Csound-wasm is dependent on the module Speaker. This module is not compatable with all audio modules, and can be buggy on Windows if installed within a unix-shell. MacOsX and Linux should work fine with CoreAudio and Alsa respectively.

Quick start

const csound = require('csound-wasm');

const beeper = `
instr 1
  asig = poscil:a(0.3, 440)
  outc asig, asig
endin`

const makeBeep = `i 1 0 1`

csound.startRealtime()
csound.compileOrc(beeper);
csound.readScore(makeBeep);

setTimeout(() => process.exit(), 5000);

Browser

Download the latest csound-wasm-browser.js under releases and bundle it next to your html file.

<script src="csound-wasm-browser.js"></script>

Or alternatively (preferably for development) refer directly to the gihub releases within the html, like so.

<script src="https://github.com/hlolli/csound-wasm/releases/download/6.10.0-4/csound-wasm-browser.js"></script>

This file is minified via Google Closure Compiler and is intended to be used as is. If you're useing Webpack or Gulp, then add this file as a vendor resource.

Quick start

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
  </head>
  <body>
    <h5>Click Start realtime once, gotta love chrome's new autoplay ban policy</h5>
    <button id="start">Start realtime</button>
    <button onclick="csound.inputMessage('i 1 0 1')">Make beep!</h1>
    <script src="https://github.com/hlolli/csound-wasm/releases/download/6.10.0-4/csound-wasm-browser.js"></script>
  <script>
    const beeper = `
    instr 1
    asig = poscil:a(0.3, 440)
    outc asig, asig
    endin
    `
    document.getElementById('start').onclick = ()=> {
    csound.startRealtime();
    csound.compileOrc(beeper);
    };
  </script>
</body>
</html>

API

Many these functions are a direct implementation of the Csound API. Some are csound-wasm specific.

Public Function	Parameters	Description
csound.startRealtime(config*)	config::Object default: {nchnls: 2, zerodbfs: 1, sr: 44100, ksmps: 256}	starts/initializes realtime as oppsed to rendering to file
csound.compileOrc(orc)	orc::String	Compiles any orchestra code at k-rate without return value.
csound.renderToFile(csd, file)	csd::String, file::String	Renders CSD string, filepath for the file output, currently only supported on node
csound.evalCode(orc)	orc::String	like compileOrc but returns status number on i-rate (0 if successful)
csound.inputMessage(sco)	sco::String	sends (score) event(s) without pre-processing, use \n to seperate multiscore statements
csound.readScore(sco)	sco::String	like inputMessage but tries to pre-process the before emitting the event
csound.getControlChannel
csound.setControlChannel
csound.setStringChannel
csound.getScoreTime
csound.playCSD
csound.reset
csound.destroy
csound.setOption
csound.compileCSD
csound.setTable
csound.getTable
csound.getTableLength
csound.getKsmps
csound.get0dbfs
csound.enableMidi
csound.pushMidi
csound.compileOrc
csound.evalCode
csound.inputMessage
csound.readScore

Keywords

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Package last updated on 03 Mar 2018

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