How Do Instructions Shape Speech? Cross-Attention Attribution for Style-Captioned Text-to-Speech
Researchers propose a cross-attention attribution method for style-captioned text-to-speech systems, adapting the DAAM framework to speech diffusion models for the first time. Analysis of 3,600 style-caption and text combinations reveals how individual words influence acoustic output, showing that style tokens condition voice characteristics globally while peaking in early generation steps and deep network layers.