Tone.js/examples/stepSequencer.html
2015-02-24 12:03:22 -05:00

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>SCORE</title>
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<script type="text/javascript" src="../build/Tone.js"></script>
<script type="text/javascript" src="../build/Tone.Preset.js"></script>
<script type="text/javascript" src="./deps/jquery.min.js"></script>
<script type="text/javascript" src="./deps/qwerty-hancock.js"></script>
<script type="text/javascript" src="./deps/nexusUI.js"></script>
<script type="text/javascript" src="./deps/prism.js"></script>
<script type="text/javascript" src="./scripts/Interface.js"></script>
<link rel="stylesheet" type="text/css" href="./style/examples.css">
<link rel="stylesheet" type="text/css" href="./style/prism.css">
<script type="text/javascript">
// jshint ignore: start
</script>
</head>
<body>
<style type="text/css">
</style>
<div id="Explanation">
Tone.Transport
<br>
<br>
Tone.Transport is the application-wide timekeeper. It uses an OscillatorNode
as it's clock source which enables sample-accurate scheduling as well as
tempo-curves and automation. This example uses Tone.Transport.setInterval
to invoke a callback every 16th note.
</div>
<div id="Content">
<div id="LoadingBar"></div>
<div id="Controls"></div>
<div id="Rack">
</div>
<div id="Code"></div>
</div>
<script id="ToneCode" type="text/javascript">
//setup a polyphonic sampler
var keys = new Tone.PolySynth(4, Tone.Sampler, {
"A" : "./audio/casio/A1.mp3",
"C#" : "./audio/casio/Cs2.mp3",
"E" : "./audio/casio/E2.mp3",
"F#" : "./audio/casio/Fs2.mp3",
}, {
"envelope" : {
"release" : 0.2
}
}).toMaster();
keys.volume.value = -15;
//keep track of steps and notes
var stepNumber = 0;
var noteNames = ["A", "C#", "E", "F#"];
//the repeated callback
Tone.Transport.setInterval(function(time){
//get the notes at the step
var column = matrix1.matrix[stepNumber];
for (var i = 0; i < 4; i++){
if (column[i] === 1){
keys.triggerAttackRelease(noteNames[i], "32n", time);
}
}
stepNumber++;
stepNumber = stepNumber % 16;
}, "16n");
//transport settings
Tone.Transport.loopEnd = "1m";
Tone.Transport.loop = true;
</script>
<script type="text/javascript">
Interface.Loading("LoadingBar");
Interface.Rack("Rack", "Transport");
Interface.StepSequencer("Rack", 32, 8).randomize();
Interface.Slider("Rack", Tone.Transport, "bpm", 100, 150);
Interface.Toggle("Rack", function(on){
if (on){
Tone.Transport.start();
} else {
Tone.Transport.stop();
}
});
Interface.Code("Code", "ToneCode");
</script>
</body>
</html>