47 lines
914 B
Text
47 lines
914 B
Text
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class:: CuspN
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summary:: Cusp map chaotic generator
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categories:: UGens>Generators>Chaotic
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related:: Classes/CuspL
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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 - b * sqrt(|x(n)|)
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::
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sclang code translation:
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code::
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(
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var a = 1.0, b = 1.9, xi = 0, size = 64;
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plot(size.collect { xi = a - (b * sqrt(abs(xi))) });
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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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Equation variable
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argument::b
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Equation variable
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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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// vary frequency
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{ CuspN.ar(MouseX.kr(20, SampleRate.ir), 1.0, 1.99) * 0.3 }.play(s);
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// mouse-controlled params
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{ CuspN.ar(SampleRate.ir/4, MouseX.kr(0.9,1.1,1), MouseY.kr(1.8,2,1)) * 0.3 }.play(s);
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// as a frequency control
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{ SinOsc.ar(CuspN.ar(40, MouseX.kr(0.9,1.1,1), MouseY.kr(1.8,2,1))*800+900)*0.4 }.play(s);
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::
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