Steering intonational tunes in text-to-speech synthesis
Text-to-speech systems built on residual vector quantization often generate audio in two stages: a transformer backbone emits the first level of each frame's token stack, and a smaller depth model generates the rest autoregressively. We ask which components of such a model are responsible for prosodic intonation, more precisely for generating the English nuclear tune (for instance, the falling pitch melody that distinguishes an assertion from a question's rising melody), and whether interventions on those components can be used to control intonation. Prompt-based control mostly fails; only a final question mark is a reliable lever. Interchange interventions in CSM and S2 locate the tune: ...
| Authors | Juan Pablo Vigneaux, Jennifer Cole |
|---|---|
| Primary category | cs.SD |
| Published | 19 October 2026 |
| Last updated at source | 19 October 2026 |
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