HelpSource/Classes/LinCongN.schelp

   1 class:: LinCongN
   2 summary:: Linear congruential chaotic generator
   3 categories:: UGens>Generators>Chaotic
   4 related:: Classes/LinCongL, Classes/LinCongC
   5
   6 description::
   7 A non-interpolating sound generator based on the difference equation:
   8
   9 code::
  10         x[n+1] = (a * x[n] + c) % m
  11 ::
  12 warning:: revise formulae converted to c like code ::
  13
  14 The output signal is automatically scaled to a range of [-1, 1].
  15
  16 classmethods::
  17 method:: ar
  18 argument:: freq
  19 Iteration frequency in Hertz
  20 argument:: a
  21 Multiplier amount
  22 argument:: c
  23 Increment amount
  24 argument:: m
  25 Modulus amount
  26 argument:: xi
  27 Initial value of x
  28
  29 examples::
  30 code::
  31 // default initial params
  32 { LinCongN.ar(MouseX.kr(20, SampleRate.ir)) * 0.2 }.play(s);
  33 ::
  34
  35 code::
  36 // randomly modulate params
  37 (
  38 { LinCongN.ar(
  39         LFNoise2.kr(1, 1e4, 1e4),
  40         LFNoise2.kr(0.1, 0.5, 1.4),
  41         LFNoise2.kr(0.1, 0.1, 0.1),
  42         LFNoise2.kr(0.1)
  43 ) * 0.2 }.play(s);
  44 )
  45 ::
  46
  47 code::
  48 // as frequency control...
  49 (
  50 {
  51 SinOsc.ar(
  52         LinCongN.ar(
  53                 40,
  54                 LFNoise2.kr(0.1, 0.1, 1),
  55                 LFNoise2.kr(0.1, 0.1, 0.1),
  56                 LFNoise2.kr(0.1),
  57                 0, 500, 600
  58         )
  59 ) * 0.4 }.play(s);
  60 )
  61 ::