72 lines
1.2 KiB
Text
72 lines
1.2 KiB
Text
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class:: LinCongN
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summary:: Linear congruential chaotic generator
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categories:: UGens>Generators>Chaotic
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related:: Classes/LinCongL, Classes/LinCongC
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description::
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A non-interpolating sound generator based on the difference equation:
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teletype::
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x(n+1) = (a * x(n) + c) % m
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::
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The output signal is automatically scaled to a range of [-1, 1].
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sclang code translation:
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code::
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(
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var a = 1.1, c = 0.13, m = 1, xi = 0, size = 64;
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plot(size.collect { xi = (a * xi + c) % m });
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)
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::
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classmethods::
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method:: ar
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argument:: freq
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Iteration frequency in Hertz
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argument:: a
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Multiplier amount
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argument:: c
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Increment amount
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argument:: m
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Modulus amount
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argument:: xi
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Initial value of x
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argument:: mul
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argument:: add
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examples::
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code::
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// default initial params
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{ LinCongN.ar(MouseX.kr(20, SampleRate.ir)) * 0.2 }.play(s);
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::
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code::
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// randomly modulate params
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(
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{ LinCongN.ar(
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LFNoise2.kr(1, 1e4, 1e4),
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LFNoise2.kr(0.1, 0.5, 1.4),
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LFNoise2.kr(0.1, 0.1, 0.1),
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LFNoise2.kr(0.1)
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) * 0.2 }.play(s);
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)
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::
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code::
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// as frequency control...
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(
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{
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SinOsc.ar(
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LinCongN.ar(
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40,
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LFNoise2.kr(0.1, 0.1, 1),
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LFNoise2.kr(0.1, 0.1, 0.1),
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LFNoise2.kr(0.1),
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0, 500, 600
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)
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) * 0.4 }.play(s);
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)
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::
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