70 lines
1.3 KiB
Text
70 lines
1.3 KiB
Text
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#lang scribble/manual
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@(require (for-label racket))
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@title{SinOscFB}
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Feedback FM oscillator@section{related}
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Classes/SinOsc, Classes/FSinOsc, Classes/PMOsc
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@section{categories}
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UGens>Generators>Deterministic, UGens>Generators>Chaotic
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@section{description}
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SinOscFB is a sine oscillator that has phase modulation feedback; its output plugs back into the phase input.
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Basically this allows a modulation between a sine wave and a sawtooth like wave. Overmodulation causes chaotic oscillation. It may be useful if you want to simulate feedback FM synths.
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@section{classmethods}
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@section{method}
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ar, kr
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@section{argument}
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freq
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The base frequency of the sine oscillator in Hertz.
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@section{argument}
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feedback
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The second argument is the amplitude of phase feedback in radians.
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@section{argument}
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mul
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Output will be multiplied by this value.
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@section{argument}
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add
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This value will be added to the output after any multiplication.
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@section{Examples}
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@racketblock[
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{SinOscFB.ar(440,MouseX.kr(0,4))*0.1}.play
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{SinOscFB.ar(MouseY.kr(10,1000,'exponential'),MouseX.kr(0.5pi,pi))*0.1}.play
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{SinOscFB.ar(100*SinOscFB.ar(MouseY.kr(1,1000,'exponential'))+200,MouseX.kr(0.5pi,pi))*0.1}.play
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// Scope the wave form
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{ SinOscFB.ar([400,301], MouseX.kr(0,4),0.3); }.scope;
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::
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]
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