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add effects ‘wobble’ and ‘telephone’

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This commit is contained in:
Eric Rosenbaum 2016-11-19 14:19:31 -05:00
parent 19beacc5ce
commit 1a088252e3
1 changed files with 61 additions and 24 deletions
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85
src/index.js
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@ -20,11 +20,27 @@ function AudioEngine (sounds) {
this.pitchEffectValue;
this.vocoder = new Vocoder();
this.wobble = new Tone.Effect();
var wobbleLFO = new Tone.LFO(10, 0, 1).start();
var wobbleGain = new Tone.Gain();
wobbleLFO.connect(wobbleGain.gain);
this.wobble.effectSend.chain(wobbleGain, this.wobble.effectReturn);
// telephone effect - simulating the 'tinny' sound coming over a phone line
// basically, a lowpass filter and a highpass filter
this.telephone = new Tone.Effect();
var telephoneLP = new Tone.Filter(1200, 'lowpass', -24);
var telephoneHP = new Tone.Filter(800, 'highpass', -24);
this.telephone.effectSend.chain(telephoneLP, telephoneHP, this.telephone.effectReturn);
// the effects are chained to an effects node for this clone, then to the master output
// so audio is sent from each player or instrument, through the effects in order, then out
// note that the pitch effect works differently - it sets the playback rate for each player
this.effectsNode = new Tone.Gain();
this.effectsNode.chain(this.vocoder, this.distortion, this.delay, this.panner, this.reverb, Tone.Master);
this.effectsNode.chain(
// this.vocoder,
this.distortion, this.delay, this.telephone,
this.wobble, this.panner, this.reverb, Tone.Master);
// reset effects to their default parameters
this.clearEffects();
@ -199,21 +215,27 @@ AudioEngine.prototype.stopAllSounds = function () {
AudioEngine.prototype.setEffect = function (effect, value) {
switch (effect) {
case 'ECHO':
this.delay.wet.value = (value / 100) / 2; // max 50% wet
case 'PITCH':
this._setPitchShift(value);
break;
case 'PAN':
this.panner.pan.value = value / 100;
break;
case 'ECHO':
this.delay.wet.value = (value / 100) / 2; // max 50% wet
break;
case 'REVERB':
this.reverb.wet.value = value / 100;
break;
case 'PITCH':
this._setPitchShift(value);
break;
case 'FUZZ' :
this.distortion.wet.value = value / 100;
break;
case 'TELEPHONE' :
this.telephone.wet.value = value / 100;
break;
case 'WOBBLE' :
this.wobble.wet.value = value / 100;
break;
case 'ROBOTIC' :
this.vocoder.wet.value = value / 100;
break;
@ -222,25 +244,33 @@ AudioEngine.prototype.setEffect = function (effect, value) {
AudioEngine.prototype.changeEffect = function (effect, value) {
switch (effect) {
case 'ECHO':
this.delay.wet.value += (value / 100) / 2; // max 50% wet
this.delay.wet.value = this._clamp(this.delay.wet.value, 0, 0.5);
case 'PITCH':
this._setPitchShift(this.pitchEffectValue + Number(value));
break;
case 'PAN':
this.panner.pan.value += value / 100;
this.panner.pan.value = this._clamp(this.panner.pan.value, -1, 1);
break;
case 'ECHO':
this.delay.wet.value += (value / 100) / 2; // max 50% wet
this.delay.wet.value = this._clamp(this.delay.wet.value, 0, 0.5);
break;
case 'REVERB':
this.reverb.wet.value += value / 100;
this.reverb.wet.value = this._clamp(this.reverb.wet.value, 0, 1);
break;
case 'PITCH':
this._setPitchShift(this.pitchEffectValue + Number(value));
break;
case 'FUZZ' :
this.distortion.wet.value += value / 100;
this.distortion.wet.value = this._clamp(this.distortion.wet.value, 0, 1);
break;
case 'TELEPHONE' :
this.telephone.wet.value += value / 100;
this.telephone.wet.value = this._clamp(this.telephone.wet.value, 0, 1);
break;
case 'WOBBLE' :
this.wobble.wet.value += value / 100;
this.wobble.wet.value = this._clamp(this.wobble.wet.value, 0, 1);
break;
case 'ROBOTIC' :
this.vocoder.wet.value += value / 100;
this.vocoder.wet.value = this._clamp(this.vocoder.wet.value, 0, 1);
@ -251,20 +281,25 @@ AudioEngine.prototype.changeEffect = function (effect, value) {
AudioEngine.prototype._setPitchShift = function (value) {
this.pitchEffectValue = value;
if (!this.soundPlayers) {
return;
}
var ratio = this._getPitchRatio();
for (var i=0; i<this.soundPlayers.length; i++) {
var s = this.soundPlayers[i].bufferSource;
if (s && s.playbackRate) {
s.playbackRate.value = ratio;
}
}
var freq = this._getPitchRatio() * Tone.Frequency('C3').eval();
this.vocoder.setCarrierOscFrequency(freq);
if (!this.soundPlayers) {
return;
}
var ratio = this._getPitchRatio();
this._setPlaybackRateForAllSoundPlayers(ratio);
};
AudioEngine.prototype._setPlaybackRateForAllSoundPlayers = function (rate) {
for (var i=0; i<this.soundPlayers.length; i++) {
var s = this.soundPlayers[i].bufferSource;
if (s && s.playbackRate) {
s.playbackRate.value = rate;
}
}
};
AudioEngine.prototype._getPitchRatio = function () {
@ -285,11 +320,13 @@ AudioEngine.prototype.setInstrument = function (instrumentNum) {
AudioEngine.prototype.clearEffects = function () {
this.delay.wet.value = 0;
this._setPitchShift(0);
this.panner.pan.value = 0;
this.reverb.wet.value = 0;
this.distortion.wet.value = 0;
this.vocoder.wet.value = 0;
this.wobble.wet.value = 0;
this.telephone.wet.value = 0;
this._setPitchShift(0);
this.effectsNode.gain.value = 1;
};