.0; + } + x->x_bandwidth = fbandwidth; + // post( "wahwah~ : bandwidth: %f", x->x_bandwidth ); + wahwah_set_coeffs( x ); +} + +static void wahwah_dbgain(t_wahwah *x, t_floatarg fdbgain ) +{ + if ( fdbgain > 15.0 ) + { + fdbgain = 15.0; + } + if ( fdbgain < -15.0 ) + { + fdbgain = -15.0; + } + x->x_dbgain = fdbgain; + // post( "wahwah~ : dbgain: %f", x->x_dbgain ); + wahwah_set_coeffs( x ); +} + +static void wahwah_maxstep(t_wahwah *x, t_floatarg fmaxstep ) +{ + if ( fmaxstep > 100.0 ) + { + fmaxstep = 100.0; + } + if ( fmaxstep < 0.0 ) + { + fmaxstep = 0.0; + } + x->x_maxstep = fmaxstep; + // post( "wahwah~ : maxstep: %f", x->x_maxstep ); + wahwah_set_coeffs( x ); +} + +static void wahwah_sensibility(t_wahwah *x, t_floatarg fsensibility ) +{ + if ( fsensibility > 1000.0 ) + { + fsensibility = 1000.0; + } + if ( fsensibility < 0.0 ) + { + fsensibility = 0.0; + } + x->x_sense = fsensibility; + // post( "wahwah~ : sensibility: %f", x->x_sense ); + wahwah_set_coeffs( x ); +} + +static void wahwah_maxfreq(t_wahwah *x, t_floatarg fmaxfreq ) +{ + if ( fmaxfreq > 3000.0 ) + { + fmaxfreq = 3000.0; + } + if ( fmaxfreq < 0.0 ) + { + fmaxfreq = 0.0; + } + x->x_maxfc = fmaxfreq; + // post( "wahwah~ : maxfreq: %f", x->x_maxfc ); + wahwah_set_coeffs( x ); +} + +static void wahwah_minfreq(t_wahwah *x, t_floatarg fminfreq ) +{ + if ( fminfreq > 3000.0 ) + { + fminfreq = 3000.0; + } + if ( fminfreq < 0.0 ) + { + fminfreq = 0.0; + } + x->x_minfc = fminfreq; + // post( "wahwah~ : minfreq: %f", x->x_minfc ); + wahwah_set_coeffs( x ); +} + +static void wahwah_step(t_wahwah *x, t_floatarg fstep ) +{ + if ( fstep > x->x_maxstep ) + { + fstep = x->x_maxstep; + } + if ( fstep < 0 ) + { + fstep = 0; + } + x->step = fstep*x->x_sense/x->x_samplerate; +} + +static t_int *wahwah_perform(t_int *w) +{ + t_float *in = (t_float *)(w[1]); + t_float *out = (t_float *)(w[2]); + t_int n = (int)(w[3]); + t_wahwah *x = (t_wahwah*)(w[4]); + t_int i; + + for (i=0; ix0 = (int)((*(in+i))*32768); + + x->y0 = (*(x->x_coeffs+(int)x->cur_coef*NBCOEFFS))*x->x0 + + (*(x->x_coeffs+(int)x->cur_coef*NBCOEFFS+1))*x->x1 + + (*(x->x_coeffs+(int)x->cur_coef*NBCOEFFS+2))*x->x2 + - (*(x->x_coeffs+(int)x->cur_coef*NBCOEFFS+3))*x->y1 + - (*(x->x_coeffs+(int)x->cur_coef*NBCOEFFS+4))*x->y2; + + x->y2 = x->y1; + x->y1 = x->y0; + x->x2 = x->x1; + x->x1 = x->x0; + + if(x->y0 > 32767.0) + x->y0 = 32767.0; + else if(x->y0 < -32768.0) + x->y0 = -32768.0; + + *(out+i) = (t_float)(x->y0) / 32768.0; + + x->cur_coef = x->cur_coef+x->down*x->step*(abs(x->x0)/(0.5*32768.0)); + // post ( "wahwah~ : cur coeff : %f", x->cur_coef ); + if(x->cur_coef > x->max_coef) + { + x->cur_coef = x->max_coef; + x->down = -1; + } + else if(x->cur_coef < x->min_coef) + { + x->cur_coef = x->min_coef; + x->down = 1; + } + + } + + return (w+5); +} + +static void wahwah_preset(t_wahwah *x, t_float pnumber) +{ + switch ( (int)pnumber ) + { + /* fast change medium wah wah */ + case 1: + x->x_minfc = 100.0; + x->x_maxfc = 1600.0; + x->x_sense = 100.0; + x->x_maxstep = 60.0; + x->x_dbgain = 15.0; + x->x_Q = 1.0; + break; + + /* slow change medium wah wah */ + case 2: + x->x_minfc = 100.0; + x->x_maxfc = 1600.0; + x->x_sense = 50.0; + x->x_maxstep = 36.0; + x->x_dbgain = 15.0; + x->x_Q = 1.0; + break; + + /* fast wah wah */ + case 3: + x->x_minfc = 100.0; + x->x_maxfc = 600.0; + x->x_sense = 100.0; + x->x_maxstep = 66.0; + x->x_dbgain = 15.0; + x->x_Q = 1.0; + break; + + /* ranged wah wah */ + case 4: + x->x_minfc = 10.0; + x->x_maxfc = 2900.0; + x->x_sense = 100.0; + x->x_maxstep = 66.0; + x->x_dbgain = 15.0; + x->x_Q = 1.0; + break; + + /* wah wah 400 - 2000 */ + case 5: + x->x_minfc = 400.0; + x->x_maxfc = 2000.0; + x->x_sense = 100.0; + x->x_maxstep = 66.0; + x->x_dbgain = 15.0; + x->x_Q = 1.0; + break; + + default: + post( "wahwah~ : unknown preset requested : %d", pnumber ); + return; + break; + } + wahwah_set_coeffs( x ); +} + +static void wahwah_dsp(t_wahwah *x, t_signal **sp) +{ + dsp_add(wahwah_perform, 4, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n, x ); +} + + /* clean up */ +static void wahwah_free(t_wahwah *x) +{ + if ( x->x_buf != NULL ) { + freebytes(x->x_buf, BFSZ*sizeof( double ) ); + post( "Freed %d bytes", BFSZ*sizeof( double ) ); + x->x_buf = NULL; + } + if ( x->x_coeffs != NULL ) { + freebytes(x->x_coeffs, COEFFSIZE*NBCOEFFS*sizeof( t_float ) ); + post( "Freed %d bytes", COEFFSIZE*NBCOEFFS*sizeof( t_float )); + x->x_coeffs = NULL; + } +} + +static void *wahwah_new(void) +{ + t_wahwah *x = (t_wahwah *)pd_new(wahwah_class); + outlet_new(&x->x_obj, &s_signal); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("minfreq")); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("maxfreq")); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("sensibility")); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("maxstep")); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("dbgain")); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("bandwidth")); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("step")); + + x->x_samplerate = (int)sys_getsr(); + + if ( !( x->x_buf = ( double* ) getbytes( BFSZ*sizeof( double ) ) ) ) + { + post ("wahwah~ : could not allocate buffer" ); + return NULL; + } + if ( !( x->x_coeffs = ( t_float* ) getbytes( COEFFSIZE*NBCOEFFS*sizeof( t_float ) ) ) ) + { + post ("wahwah~ : could not allocate coeffs" ); + return NULL; + } + + // set default parameters + wahwah_preset( x, 1 ); + wahwah_set_coeffs( x ); + + return (x); +} + +void wahwah_tilde_setup(void) +{ + post( wahwah_version ); + wahwah_class = class_new(gensym("wahwah~"), (t_newmethod)wahwah_new, (t_method)wahwah_free, + sizeof(t_wahwah), 0, 0); + + CLASS_MAINSIGNALIN( wahwah_class, t_wahwah, x_f ); + class_sethelpsymbol( wahwah_class, gensym("help-wahwah~.pd") ); + class_addmethod(wahwah_class, (t_method)wahwah_step, gensym("step"), A_FLOAT, 0); + class_addmethod(wahwah_class, (t_method)wahwah_minfreq, gensym("minfreq"), A_FLOAT, 0); + class_addmethod(wahwah_class, (t_method)wahwah_maxfreq, gensym("maxfreq"), A_FLOAT, 0); + class_addmethod(wahwah_class, (t_method)wahwah_sensibility, gensym("sensibility"), A_FLOAT, 0); + class_addmethod(wahwah_class, (t_method)wahwah_maxstep, gensym("maxstep"), A_FLOAT, 0); + class_addmethod(wahwah_class, (t_method)wahwah_dbgain, gensym("dbgain"), A_FLOAT, 0); + class_addmethod(wahwah_class, (t_method)wahwah_bandwidth, gensym("bandwidth"), A_FLOAT, 0); + class_addmethod(wahwah_class, (t_method)wahwah_dsp, gensym("dsp"), 0); + class_addmethod(wahwah_class, (t_method)wahwah_preset, gensym("preset"), A_FLOAT, 0); +} -- cgit v1.2.1