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scripts/

gen_reference.py

Generates tests/fixtures/reference.json — the Python-side reference probabilities used by the Rust accuracy test (make accuracy).

Setup

python3 -m venv scripts/.venv
scripts/.venv/bin/pip install transformers onnxruntime numpy soundfile

Run

scripts/.venv/bin/python3 scripts/gen_reference.py

Re-run when

  • A fixture WAV changes (tests/fixtures/*.wav)
  • The model version changes (bump MODEL_VERSION in build.rs at the same time)

What it produces

File Description
tests/fixtures/silence_2s.wav 2 s of zeros at 16 kHz (generated if missing)
tests/fixtures/reference.json P(complete) for each (backend, clip) pair

Each entry in reference.json is keyed by backend so multiple Smart Turn variants can coexist:

  • pipecat — upstream Pipecat Smart Turn v3 on the English fixtures, plus the same model run on the Mandarin fixtures as a cross-lingual baseline.
  • wavekat-zh — WaveKat zh fine-tune of Smart Turn, only run on the Mandarin fixtures (zh_*.wav).

The Rust accuracy test (make accuracy) filters rows by backend at compile time — feature wavekat-smart-turn enables the second group.

Commit both files after re-running.