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Shashi Kumar

2 papers indexed

arxivcs.CLcs.AI2026-07-09

When Synthetic Speech Is All You Have: Better Call GRPO

Shashi Kumar, Yanis Labrak, Hasindri Watawana, Sergio Burdisso, Esaú Villatoro-Tello, Kadri Hacioğlu, et al.

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 acoustically mismatched with real recordings…

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arxivcs.CLcs.AI2026-06-27

How to Leverage Synthetic Speech for LLM-Based ASR Systems?

Yanis Labrak, Dairazalia Sanchez-Cortes, Sergio Burdisso, Séverin Baroudi, Shashi Kumar, Esaú Villatoro-Tello, et al.

In regulated domains such as banking and healthcare, where privacy constraints make real speech costly to collect and retain, synthetic speech from modern text-to-speech (TTS) is an appealing alternative for training automatic speech recognition (ASR) without exposing sensitive c…

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