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<html><head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>
Javascript Audio Processing
</title>
<script src="https://google-code-prettify.googlecode.com/svn/loader/run_prettify.js?autoload=true&skin=sunburst&lang=css" defer="defer"></script>
<!-- <link rel="stylesheet" type="text/css" href="javascript-processing_files/simple.css"> -->
<script src="../maxiLib.js"></script>
<!-- <script src="../maxi_webAudio.js"></script> -->
<!-- Our javascript code -->
<script type="text/javascript">
var audio = new maximJs.maxiAudio();
audio.init();
var sound1 = new maximJs.maxiSample();
var snarePhase = new maximJs.maxiOsc();
var timer = new maximJs.maxiOsc();
var envelope = new maximJs.maxiEnv();
var currentCount = 0,lastCount = 0,playHead = 0;
var sequence = [1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0]; //This is the sequence for the kick
var sampleTrigger = 0;
var sampleOut = 0;
audio.outputIsArray(true, 2);
audio.loadSample('audio/kick1.wav', sound1);
audio.play = function(){
if(sound1.isReady()){
currentCount=Math.floor(timer.phasor(8));//this sets up a metronome that ticks 8 times a second
if (lastCount!=currentCount) {//if we have a new timer int this sample, play the sound
sampleTrigger=sequence[playHead%16];
playHead++;//iterate the playhead
lastCount=0;//reset the metrotest
}
//the envelope we're using here is an AR envelope.
//It has an input (which in this case is a sound)
//It has an attack coefficient, a hold val (in samples)
//and a release coefficient. Finally, it has a trigger input.
//If you stick a 1 in the trigger input, it retriggers the envelope
sampleOut=envelope.ar(sound1.play(1.), 0.1, 0.9999, 1, sampleTrigger); //
this.output[0]=sampleOut;//left channel
this.output[1]=sampleOut;//right channel
sampleTrigger = 0;//set trigger to 0 at the end of each sample to guarantee retriggering.
}
}
</script>
</head>
<body>
<h1> Enveloping </h1>
<p>
this tutorial explains how to use the maxiEnv
</p>
<pre class="prettyprint lang-js linenums:true" id="quine" style="border:4px solid #88c" >
var audio = new maximJs.maxiAudio();
audio.init();
var sound1 = new maximJs.maxiSample();
var snarePhase = new maximJs.maxiOsc();
var timer = new maximJs.maxiOsc();
var envelope = new maximJs.maxiEnv();
var currentCount = 0,lastCount = 0,playHead = 0;
var sequence = [1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0]; //This is the sequence for the kick
var sampleTrigger = 0;
var sampleOut = 0;
audio.outputIsArray(true, 2);
audio.loadSample('audio/kick1.wav', sound1);
audio.play = function(){
if(sound1.isReady()){
currentCount=Math.floor(timer.phasor(8));//this sets up a metronome that ticks 8 times a second
if (lastCount!=currentCount) {//if we have a new timer int this sample, play the sound
sampleTrigger=sequence[playHead%16];
playHead++;//iterate the playhead
lastCount=0;//reset the metrotest
}
//the envelope we're using here is an AR envelope.
//It has an input (which in this case is a sound)
//It has an attack coefficient, a hold val (in samples)
//and a release coefficient. Finally, it has a trigger input.
//If you stick a 1 in the trigger input, it retriggers the envelope
sampleOut=envelope.ar(sound1.play(1.), 0.1, 0.9999, 1, sampleTrigger); //
this.output[0]=sampleOut;//left channel
this.output[1]=sampleOut;//right channel
sampleTrigger = 0;//set trigger to 0 at the end of each sample to guarantee retriggering.
}
}
</pre>
</body></html>