webchuck
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ChucK on the Web
WebChucK
WebChucK brings ChucK, a strongly-timed audio programming language, to
the web! ChucK's C++ source code has been compiled with Emscripten and
targets WebAssembly (WASM) to run via the AudioWorkletNode interface of the Web Audio API.
With near-native performance, WebChucK runs on modern desktop browsers as well as tablets and mobile
devices! Bring together ChucK's real-time sound synthesis engine and web tools to create new
experiences and develop creative workflows. Embed WebChucK into any website to build online audiovisual
experiences, immersive multi-channel audio web apps, or shareable musical instruments! To learn more
about WebChucK and what it can do, check out https://chuck.stanford.edu/webchuck/
Try out WebChucK in action through WebChucK IDE!
Getting Started
NPM
Install WebChucK via npm and use it with TypeScript:
npm install webchuck
import { Chuck } from 'webchuck'
// Create the default ChucK object
const theChuck = await Chuck.init([]);
// Run ChucK code
theChuck.runCode(`
SinOsc sin => dac;
440 => sin.freq;
1::second => now;
`);
Note that many browsers do not let audio run without a user interaction (e.g. button press). You can check for a suspended audio context and resume like this:
if (theChuck.context.state === "suspended") {
theChuck.context.resume();
}
CDN
You can also embed WebChucK as a JS module into your index.html.
<html>
<head>
<script type="module" defer>
import { Chuck } from 'https://cdn.jsdelivr.net/npm/webchuck/+esm';
document.getElementById('action').addEventListener('click', async () => {
// Initialize default ChucK object, if not already initialized
window.theChuck ??= await Chuck.init([]);
// Run ChucK code
theChuck.runCode(`
SinOsc sin => dac;
440 => sin.freq;
1::second => now;
`);
});
</script>
</head>
<body>
<button id="action">Start and Play</button>
</body>
</html>
You now have a WebChucK instance in the global variable theChuck. Read the API reference to see how to communicate between JS and ChucK e.g. removing shreds, syncing variables, monitoring the VM etc.
Documentation
WebChucK full documentation and API reference: here
For Developers
If you are a developer, check out the Developer Guide to get started.
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