mirror of
https://github.com/Tonejs/Tone.js
synced 2024-11-16 16:48:00 +00:00
66 lines
1.6 KiB
JavaScript
66 lines
1.6 KiB
JavaScript
define(["Tone/core/Tone", "Tone/effect/Effect", "Tone/signal/Signal", "Tone/signal/Multiply"], function(Tone){
|
|
|
|
"use strict";
|
|
|
|
/**
|
|
* @class Tone.FeedbackEffect provides a loop between an
|
|
* audio source and its own output. This is a base-class
|
|
* for feedback effects.
|
|
*
|
|
* @constructor
|
|
* @extends {Tone.Effect}
|
|
* @param {NormalRange|Object} [feedback] The initial feedback value.
|
|
*/
|
|
Tone.FeedbackEffect = function(){
|
|
|
|
var options = this.optionsObject(arguments, ["feedback"]);
|
|
options = this.defaultArg(options, Tone.FeedbackEffect.defaults);
|
|
|
|
Tone.Effect.call(this, options);
|
|
|
|
/**
|
|
* The amount of signal which is fed back into the effect input.
|
|
* @type {NormalRange}
|
|
* @signal
|
|
*/
|
|
this.feedback = new Tone.Signal(options.feedback, Tone.Type.NormalRange);
|
|
|
|
/**
|
|
* the gain which controls the feedback
|
|
* @type {GainNode}
|
|
* @private
|
|
*/
|
|
this._feedbackGain = this.context.createGain();
|
|
|
|
//the feedback loop
|
|
this.effectReturn.chain(this._feedbackGain, this.effectSend);
|
|
this.feedback.connect(this._feedbackGain.gain);
|
|
this._readOnly(["feedback"]);
|
|
};
|
|
|
|
Tone.extend(Tone.FeedbackEffect, Tone.Effect);
|
|
|
|
/**
|
|
* @static
|
|
* @type {Object}
|
|
*/
|
|
Tone.FeedbackEffect.defaults = {
|
|
"feedback" : 0.125
|
|
};
|
|
|
|
/**
|
|
* Clean up.
|
|
* @returns {Tone.FeedbackEffect} this
|
|
*/
|
|
Tone.FeedbackEffect.prototype.dispose = function(){
|
|
Tone.Effect.prototype.dispose.call(this);
|
|
this._writable(["feedback"]);
|
|
this.feedback.dispose();
|
|
this.feedback = null;
|
|
this._feedbackGain.disconnect();
|
|
this._feedbackGain = null;
|
|
return this;
|
|
};
|
|
|
|
return Tone.FeedbackEffect;
|
|
});
|