- SpeexDSP (Legacy Lightweight)
A classic, highly portable C library for devices where neural networks are too heavy.
Speex Preprocessor: Combines NS, AGC, and VAD into a single efficient state.
Speex Echo Canceller: A separate module for acoustic echo cancellation.
How to get them: Available on GitHub (xiph/speexdsp) under BSD-3-Clause. Often used in embedded projects (like ESP32-SpeexDSP).
A classic, highly portable C library for devices where neural networks are too heavy.