2024-05-15 19:24:20 +00:00
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<!doctype html>
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2015-06-08 14:41:45 +00:00
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<html>
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2024-05-15 19:24:20 +00:00
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<head>
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<meta charset="utf-8" />
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<title>Signal</title>
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2015-06-08 14:41:45 +00:00
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2024-05-15 19:24:20 +00:00
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<meta
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name="viewport"
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content="width=device-width, initial-scale=1, maximum-scale=1"
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/>
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<link
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rel="icon"
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type="image/png"
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sizes="174x174"
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href="./favicon.png"
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/>
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2015-06-08 14:41:45 +00:00
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2024-05-15 19:24:20 +00:00
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<script src="https://cdnjs.cloudflare.com/ajax/libs/webcomponentsjs/2.4.3/webcomponents-bundle.js"></script>
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<link
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href="https://fonts.googleapis.com/css?family=Material+Icons&display=block"
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rel="stylesheet"
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/>
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<script src="../build/Tone.js"></script>
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<script src="./js/tone-ui.js"></script>
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<script src="./js/components.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 label="Control Voltage">
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<div slot="explanation">
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One of the most powerful features of Tone.js and the Web Audio
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API is the ability to perform math and logic on audio-rate
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signal. Signals can be ramped and scheduled to control Audio
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Parameters and other Signals making it simple to create
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elaborate, interconnected automations.
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<br /><br />
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This example applies a series of mappings to a signal value and
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applies the results of those mappings to the frequency attribute
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of 2
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<a
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href="https://tonejs.github.io/docs/latest/classes/Oscillator"
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>Tone.Oscillators</a
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>
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and a
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<a href="https://tonejs.github.io/docs/latest/classes/LFO"
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>Tone.LFO</a
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>.
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</div>
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2015-06-26 05:23:05 +00:00
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<div id="content">
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<tone-play-toggle></tone-play-toggle>
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<tone-slider
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label="Modulation Rate"
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min="0.1"
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max="1"
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exp="2"
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value="0.5"
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></tone-slider>
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</div>
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</tone-example>
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2015-06-26 05:23:05 +00:00
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2024-05-15 19:24:20 +00:00
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<script type="text/javascript">
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// use this to pan the two oscillators hard left/right
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const merge = new Tone.Merge().toDestination();
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2015-06-08 14:41:45 +00:00
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2024-05-15 19:24:20 +00:00
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// two oscillators panned hard left / hard right
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const rightOsc = new Tone.Oscillator({
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type: "sawtooth",
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volume: -20,
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}).connect(merge, 0, 0);
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2015-06-08 14:41:45 +00:00
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const leftOsc = new Tone.Oscillator({
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type: "square",
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volume: -20,
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}).connect(merge, 0, 1);
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2015-06-26 05:23:05 +00:00
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2024-05-15 19:24:20 +00:00
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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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const 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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})
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.fan(rightOsc.detune, leftOsc.detune)
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.start();
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2015-06-26 05:23:05 +00:00
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2024-05-15 19:24:20 +00:00
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// the frequency signal
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const frequency = new Tone.Signal(0.5);
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2015-06-26 05:23:05 +00:00
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2024-05-15 19:24:20 +00:00
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// the move the 0 to 1 value into frequency range
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const scale = new Tone.ScaleExp(110, 440);
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2015-06-26 05:23:05 +00:00
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2024-05-15 19:24:20 +00:00
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// multiply the frequency by 2.5 to get a 10th above
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const mult = new Tone.Multiply(2.5);
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2017-03-26 20:39:19 +00:00
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2024-05-15 19:24:20 +00:00
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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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2019-01-09 01:21:29 +00:00
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2024-05-15 19:24:20 +00:00
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// multiply the frequency by 2 to get the octave above
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const detuneScale = new Tone.Scale(14, 4);
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frequency.chain(detuneScale, detuneLFO.frequency);
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2017-03-26 20:39:19 +00:00
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2024-05-15 19:24:20 +00:00
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// start the oscillators with the play button
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document
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.querySelector("tone-play-toggle")
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.addEventListener("start", () => {
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rightOsc.start();
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leftOsc.start();
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});
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document
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.querySelector("tone-play-toggle")
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.addEventListener("stop", () => {
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rightOsc.stop();
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leftOsc.stop();
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});
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// ramp the frequency with the slider
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document
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.querySelector("tone-slider")
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.addEventListener("input", (e) => {
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frequency.rampTo(parseFloat(e.target.value), 0.1);
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});
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</script>
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</body>
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2017-03-18 16:35:37 +00:00
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</html>
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