X2Streaming-ASR: wait when uncertain, emit when ready for streaming ASR
Streaming automatic speech recognition (ASR) for real-time voice agents and full-duplex dialogue must provide accurate partial transcripts with low commit latency. Existing systems commonly use a fixed chunk size, look-ahead, or target delay, or encourage emissions near estimated acoustic boundaries. These approaches do not directly optimize how much additional context to use at each output position under a single-pass, hard-commit constraint. We propose X2Streaming-ASR, which decomposes streaming recognition into when to commit and what to commit. Its three-stage training procedure first establishes streaming recognition ability, then warm-starts the commit policy with automatically prob...
| Authors | Zhiwei Lin, Kaiqi Fu, Rime Wen et al. |
|---|---|
| Primary category | cs.SD |
| Published | 8 September 2026 |
| Last updated at source | 12 October 2026 |
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