80 lines
1.6 KiB
Text
80 lines
1.6 KiB
Text
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#lang scribble/manual
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@(require (for-label racket))
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@title{DelayC}
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Simple delay line with cubic interpolation.@section{related}
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Classes/DelayL, Classes/DelayN, Classes/BufDelayC
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@section{categories}
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UGens>Delays
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@section{description}
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Simple delay line with cubic interpolation. See also
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link::Classes/DelayN:: which uses no interpolation, and
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link::Classes/DelayL:: which uses linear interpolation. Cubic
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interpolation is more computationally expensive than linear,
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but more accurate.
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The term "delay" is often used in electronic music to refer to a delay line with feedback. If you are looking for that, try CombC.
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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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maxdelaytime
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The maximum delay time in seconds. used to initialize the delay buffer size.
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@section{argument}
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delaytime
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Delay time in seconds.
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@section{discussion}
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@section{note}
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DelayC needs at least 4 samples buffer. Therefore the minimum
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@racketblock[maxdelaytime:: and ]
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@racketblock[delaytime:: must be ]
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@racketblock[SampleDur.ir * 4::.
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::
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]
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@section{Examples}
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@racketblock[
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(
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// Dust randomly triggers Decay to create an exponential
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// decay envelope for the WhiteNoise input source
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{
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z = Decay.ar(Dust.ar(1,0.5), 0.3, WhiteNoise.ar);
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DelayC.ar(z, 0.2, 0.2, 1, z); // input is mixed with delay via the add input
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}.play
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)
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(
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// recursive application of delay.
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{
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z = Decay2.ar(Dust.ar(1, 0.5), 0.01, 0.1, Saw.ar(100 + [0, 1]));
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5.do { |i| z = DelayC.ar(RLPF.ar(z, Rand(100, 3000), 0.03), 1, 1 / (2**i), 1, z * 0.5) };
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z
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}.play
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)
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::
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]
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