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