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James PineandClaude Opus 4.7
4ffbc03d15
Review feedback on the preprocessor: 1. ``trim_top_db=30`` was labelled "conservative" in the docstring but is actually *more* aggressive than librosa's default of 60. Normal speech dynamic range sits around 30 dB, so 30 dB would eat quiet trailing syllables and soft consonants. Raise the default to 40 dB — below normal speech dynamic range but still catching obvious edge silence — and fix the docstring. 2. Unconditional 100 ms edge padding ran even when ``librosa.effects.trim`` removed nothing. For a well-recorded 29.9 s upload that path would push the waveform past the 30 s ceiling and trigger a spurious "too long" rejection. Only pad when trimming actually shortened the audio, and cap the pad so the output never exceeds the input length. Adds a regression test for the net-neutral length behaviour. Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>