HelpSource/Classes/PV_Mul.schelp

   1 class:: PV_Mul
   2 summary:: Complex multiply.
   3 related:: Classes/FFT, Classes/IFFT, Classes/PV_Add, Classes/PV_CopyPhase, Classes/PV_MagMul, Classes/PV_Max, Classes/PV_Min
   4 categories:: UGens>FFT
   5
   6 Description::
   7
   8 Complex Multiplication:
   9
  10 formula::
  11
  12 (RealA * RealB) - (ImagA * ImagB),
  13 (ImagA * RealB) + (RealA * ImagB)
  14
  15 ::
  16
  17
  18 classmethods::
  19
  20 method::new
  21
  22 argument::bufferA
  23 FFT buffer A.
  24
  25 argument::bufferB
  26 FFT buffer B.
  27
  28 Examples::
  29
  30 code::
  31
  32 s = Server.internal.boot;
  33
  34 (
  35 SynthDef("help-mul", { arg out=0;
  36         var inA, chainA, inB, chainB, chain ;
  37         inA = SinOsc.ar(500, 0, 0.5);
  38         inB =  SinOsc.ar(Line.kr(100, 400, 5), 0, 0.5);
  39         chainA = FFT(LocalBuf(2048), inA);
  40         chainB = FFT(LocalBuf(2048), inB);
  41         chain = PV_Mul(chainA, chainB);
  42         Out.ar(out,  0.1 * IFFT(chain).dup);
  43 }).play(s);
  44 s.scope;
  45 )
  46
  47 (
  48 SynthDef("help-mul2", { arg out=0;
  49         var inA, chainA, inB, chainB, chain ;
  50         inA = SinOsc.ar(500, 0, 0.5) * Line.kr;
  51         inB = LFNoise1.ar(20);
  52         chainA = FFT(LocalBuf(2048), inA);
  53         chainB = FFT(LocalBuf(2048), inB);
  54         chain = PV_Mul(chainA, chainB);
  55         Out.ar(out,  0.1 * IFFT(chain).dup);
  56 }).play(s);
  57 s.scope;
  58 )
  59
  60 ::
  61