Live test showed the bot needed ~30 tries to answer once: 15 of 18 captured
utterances were dropped as "segment dropped (confidence=...)" — but they were
real speech ("자비스 안녕" transcribed at avg_logprob-confidence 0.0-0.29), killed
by the min_confidence=0.3 floor. Short/quiet/accented Korean over a Discord mic
scores very low avg_logprob, so the confidence floor eats real speech.
Noise rejection is handled by the VAD pre-gate + no_speech_prob hard cutoff
(both kept). The avg_logprob floor is now OFF by default (STT_MIN_CONFIDENCE=0,
env-tunable), and the no_speech threshold is env-tunable too. Raise only if
hallucinations slip past the no_speech gate.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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