Author

C. Lee

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#natural language process... Preprint Sep 2026

Phrase-Localized Language-Contrastive Guidance: Training-Free Localized Accent Control for Code-Switching Text-to-Speech

Phrase-Localized Language-Contrastive Guidance (LCG), a training-free inference framework that restores a native accent to code-switched phrases in cross-lingual text-to-speech, robustly increases the nativeness of the code-switched phrase while suppressing accent leakage, and preserving overall speaker identity and na...

C. Lee, Sangkwon Park, Donghun Kang et al. · 1 citation

#artificial intelligence Preprint Aug 2026

HEAR Who Said What: Unlocking Speaker-Attributed Reasoning via Counterfactual Voice Grounding

A2R, a 30B model optimized on Counterfactual Audio with Speaker-level Hard negatives (CASH), a dataset designed to guide the model to prioritize acoustic vocal cues over linguistic signals, achieves strong performance on HEAR and exhibits zero-shot generalization to diverse multi-speaker downstream tasks, demonstrating...

Dongwook Lee, Sangkwon Park, Eunwoo Song et al. · 0 citations