⚡ FocalCodec

A low-bitrate single-codebook 16 / 24 kHz speech codec based on focal modulation.

This repository contains the 50 Hz causal checkpoint with a codebook size of 2048 trained on Libri-Light, as described in the preprints.

• 📜 Preprints:

  • FocalCodec: Low-Bitrate Speech Coding via Focal Modulation Networks

  • FocalCodec-Stream: Streaming Low-Bitrate Speech Coding via Causal Distillation

• 🌐 Project Page: https://lucadellalib.github.io/focalcodec-web/

• 💾 GitHub: https://github.com/lucadellalib/focalcodec

▶️ Quickstart

See the readme at: https://github.com/lucadellalib/focalcodec

@ Citing

@article{dellalibera2025focalcodec,
    title   = {{FocalCodec}: Low-Bitrate Speech Coding via Focal Modulation Networks},
    author  = {Luca {Della Libera} and Francesco Paissan and Cem Subakan and Mirco Ravanelli},
    journal = {arXiv preprint arXiv:2502.04465},
    year    = {2025},
}

@article{dellalibera2025focalcodecstream,
    title   = {{FocalCodec-Stream}: Streaming Low-Bitrate Speech Coding via Causal Distillation},
    author  = {Luca {Della Libera} and Cem Subakan and Mirco Ravanelli},
    journal = {arXiv preprint arXiv:2509.16195},
    year    = {2025},
}

📧 Contact

luca.dellalib@gmail.com