JavaScript packages for audio: decode, encode, measure, process, synthesize and play, the same code in the browser, Node, Deno and Bun.
// Blackbird by Diana Tudor, xeno-canto.org/1059970, CC BY 4.0, an excerpt
audio('/home/blackbird.mp3')150+ plugins, one job each: filters, dynamics, reverbs, pitch and time, denoise, synthesis, analysis. audio loads each by name.
0223 tools in the browser: convert, measure loudness, remove noise, split stems, transcribe, tune.
03The same edits in a terminal: a file in, its edits, a file out; a check that fails a build. npx audio voice.wav trim normalize podcast save clean.mp3
How sound is drawn, set and heard, tried live. Every figure is computed in the page from the sound's samples.
05An audio editor in the browser, every edit of it a line of audio code. Connect it to an agent of yours and it edits too.
06audio as an MCP server and an agent skill: an agent measures, edits and plays sound with the same calls. npx -y audio --mcp
Each in your browser on an audiojs package; nothing is uploaded.
All 23 utilities →The playground as a Mac app: a window of its own, sounds opened from Finder and the Dock, the menu bar’s menus, the microphone.
macOS on Apple silicon