94 lines
1.3 KiB
Racket
94 lines
1.3 KiB
Racket
#lang scribble/manual
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@(require (for-label racket))
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@title{Ramp}
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Break a continuous signal into line segments@section{related}
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Classes/Lag, Classes/VarLag, Classes/Slew
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@section{categories}
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UGens>Filters>Linear
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@section{description}
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Break a continuous signal into linearly interpolated segments with specific durations.
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Feeding Ramp with noise is similar to link::Classes/LFNoise1::
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@racketblock[
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Ramp.kr(WhiteNoise.kr(1),0.5)
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::
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is equal to:
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]
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@racketblock[
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LFNoise1.kr(1 / 0.5)
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::
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For smoothing out control signals, take a look at link::Classes/Lag:: and link::Classes/VarLag::
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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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lagTime
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segment duration in seconds.
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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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s.boot;
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(
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// used to lag pitch
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{
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SinOsc.ar( // sine wave
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Ramp.kr( // lag the modulator
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LFPulse.kr(4, 0, 0.5, 50, 400), // frequency modulator
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Line.kr(0, 1, 15) // modulate lag time
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),
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0, // phase
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0.3 // sine amplitude
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)
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}.scope;
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)
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// Compare
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(
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var pulse;
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{
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pulse = LFPulse.kr(8.772);
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Out.kr(0,[Ramp.kr(pulse, 0.025), Lag.kr(pulse, 0.025), pulse]);
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}.play;
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s.scope(3, bufsize: 44100, rate: \control, zoom: 40);
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)
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::
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]
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