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README.md
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## Evaluation (evidence, not just claims)
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- **Single-speaker check** (ECAPA-TDNN embeddings): same-speaker cosine 0.74 vs different-speaker 0.21 (separation 0.52, verification AUC 0.96 / EER 9.1%; 0/11 speakers flagged).
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- **Transcript reliability**: English cross-ASR agreement with Whisper = 6.8% WER / 4.5% CER (n=40)
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- **Emotion-tag reliability** (sarvam-30b vs sarvam-105b on 120 clips): 65% agreement, Cohen's κ 0.55.
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- **Phoneme coverage**: English 39 (100%), Telugu 44 (88%).
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- **Perceptual quality** (DNSMOS OVRL, published set): EN 3.21 (86% pass>3.0), TE 3.19 (86% pass>3.0). Filter `dnsmos_pass=True` for a stricter subset.
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5. Automated quality gates (clipping, SNR, silence, music/noise bed, ASR confidence, dedup).
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6. Hybrid emotion tagging: per-speaker-normalized acoustic features + Sarvam LLM,
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with an acoustic whisper override.
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7. Human review (listen, fix transcripts, relabel)
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8. Light loudness normalization (dynamics preserved), balanced emotion selection.
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## Audio
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## Evaluation (evidence, not just claims)
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- **Single-speaker check** (ECAPA-TDNN embeddings): same-speaker cosine 0.74 vs different-speaker 0.21 (separation 0.52, verification AUC 0.96 / EER 9.1%; 0/11 speakers flagged).
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- **Transcript reliability**: English cross-ASR agreement with Whisper = 6.8% WER / 4.5% CER (n=40), strong. Realtime ASR language-ID matched the target language on 100% of EN and 100% of TE clips. Telugu cross-ASR is not a valid proxy (Whisper is weak in Telugu); Telugu transcripts are best audited by human review.
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- **Emotion-tag reliability** (sarvam-30b vs sarvam-105b on 120 clips): 65% agreement, Cohen's κ 0.55.
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- **Phoneme coverage**: English 39 (100%), Telugu 44 (88%).
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- **Perceptual quality** (DNSMOS OVRL, published set): EN 3.21 (86% pass>3.0), TE 3.19 (86% pass>3.0). Filter `dnsmos_pass=True` for a stricter subset.
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5. Automated quality gates (clipping, SNR, silence, music/noise bed, ASR confidence, dedup).
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6. Hybrid emotion tagging: per-speaker-normalized acoustic features + Sarvam LLM,
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with an acoustic whisper override.
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7. Human review (listen, fix transcripts, relabel); **human labels override automated ones**.
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8. Light loudness normalization (dynamics preserved), balanced emotion selection.
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## Audio
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