mirror of
https://github.com/Tonejs/Tone.js
synced 2024-11-16 16:48:00 +00:00
104 lines
3 KiB
HTML
104 lines
3 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>Signal</title>
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<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
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<link rel="icon" type="image/png" sizes="174x174" href="./favicon.png">
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<script src="https://unpkg.com/@webcomponents/webcomponentsjs@^2/webcomponents-bundle.js"></script>
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<script src="../build/Tone.js"></script>
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<script src="./js/tonejs-ui.js"></script>
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<style type="text/css">
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tone-play-toggle {
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margin-bottom: 10px;
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}
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tone-slider {
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display: block;
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width: 100%;
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}
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</style>
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</head>
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<body>
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<tone-example>
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<tone-explanation label="Control Voltage">
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One of the most powerful features of Tone.js and the Web Audio API is the ability to
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perform math and logic on audio-rate signal. Signals
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can be ramped and scheduled to control Audio Parameters and
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other Signals making it simple to create elaborate,
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interconnected automations.
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<br><br>
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This example applies a series of mappings to a
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signal value and applies the results of those mappings
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to the frequency attribute of 2
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<a href="https://tonejs.github.io/docs/Oscillator">Tone.Oscillators</a>
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and a <a href="https://tonejs.github.io/docs/LFO">Tone.LFO</a>.
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</tone-explanation>
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<tone-content>
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<tone-play-toggle></tone-play-toggle>
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<tone-slider label="Modulation Rate" min="0.1" max="1" exp="2" value="0.5"></tone-slider>
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</tone-content>
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</tone-example>
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<script type="text/javascript">//use this to pan the two oscillators hard left/right
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var merge = new Tone.Merge().toMaster();
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//two oscillators panned hard left / hard right
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var rightOsc = new Tone.Oscillator({
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"type" : "sawtooth",
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"volume" : -20
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}).connect(merge.right);
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var leftOsc = new Tone.Oscillator({
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"type" : "square",
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"volume" : -20
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}).connect(merge.left);
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//create an oscillation that goes from 0 to 1200
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//connection it to the detune of the two oscillators
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var detuneLFO = new Tone.LFO({
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"type" : "square",
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"min" : 0,
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"max" : 1200
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}).fan(rightOsc.detune, leftOsc.detune).start();
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//the frequency signal
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var frequency = new Tone.Signal(0.5);
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//the move the 0 to 1 value into frequency range
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var scale = new Tone.ScaleExp(110, 440);
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//multiply the frequency by 2.5 to get a 10th above
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var mult = new Tone.Multiply(2.5);
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//chain the components together
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frequency.chain(scale, mult);
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scale.connect(rightOsc.frequency);
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mult.connect(leftOsc.frequency);
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//multiply the frequency by 2 to get the octave above
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var detuneScale = new Tone.Scale(14, 4);
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frequency.chain(detuneScale, detuneLFO.frequency);
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//start the oscillators with the play button
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document.querySelector("tone-play-toggle").addEventListener("change", e => {
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if (e.detail){
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rightOsc.start();
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leftOsc.start();
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} else {
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rightOsc.stop();
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leftOsc.stop();
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}
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});
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//ramp the frequency with the slider
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document.querySelector("tone-slider").addEventListener("change", e => {
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frequency.rampTo(e.detail, 0.1);
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});
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</script>
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</body>
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</html>
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