The f0 gap bridge filled every unvoiced gap up to 10 frames, but on the
SongCover stem 29 of 33 such gaps were consonants and breaths. Giving them
a pitch made the model sing them as a voiced buzz. Gaps are now bridged
only when the audio under them is tonal (spectral flatness <= 0.02).
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude
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