PACE: A Playback-Aligned Context Engine for LLM-Based Full-Duplex Voice Dialogue
LLM-based full-duplex voice services allow users to speak while the assistant is responding. Because servers can generate output and advance dialogue state faster than clients can play it, subsequent user speech may be interpreted based on content the user never heard. We call this failure Generative Context Mis-anchoring (GCM). To address GCM issues, we present PACE, a provider-independent middleware layer that anchors model-facing context to the client playback boundary, a system-observable proxy for what the user could have heard. After an interruption, PACE repairs this context to exclude assistant content that never reached playback, while preserving low-latency generation across het...
| Authors | Shibo Wang, Zicheng Zhang, Libo Wang et al. |
|---|---|
| Primary category | cs.SD |
| Published | 7 August 2026 |
| Last updated at source | 7 August 2026 |
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