90 lines
1 KiB
Text
90 lines
1 KiB
Text
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#lang scribble/manual
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@(require (for-label racket))
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@title{OneZero}
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One zero filter.@section{related}
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Classes/OnePole
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@section{categories}
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UGens>Filters>Linear
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@section{description}
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A one zero filter. Implements the formula:
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@racketblock[
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out(i) = ((1 - abs(coef)) * in(i)) + (coef * in(i-1)).
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::
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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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in
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The input signal.
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@section{argument}
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coef
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Feed forward coefficient.
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+0.5 makes a two point averaging filter
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(see also
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link::Classes/LPZ1:: ).
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-0.5 makes a differentiator
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(see also
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link::Classes/HPZ1:: ).
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+1 makes a single sample delay
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(see also
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link::Classes/Delay1:: ).
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-1 makes an inverted single sample delay.
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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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{ OneZero.ar(WhiteNoise.ar(0.5), 0.5) }.play
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{ OneZero.ar(WhiteNoise.ar(0.5), -0.5) }.play
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{ OneZero.ar(WhiteNoise.ar(0.5), Line.kr(-0.5, 0.5, 10)) }.play
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::
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]
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