58 lines
1.5 KiB
Text
58 lines
1.5 KiB
Text
class:: IEnvGen
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summary:: Envelope generator for polling values from an Env
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categories:: UGens>Envelopes
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related:: Classes/Env
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description::
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Envelope generator for polling values from an envelope. IEnvGen plays back break point envelopes from the code::index:: point. The envelopes are instances of the link::Classes/Env:: class.
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classmethods::
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private:: categories, new1
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method:: ar, kr
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argument:: envelope
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an instance of Env (this is static for the life of the UGen)
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argument:: index
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a point to access within the Env
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argument:: mul
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argument:: add
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instancemethods::
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private:: init, argNamesInputsOffset, convertEnv
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examples::
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code::
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(
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{
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var env = Env([0, 0.6, 0.3, 1.0, 0], [0.1, 0.02, 0.4, 1.1], [\lin, \exp, -6, \sin]);
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var envgen = IEnvGen.kr(env, MouseX.kr(0, env.times.sum));
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env.plot;
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SinOsc.ar(envgen * 500 + 440)
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}.play;
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)
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// index with an SinOsc ... mouse controls amplitude of SinOsc
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// use offset so negative values of SinOsc will map into the Env
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(
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{
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var sin = SinOsc.ar(440, 0, MouseX.kr(0, 1));
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// use offset so negative values of SinOsc will map into the Env
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var env = Env([-1, -0.7, 0.7, 1], [ 0.8666, 0.2666, 0.8668 ], \lin, offset: -1.0);
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IEnvGen.ar(env, sin) * 0.1
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}.play;
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)
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// index with Amplitude of input, control freq of SinOsc (uses SoundIn)
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(
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{
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var point = Amplitude.ar(SoundIn.ar(0), 0.01, 0.2);
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// use offset so negative values of SinOsc will map into the Env
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var env = Env.xyc([[0, 330, \exp], [0.5, 440, \exp], [1.0, 1760]]);
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SinOsc.ar(IEnvGen.kr(env, point)) * 0.2
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}.play;
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)
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::
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