mirror of
https://github.com/Tonejs/Tone.js
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89 lines
No EOL
2.2 KiB
JavaScript
89 lines
No EOL
2.2 KiB
JavaScript
define(["Tone/core/Tone", "Tone/effect/FeedbackDelay", "Tone/signal/Split", "Tone/signal/Merge"], function(Tone){
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/**
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* PingPongDelay is a dual delay effect where the echo is heard first in one channel and next in the opposite channel
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*
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* @constructor
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* @extends {Tone.Effect}
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* @param {Tone.Time=} delayTime is the interval between consecutive echos
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*/
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Tone.PingPongDelay = function(delayTime){
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Tone.call(this);
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/**
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* merge the delayed signal
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*/
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this._merger = new Tone.Merge();
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/**
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* each channel (left/right) gets a feedback delay
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* @type {Tone.FeedbackDelay}
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*/
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this.leftDelay = new Tone.FeedbackDelay(delayTime);
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/**
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* @type {Tone.FeedbackDelay}
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*/
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this.rightDelay = new Tone.FeedbackDelay(delayTime);
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//connect it up
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this.input.connect(this.leftDelay);
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this.input.connect(this.rightDelay);
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//disconnect the feedback lines to connect them to the other delay
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// http://jvzaudio.files.wordpress.com/2011/04/delay-f43.gif
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this.leftDelay._feedbackGain.disconnect();
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this.rightDelay._feedbackGain.disconnect();
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this.leftDelay._feedbackGain.connect(this.rightDelay.effectSend);
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this.rightDelay._feedbackGain.connect(this.leftDelay.effectSend);
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this.leftDelay.connect(this._merger.left);
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this.rightDelay.connect(this._merger.right);
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this._merger.connect(this.output);
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//initial vals;
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this.setDelayTime(this.defaultArg(delayTime, 0.25));
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};
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Tone.extend(Tone.PingPongDelay);
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/**
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* setDelayTime
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*
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* @param {Tone.Time} delayTime
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*/
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Tone.PingPongDelay.prototype.setDelayTime = function(delayTime){
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this.leftDelay.setDelayTime(delayTime);
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this.rightDelay.setDelayTime(delayTime * 2);
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};
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/**
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* setFeedback
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*
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* @param {number} feedback (0 - 1)
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*/
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Tone.PingPongDelay.prototype.setFeedback = function(feedback){
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this.leftDelay.setFeedback(feedback);
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this.rightDelay.setFeedback(feedback);
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};
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/**
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* setWet
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*
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* @param {number} wet (0 - 1)
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*/
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Tone.PingPongDelay.prototype.setWet = function(wet){
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this.leftDelay.setWet(wet);
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this.rightDelay.setWet(wet);
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};
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/**
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* setDry
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*
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* @param {number} dry (0 - 1)
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*/
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Tone.PingPongDelay.prototype.setDry = function(dry){
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this.leftDelay.setDry(dry);
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this.rightDelay.setDry(dry);
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};
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return Tone.PingPongDelay;
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}); |