77 lines
1.2 KiB
Text
77 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{Decay2}
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Exponential decay@section{related}
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Classes/Decay
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@section{categories}
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UGens>Filters>Linear, UGens>Envelopes
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@section{description}
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link::Classes/Decay:: has a very sharp attack and can produce clicks.
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Decay2 rounds off the attack by subtracting one Decay from another.
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@racketblock[ Decay2.ar(in, attackTime, decayTime):: is equivalent to:
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]
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@racketblock[
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Decay.ar(in, decayTime) - Decay.ar(in, attackTime)
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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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attackTime
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60 dB attack time in seconds.
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@section{argument}
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decayTime
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60 dB decay time in seconds.
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@section{argument}
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mul
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@section{argument}
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add
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@section{Examples}
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@racketblock[
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// since attack and decay are a difference of two Decays,
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// swapping the values, the envelope turns upside down:
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plot({ Decay2.ar(Impulse.ar(1), 0.001, 0.01) })
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plot({ Decay2.ar(Impulse.ar(1), 0.01, 0.001) })
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// used as an envelope
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{ Decay2.ar(Impulse.ar(XLine.kr(1,50,20), 0.25), 0.01, 0.2, FSinOsc.ar(600)) }.play;
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// compare the above with Decay used as the envelope
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{ Decay.ar(Impulse.ar(XLine.kr(1,50,20), 0.25), 0.2, FSinOsc.ar(600), 0) }.play;
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::
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]
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