This is a part of Node3D project.

npm install @node-3d/webaudio

Node.js addon implementing the Web Audio Api.

Import any class you like from the module and then follow the doc:

import { AudioContext } from '@node-3d/webaudio'; // usually this is enough

Create a silent PCM buffer using the Web Audio arguments, then write samples:

const context = new AudioContext();
const buffer = context.createBuffer(1, context.sampleRate, context.sampleRate);
const samples = buffer.getChannelData(0);
samples[0] = 0.5;

new AudioBuffer({ length, sampleRate, numberOfChannels? }) is also supported. createBuffer() requires all three arguments. Invalid buffer dimensions and sample rates throw NotSupportedError; an invalid channel index throws IndexSizeError.

This module is WORK IN PROGRESS. Unimplemented or noncompliant Web Audio behavior remains work to fix.

Currently exported classes:

• AudioBuffer
• AudioContext
• AudioParam
• AnalyserNode
• BiquadFilterNode
• ConvolverNode
• GainNode
• PannerNode
• AudioBufferSourceNode
• OscillatorNode
• AudioScheduledSourceNode

In examples directory, currently working examples are prepended with _.

Release archives are built by this repository's public GitHub Actions workflows.

Attestations: https://github.com/node-3d/webaudio/attestations

To verify a downloaded archive:

gh release download <tag> -R node-3d/webaudio -p <platform>.gz
gh attestation verify <platform>.gz -R node-3d/webaudio

This addon is ABI-compatible across Node.js versions. There is no compilation during npm install.