felixmandClaude Opus 5
e3faf32f55
Transcripts were far worse on Linux than on Windows for the same model, because of what reached the API rather than the model itself. Picking any mic from the tray menu never worked: PortAudio exposes the friendly names through PipeWire's JACK host API, which only accepts 48 kHz, so opening at 16 kHz failed outright and recording always fell back to the system default — whichever source PipeWire happened to prefer at that moment. That source is often the raw AMD digital mic, which ships a +0.14 FS DC bias, a full-scale clipped click in the first 15 ms of every stream, and speech around -50 dBFS. Windows' vendor driver hides all of this; PipeWire hands over the raw stream. - Negotiate rate and channels per device, then downmix and resample with resample_poly, so every listed device can actually be recorded from. - Hide devices that cannot work: playback endpoints JACK re-exposes as inputs, and raw ALSA hw: devices a sound server already owns (acp: hw:2,0 blocks forever on open). - Persist the chosen device by name in device.txt; PortAudio indices shift as USB gear comes and goes. Add a "System default" menu entry. - Condition every clip before upload: trim the warm-up click, high-pass out DC, normalise towards -20 dBFS under a -1 dBFS ceiling. - Refuse near-silent clips instead of paying for a hallucination, and log capture levels (speech, rms, peak, DC, clipping) plus PortAudio status warnings, which previously went to a discarded stderr. - Import scipy.signal as dsp: it was shadowing the stdlib signal module that the SIGUSR1 hotkey toggle depends on. mic_check.py records from Blurt's configured input, reports levels before and after conditioning, saves the WAV, and transcribes it with the current model. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
12 lines
134 B
Plaintext
12 lines
134 B
Plaintext
# Python
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__pycache__/
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*.py[cod]
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# Virtual environment
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.venv/
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# Blurt runtime config (per-machine)
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model.txt
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language.txt
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device.txt
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