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Jin-Xin Ji

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Preprint Sep 2026

InstCharVoice: Grounding Natural-Language Instructions for Character-Level Control in Text-to-Speech

Instruction-based text-to-speech (ITTS) systems enable natural-language control of expressive speech generation, but often offer limited transparency and fine-grained control over individual text units. Character-level controllable TTS systems provide explicit acoustic control, yet typically rely on user-specified acou...

Si-Hang Nie, Xue-Ru Li, Xiao-Fen Xing et al. · 0 citations

#natural language process... Preprint Sep 2026

Text Scores Do Not Establish Performance on Lexically Non-Diagnostic Speech Tasks: A Qwen2-Audio Quantization Case Study

Text-output scores alone do not show whether quantization preserves performance on speech tasks whose target labels cannot be recovered from the transcript. We evaluate fixed mixed 4/8-bit Qwen2-Audio-7B-Instruct allocations averaging 6 and 7 bits per parameter on 508 English-to-German FLEURS utterances and on 512 RAVD...

Meng-Zhe Geng, Jin-Xin Ji, Jun-Hao Xu · 0 citations