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Changelog

1.1.0

Built-in audio output via audio-speaker — no optional speaker package needed
AudioContext plays through system speakers automatically on resume()
13 runnable examples (node examples/<name>.js)
outStream still supported for custom output (stdout, streams)

Dependencies

Added audio-speaker (cross-platform audio output, zero native compilation)
Removed optional speaker dependency

1.0.0

Pure-JS Web Audio API. 100% W3C Web Platform Tests conformance.

Spec compliance

100% WPT pass rate (4300 tests)
All 26 audio node types implemented
Sample-accurate scheduling with sub-sample interpolation
AudioWorklet with URL module loading and MessagePort
Full AudioParam automation (setValueAtTime, ramps, curves, cancelAndHold)
Correct channel mixing (speakers/discrete) per spec
OfflineAudioContext with suspend/resume

Runs everywhere

Node.js 18+, Deno, Bun
Serverless, edge, Workers
Browser polyfill: import 'web-audio-api/polyfill'
Auto-detects speaker package for real-time output, falls back to stdout

Dependencies

audio-buffer — AudioBuffer
audio-decode — 12+ audio format decoding
automation-events — AudioParam automation timeline
fourier-transform — FFT (real + complex)

Breaking changes from 0.x

ESM only (no CommonJS)
Requires Node.js 18+
AudioContext starts suspended (call resume())
outStream auto-detects — no longer required to set manually
Error types are spec-correct DOMException (not plain Error)

0.2.2

Removed node-speaker and mathjs dependencies

0.2.1

Now use aurora installed from npm

0.2.0

Refactored to ES6

0.1.5

AudioNode and AudioContext bug fixes

0.1.0

AudioContext (partial), AudioParam, AudioBufferSourceNode, GainNode