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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html><head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>
Javascript Audio Processing
</title>
<!-- <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 myCounter = new maximJs.maxiOsc(); //these oscillators will help us count and play sound
var mySwitchableOsc = new maximJs.maxiOsc();//
var CurrentCount;//
var myOscOutput,myCurrentVolume;//
// var myEnvelopeData = new VectorDouble();//this data will be used to make an envelope. Value and time to value in ms.
var myEnvelope = new maximJs.maxiEnvelope();
// unfortunately, '.get(n)' must be used to access vector data
// or the data can be used as an array and the GetArray... function used when required
var myEnvelopeData = GetArrayAsVectorDbl([1,0,0,500]);//this data will be used to make an envelope. Value and time to value in ms.
function setup(){
myEnvelope.amplitude=myEnvelopeData.get(0); //initialise the envelope
}
function play(){
// pass vector to myEnvelope.line
myCurrentVolume = myEnvelope.line(myEnvelopeData.size(), myEnvelopeData);
CurrentCount = Math.floor(myCounter.phasor(1, 1, 9));//phasor can take three arguments; frequency, start value and end value
if (CurrentCount<5){//simple if statement
myOscOutput=mySwitchableOsc.square(CurrentCount*100);
}
else if (CurrentCount>=5){//and the 'else' bit.
myOscOutput=mySwitchableOsc.sinewave(CurrentCount*50);//one osc object can produce whichever waveform you want.
}
if (CurrentCount === 1) {
myEnvelope.trigger(0,myEnvelopeData.get(0)); //trigger the envelope
}
output=myOscOutput*myCurrentVolume;//point me at your speakers and fire.
}
</script>
</head>
<body>
<h1> Envelope Example </h1>
<p>
</p>
</body></html>