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Tone.Limiter is a compressor with limiter settings

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This commit is contained in:
Yotam Mann 2014-11-29 21:47:28 -05:00
parent 09f4b5fdf8
commit 574c75f7c6
2 changed files with 78 additions and 3 deletions
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47
Tone/component/Limiter.js Normal file
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@ -0,0 +1,47 @@
define(["Tone/core/Tone", "Tone/component/Compressor"], function(Tone){
"use strict";
/**
* @class A limiter on the incoming signal. Composed of a Tone.Compressor
* with a fast attack and decay value.
*
* @extends {Tone}
* @constructor
* @param {number} threshold the threshold in decibels
*/
Tone.Limiter = function(threshold){
/**
* the compressor
* @private
* @type {Tone.Compressor}
*/
this._compressor = this.input = this.output = new Tone.Compressor({
"attack" : 0.001,
"decay" : 0.001,
"threshold" : threshold
});
};
Tone.extend(Tone.Limiter);
/**
* set the threshold value
* @param {number} value the threshold in decibels
*/
Tone.Limiter.prototype.setThreshold = function(value) {
this._compressor.setThreshold(value);
};
/**
* clean up
*/
Tone.Limiter.prototype.dispose = function(){
Tone.prototype.dispose.call(this);
this._compressor.dispose();
this._compressor = null;
};
return Tone.Limiter;
});

34
test/tests/Components.js
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@ -1,4 +1,4 @@
/* global it, describe, maxTimeout, after*/
/* global it, describe, maxTimeout*/
define(["tests/Core", "chai", "Tone/component/DryWet", "Tone/core/Master", "Tone/signal/Signal",
"Tone/component/Recorder", "Tone/component/Panner", "Tone/component/LFO", "Tone/component/Gate",
@ -6,10 +6,10 @@ define(["tests/Core", "chai", "Tone/component/DryWet", "Tone/core/Master", "Tone
"Tone/component/Merge", "Tone/component/Split", "tests/Common", "Tone/component/AmplitudeEnvelope",
"Tone/component/LowpassCombFilter", "Tone/component/FeedbackCombFilter", "Tone/component/Mono",
"Tone/component/MultibandSplit", "Tone/component/Compressor", "Tone/component/PanVol",
"Tone/component/MultibandCompressor", "Tone/component/ScaledEnvelope"],
"Tone/component/MultibandCompressor", "Tone/component/ScaledEnvelope", "Tone/component/Limiter"],
function(coreTest, chai, DryWet, Master, Signal, Recorder, Panner, LFO, Gate, Follower, Envelope,
Filter, EQ, Merge, Split, Test, AmplitudeEnvelope, LowpassCombFilter, FeedbackCombFilter,
Mono, MultibandSplit, Compressor, PanVol, MultibandCompressor, ScaledEnvelope){
Mono, MultibandSplit, Compressor, PanVol, MultibandCompressor, ScaledEnvelope, Limiter){
var expect = chai.expect;
Master.mute();
@ -851,6 +851,34 @@ function(coreTest, chai, DryWet, Master, Signal, Recorder, Panner, LFO, Gate, Fo
done();
});
});
});
describe("Tone.Limiter", function(){
this.timeout(maxTimeout);
it("can be created and disposed", function(){
var lim = new Limiter();
lim.dispose();
Test.wasDisposed(lim);
});
it("handles input and output connections", function(){
Test.onlineContext();
var lim = new Limiter();
Test.acceptsInputAndOutput(lim);
lim.dispose();
});
it("passes the incoming signal through", function(done){
var lim;
Test.passesAudio(function(input, output){
lim = new Limiter();
input.connect(lim);
lim.connect(output);
}, function(){
lim.dispose();
done();
});
});
});
});