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Research2026-06-22 · source-backed
Mathur, Sayed, Madha et al. adapt the DAAM framework to speech diffusion, analyzing 3,600 style-caption/transcript pairs across 25 layers and 24 ODE steps in CapSpeech-TTS. They find style tokens have lower temporal variance than content tokens (confirming global conditioning), correlate with F0 and energy, and peak in early generation steps and deeper layers, with attention entropy bottoming at layer 17 where style importance peaks. Narrow on immediate deployment, useful for anyone doing controllability work in instruction-driven TTS.
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