構建基于瀏覽器的合成器JavaScript工具包：Beep.js

 
Beep是一個 JavaScript 框架用于構建基于瀏覽器的合成器，使用了WebAudio API。

var trigger = new BEEP.Trigger( '2Eb', function(){


//  Let’s call this our “Foundation Voice”
//  because it will sing the intended Note.

this.voices.push( 

    new BEEP.Voice( this.note, this.audioContext )
    .setOscillatorType( 'sine' )
    .setGainHigh( 0.4 )
)


//  This Voice will sing a Perfect 5th above the Foundation Voice.

this.voices.push( 

    new BEEP.Voice( this.note.hertz * 3 / 2, this.audioContext )
    .setOscillatorType( 'triangle' )
    .setGainHigh( 0.1 )
)


//  This Voice will sing 2 octaves above the Foundation Voice.

this.voices.push( 

    new BEEP.Voice( this.note.hertz * 4, this.audioContext )
    .setOscillatorType( 'sawtooth' )
    .setGainHigh( 0.01 )
)


//  This Voice will sing 1 octave below the Foundation Voice.

this.voices.push( 

    new BEEP.Voice( this.note.hertz / 2, this.audioContext )
    .setOscillatorType( 'square' )
    .setGainHigh( 0.01 )
)

})</pre>

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