HelpSource/Classes/PV_Diffuser.schelp

   1 class:: PV_Diffuser
   2 summary:: Random phase shifting.
   3 related:: Classes/FFT, Classes/IFFT, Classes/PV_PhaseShift, Classes/PV_PhaseShift90, Classes/PV_PhaseShift270
   4 categories:: UGens>FFT
   5
   6 Description::
   7
   8 Adds a different constant random phase shift to each bin. The trigger
   9 will select a new set of random phases.
  10
  11
  12 classmethods::
  13
  14 method::new
  15
  16 argument::buffer
  17
  18 FFT buffer.
  19
  20
  21 argument::trig
  22
  23 A trigger, that selects a new set of random values.
  24
  25
  26 Examples::
  27
  28 code::
  29
  30 s.boot;
  31 (
  32 b = Buffer.alloc(s,2048,1);
  33 c = Buffer.read(s, Help.dir +/+ "sounds/a11wlk01.wav");
  34 )
  35
  36 (
  37 //trig with MouseY
  38 SynthDef("help-diffuser", { arg out=0, bufnum=0 ;
  39         var in, chain;
  40         in = Mix.ar(SinOsc.ar(200 * (1..10), 0, Array.fill(10, {rrand(0.1, 0.2)}) ));
  41         chain = FFT(bufnum, in);
  42         chain = PV_Diffuser(chain, MouseY.kr > 0.5 );
  43         Out.ar(out, 0.5 * IFFT(chain).dup);
  44 }).play(s,[\out, 0, \bufnum, b.bufnum ]);
  45 )
  46
  47 (
  48 //trig with MouseY
  49 SynthDef("help-diffuser2", { arg out=0, bufnum=0, soundBufnum=2;
  50         var in, chain;
  51         in = PlayBuf.ar(1, soundBufnum, BufRateScale.kr(soundBufnum), loop: 1);
  52         chain = FFT(bufnum, in);
  53         chain = PV_Diffuser(chain, MouseY.kr > 0.5 );
  54         Out.ar(out, 0.5 * IFFT(chain).dup);
  55 }).play(s,[\out, 0, \bufnum, b.bufnum, \soundBufnum, c.bufnum]);
  56 )
  57
  58 ::
  59