Speaker diarization at Google: From modularized systems to LLMs

In this talk, we will introduce the development and evolution of speaker diarization technologies at Google in the past decade, and how they landed as impactful products such as Cloud Speech-to-Text and the Pixel Recorder app. The talk will cover four critical milestones of the speaker diarization technologies at Google: (1) leveraging deep speaker embeddings; (2) leveraging supervised clustering; (3) leveraging sequence transducers; and (4) leveraging large language models. The talk will also discuss how speaker diarization will evolve in the new era of multimodal large language models.