Audio source separation using snakes, crabs and torches

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Audio source separation is the process of separating the individual sources from a mixed audio stream. This can be used, for example, to remove the vocals from a song in a karaoke application, to extract voice from a movie to allow for better transcription without background noise, or to remove one specific instrument from your favorite song and playing that instrument yourself.

In this lightning talk I will present the GStreamer "demucs" plugin. The plugin uses a PyTorch music source separation model, that is available as an easily installable Python package, from a GStreamer plugin written in Rust. This mix of technologies provides some interesting technical puzzles.

Creation date: Oct. 23, 2025

Speakers: Sebastian Dröge

Company: GStreamer

License: CC BY-SA 3.0

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