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Commit History
11 days ago
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fix(pronunciation): improve phoneme alignment and audio preprocessing pipeline
- Replace unconstrained DTW with global alignment and explicit gap penalties to avoid false deletions - Normalize phoneme symbols between eSpeak and wav2vec2, expand IPA features table - Reward length-only vowel mismatches (e.g., /i/ vs /iː/) with partial credit - Fix stress index mapping and prevent spurious stress errors - Improve audio preprocessing with edge padding and safer VAD - Deduplicate wav2vec2 model inference in api endpoint - Add automated alignment test suitecb82b68