Rhythm Modeling for Voice Conversion

• URL: http://arxiv.org/abs/2307.06040v1
• Date: Wed, 12 Jul 2023 09:35:16 GMT
• Title: Rhythm Modeling for Voice Conversion
• Authors: Benjamin van Niekerk, Marc-Andr\'e Carbonneau, Herman Kamper
• Abstract summary: We introduce Urhythmic-an unsupervised method for rhythm conversion. We first divide source audio into segments approximating sonorants, obstruents, and silences. We then model rhythm by estimating speaking rate or the duration distribution of each segment type. Experiments show that Urhythmic outperforms existing unsupervised methods in terms of quality and prosody.
• Score: 23.995555525421224
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Voice conversion aims to transform source speech into a different target voice. However, typical voice conversion systems do not account for rhythm, which is an important factor in the perception of speaker identity. To bridge this gap, we introduce Urhythmic-an unsupervised method for rhythm conversion that does not require parallel data or text transcriptions. Using self-supervised representations, we first divide source audio into segments approximating sonorants, obstruents, and silences. Then we model rhythm by estimating speaking rate or the duration distribution of each segment type. Finally, we match the target speaking rate or rhythm by time-stretching the speech segments. Experiments show that Urhythmic outperforms existing unsupervised methods in terms of quality and prosody. Code and checkpoints: https://github.com/bshall/urhythmic. Audio demo page: https://ubisoft-laforge.github.io/speech/urhythmic.

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