google/lyra

Health v2 · maintenance only

Adoption not part of the score

3973 stars · 367 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Lyra is a very low-bitrate speech codec from Google that combines traditional codec techniques with generative machine learning models to compress voice at 3.2-9.2kbps. It runs in real time on-device, including low-end Android phones, using a SoundStream-based generative model to reconstruct high-quality speech.

Use cases

• compress voice calls for very slow networks
• stream speech at ultra-low bitrates
• run real-time speech codec on mobile devices
• encode voice audio at 3kbps with ML
• build low-bandwidth voice communication apps

When to choose

• you need speech compression far below standard codec bitrates
• you need real-time on-device decoding on mobile hardware
• voice quality at low bitrate matters more than general audio support

When to avoid

• you need general audio or music compression, not just speech
• you need a standardized, interoperable codec for third-party clients
• you can't integrate Bazel-based C++ builds or ML model dependencies

Facets

library · maturity maintenance

audio-processing machine-learning speech-recognition compression machine-learning speech-processing windows cpp speech-codec low-bitrate generative-model soundstream voice-communication audio android linux macos

Member repositories

For agents

markdown · JSON · MCP: product_card(name="google/lyra")