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Add mic input for loudness block

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Eric Rosenbaum 2017-03-20 18:49:37 -04:00
parent 4eb12ea075
commit 7d6adf5864
1 changed files with 23 additions and 0 deletions
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23
src/index.js
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@ -53,6 +53,10 @@ function AudioEngine () {
// a map of md5s to audio buffers, holding sounds for all sprites
this.audioBuffers = {};
// microphone, for measuring loudness, with a level meter analyzer
this.mic = null;
this.micMeter = null;
}
/**
@ -143,6 +147,25 @@ AudioEngine.prototype.changeTempo = function (value) {
this.setTempo(this.currentTempo + value);
};
/**
* Get the current loudness of sound received by the microphone.
* Sound is measured in RMS and smoothed.
* @return {number} loudness scaled 0 to 100
*/
AudioEngine.prototype.getLoudness = function () {
if (!this.mic) {
this.mic = new Tone.UserMedia();
this.micMeter = new Tone.Meter('level', 0.5);
this.mic.open();
this.mic.connect(this.micMeter);
}
if (this.mic && this.mic.state == 'started') {
return this.micMeter.value * 100;
} else {
return 0;
}
};
/**
* Names of the audio effects.
* @readonly