---
title: ACIDLOOP
emoji: 🎛️
colorFrom: red
colorTo: gray
sdk: static
app_file: index.html
pinned: false
license: mit
short_description: Groovebox DAW for industrial techno, gabber, acid and rave
---

# ACIDLOOP

An open-source groovebox DAW for industrial techno, gabber, acid and rave.
The whole engine is Rust compiled to WebAssembly, running inside an
AudioWorklet. Nothing is sent anywhere: it runs entirely in the browser.

## What is here

- 8 fixed tracks, each an instrument plus a chain of inserts
- 15 instruments — a 12-voice drum machine, a 303-style acid bassline, a
  16-voice polysynth with wavetables, and individual drum voices
- 11 effects — EQ, filter, distortion, compressor, limiter, gate, delay,
  reverb, chorus, ring modulator, pitch shifter
- Step sequencer with accents, mixer with constant-power panning and real
  metering, automation, WAV export at 24-bit
- **Audio to MIDI** transcription using the McLeod Pitch Method — no neural
  model, no download
- **Groove Transplant** — extracts the rhythm from any recording, musical or
  not, and makes a track play it. Field recordings included: it reports its
  own confidence and refuses a source with no rhythm rather than inventing
  one
- **Ghost Producer** — a deterministic agentic loop that renders, measures
  perceptual features, and proposes changes

## Notes

Click Play to start — browsers require a gesture before any audio.

Everything is local-first: no account, no network calls, no telemetry.
Projects live in your browser's storage.

Source is not public at the moment. Built with Svelte 5, Rust and
WebAssembly.