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News/When Synthetic Speech Is All You Have: Better Call GRPO
arxiv
PublishedOctober 21, 2026 at 4:00 AM

When Synthetic Speech Is All You Have: Better Call GRPO

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arXiv:2607.08409v2 Announce Type: replace-cross Abstract: LLM-based ASR adapted to regulated domains such as banking is bottlenecked by privacy: real speech is costly and legally constrained to collect, making synthetic text-to-speech (TTS) an attractive substitute. Yet synthetic speech stays acoust

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