arXiv Machine Learning By Xilin Jiang, Shun Zhang, Tejas Jayashankar, Yinghao Aaron Li, Osama Hanna

Conversational Voice Aesthetic Model with Reinforcement Learning from Human Listeners

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The paper presents Conversational Voice Aesthetic Model (CVAM), a speech large language model that describes voice aesthetics in conversational contexts. CVAM predicts nine categorical attributes such as gender, pitch, pacing, emotion, and delivery, and is trained on human-annotated data from the CANDOR corpus. Experiments show that CVAM aligns better with human listeners than Gemini 3.1 Pro and other open‑source speech LLMs, demonstrating the value of grounding voice aesthetics in human perception.

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