Demucs music stem separator rewritten in Rust – runs in the browser
Hi HN! I reimplemented HTDemucs v4 (Meta's music source separation model) in Rust, using Burn. It splits any song into individual stems — drums, bass, vocals, guitar, piano — with no Python runtime or server involved. Try it now: https://nikhilunni.github.io/demucs-rs/ (needs a WebGPU-capable browser — Chrome/Edge work best) GitHub: https://github.com/nikhilunni/demucs-rs It runs three ways: - In the browser — the full ML inference pipeline compiles to WASM and runs on your GPU via WebGPU. No uploads, nothing leaves your machine. - Native CLI —…
Demucs music stem separator rewritten in Rust – runs in the browser launched on March 3, 2026 with 19 votes, #885 of 23,380 launches that month and more than 90% of that year's launches.
In plain words
Demucs-rs is a music stem separator that splits songs into individual tracks—drums, bass, vocals, guitar, and piano—using Meta's HTDemucs v4 model reimplemented in Rust. It runs directly in WebGPU-capable browsers with no server uploads, as a native command-line tool, or as a DAW plugin for macOS, keeping all processing local to the user's machine. The tool is designed for musicians, producers, and audio engineers who need to isolate individual instruments from complete tracks.
written from the facts on this page · September 2026
From the sources
Rust powered waveform source separation. Contribute to nikhilunni/demucs-rs development by creating an account on GitHub.
In the maker’s words, at launch
Hi HN! I reimplemented HTDemucs v4 (Meta's music source separation model) in Rust, using Burn. It splits any song into individual stems — drums, bass, vocals, guitar, piano — with no Python runtime or server involved. Try it now: https://nikhilunni.github.io/demucs-rs/ (needs a WebGPU-capable…
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