Audio2h ago
Apple Details On-Device Audio Synthesis Architecture
The AFM 3 Core Advanced model powers Siri Expressive Voices using a memory-efficient detokenizer. This architecture converts semantic audio tokens into high-fidelity speech within the Apple Matrix Coprocessor memory budget. It utilizes a three-component design and residual vector quantization. The approach enables real-time, high-quality voice synthesis without relying on cloud compute.