HelpSource/Classes/GbmanN.schelp

   1 class:: GbmanN
   2 summary:: Gingerbreadman map chaotic generator
   3 categories:: UGens>Generators>Chaotic
   4 related:: Classes/GbmanL
   5
   6 description::
   7 A non-interpolating sound generator based on the difference equations:
   8
   9 code::
  10         x[n+1] = 1 - y[n] + abs(x[n])
  11         y[n+1] = x[n]
  12 ::
  13 warning:: reviser formulae converted to c like code ::
  14
  15 The behavior of the system is only dependent on its initial conditions.
  16
  17 Reference: emphasis:: Devaney, R. L. "The Gingerbreadman." Algorithm 3, 15-16, Jan. 1992. ::
  18
  19 classmethods::
  20 method:: ar
  21 argument:: freq
  22 Iteration frequency in Hertz
  23 argument:: xi
  24 Initial value of x
  25 argument:: yi
  26 Initial value of y
  27
  28 examples::
  29 code::
  30 // default initial params
  31 { GbmanN.ar(MouseX.kr(20, SampleRate.ir)) * 0.1 }.play(s);
  32
  33 // change initial params
  34 { GbmanN.ar(MouseX.kr(20, SampleRate.ir), -0.7, -2.7) * 0.1 }.play(s);
  35
  36 // wait for it...
  37 { GbmanN.ar(MouseX.kr(20, SampleRate.ir), 1.2, 2.0002) * 0.1 }.play(s);
  38
  39 // as a frequency control
  40 { SinOsc.ar(GbmanN.ar(40)*400+500)*0.4 }.play(s);
  41 ::