Tone.js/examples/envelope.html

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<html>
<head>
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<title>Envelope</title>
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<meta name="viewport" content="width=device-width, initial-scale=0.5">
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<script type="text/javascript" src="../deps/jquery.min.js"></script>
<script type="text/javascript" src="../deps/jquery-ui.js"></script>
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<script type="text/javascript" src="../deps/jquery.ui.touch-punch.js"></script>
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<script type="text/javascript" src="../Tone.js"></script>
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<script type="text/javascript" src="./Widgets.js"></script>
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<script type="text/javascript" src="./ExampleList.js"></script>
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<link rel="stylesheet" type="text/css" href="./style/widgets.css">
<link rel="stylesheet" type="text/css" href="./style/jquery-ui.css">
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</head>
<body>
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<div id="Container">
<div id="Explanation">
Attack/Decay/Sustain/Release Envelope
<br>
<br>
Click the button to trigger the attack/decay portion of the envelope.
Let go of the button to trigger the release.
<br>
<br>
<a href="http://en.wikipedia.org/wiki/Synthesizer#ADSR_envelope">Read more about ADSR on Wikipedia</a>
</div>
<div id="Content"></div>
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</div>
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<script type="text/javascript">
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/* global Tone, GUI*/
var env = new Tone.Envelope(0.05, 0.01, 0.4, 0.4);
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var osc = new Tone.Oscillator(440, "square");
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//connect the envelope to the output gain
env.connect(osc.output.gain);
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//start the oscillator
osc.toMaster();
osc.start();
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// GUI //
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$(function(){
var container = $("#Content");
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new GUI.StartButton(Tone.startMobile);
new GUI.TopBar(Tone);
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//sliders for the envelope controls
new GUI.Envelope(container, env, "envelope");
new GUI.Momentary(container, function(down){
if (down){
env.triggerAttack();
} else {
env.triggerRelease();
}
}, "attack", "release");
});
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</script>
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<style type="text/css">
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#Content {
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text-align: center;
width: 180px;
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height: 200px;
}
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.Envelope {
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margin: auto;
}
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.Momentary {
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margin-top: 10px;
width: 100%;
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}
</style>
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</body>
</html>