CJ Pais 3985508ae7 transcribe.cpp vad (#2267) ...

* refactor: run Silero VAD through transcribe.cpp instead of ONNX

Moves VAD onto the engine we're consolidating on, so vad-rs is no longer
an ONNX Runtime consumer (only transcribe-rs remains). Silero v6.2 GGUF
replaces the v4 ONNX model; v4's architecture can't load in transcribe.cpp.

VAD scores every 32 ms frame, so it runs in the app process rather than
the engine worker, whose lifetime and serial request loop are tied to the
ASR model. Only CPU backends are registered there, so no GPU driver code
loads into the app. The 0.3 threshold and ms-based timing constants carry
over; frame counts follow the model's 512-sample frames.

* slim comments

* restore Silero frame-size comment

* comment

* logging + minor review

2026-10-12 15:42:34 +08:00

1.2 MiB

Raw Permalink History

View Raw