66 lines
1.2 KiB
Text
66 lines
1.2 KiB
Text
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#lang scribble/manual
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@(require (for-label racket))
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@title{FSinOsc}
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Fast sine oscillator.@section{related}
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Classes/SinOsc, Classes/SinOscFB
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@section{categories}
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UGens>Generators>Deterministic
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@section{description}
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Very fast sine wave generator (2 PowerPC instructions per output sample!)
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implemented using a ringing filter. This generates a much cleaner sine
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wave than a table lookup oscillator and is a lot faster. However, the
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amplitude of the wave will vary with frequency. Generally the amplitude
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will go down as you raise the frequency and go up as you lower the frequency.
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@section{warning}
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In the current implementation, the amplitude can blow up if the
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frequency is modulated by certain alternating signals.
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::
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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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Frequency in Hertz.
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@section{argument}
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iphase
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Initial phase offset.
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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.
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@section{Examples}
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@racketblock[
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{ FSinOsc.ar(800) * 0.2 }.play;
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{ FSinOsc.ar(XLine.kr(200, 4000, 1)) * 0.2 }.play;
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// loses amplitude towards the end
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{ FSinOsc.ar(FSinOsc.ar(XLine.kr(4, 401, 8), 0.0, 200, 800)) * 0.2 }.play;
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::
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]
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