Ivan Podluzhnyi
Applied Scientist @Amazon
London, GB
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WORK HISTORY
Jan 2023 — Present
Applied Scientist @Amazon
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London, GB
Enhanced naturalness and expressiveness of new TTS voices using Direct Preference Optimization (DPO)• Designed and deployed an scalable measurement pipeline to track speaker identity, accent, and prosody drift in LLM-based TTS synthesis.• Built a tone-sensitive neural TTS front-end for Japanese Alexa, reducing relative SER by 41% and earning strong listener preference in MUSHRA evaluations.
ABOUT IVAN PODLUZHNYI
I am an Applied Scientist at Amazon AGI. I specialise in advancing speech and language…
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