interpretor/faust-0.9.47mr3/tools/faust2pd/examples/seqdemo/chorus.dsp

   1
   2 /* A simple chorus effect. */
   3
   4 declare name "chorus -- a simple chorus effect";
   5 declare author "Albert Graef";
   6 declare version "1.0";
   7
   8 import("music.lib");
   9
  10 level   = hslider("level", 0.5, 0, 1, 0.01);
  11 freq    = hslider("freq", 2, 0, 10, 0.01);
  12 dtime   = hslider("delay", 0.025, 0, 0.2, 0.001);
  13 depth   = hslider("depth", 0.02, 0, 1, 0.001);
  14
  15 tblosc(n,f,freq,mod)    = (1-d)*rdtable(n,waveform,i&(n-1)) +
  16                           d*rdtable(n,waveform,(i+1)&(n-1))
  17 with {
  18         waveform        = time*(2.0*PI)/n : f;
  19         phase           = freq/SR : (+ : decimal) ~ _;
  20         modphase        = decimal(phase+mod/(2*PI))*n;
  21         i               = int(floor(modphase));
  22         d               = decimal(modphase);
  23 };
  24
  25 chorus(d,freq,depth)    = fdelay(1<<16, t)
  26 with {  t               = SR*d/2*(1+depth*tblosc(1<<16, sin, freq, 0)); };
  27
  28 process                 = vgroup("chorus", (c, c))
  29 with { c(x) = x+level*chorus(dtime,freq,depth,x); };