提出跨说话人情感强度控制新方法，保持语音一致性与质量。
Speaker-agnostic Emotion Vector for Cross-speaker Emotion Intensity Control
- 设计共享情感表达的无说话人依赖向量
- 在未见说话人上仍能保持语音一致性与可控性
- 适用于任意说话人的情感强度调节
跨说话人情感强度控制旨在仅使用目标说话人的中性语音，生成具有特定情感强度的语音。近期提出的感情算术方法通过单说话人情感向量实现情感强度控制，但在跨说话人场景中因源说话人与目标说话人情感向量不匹配，导致说话人一致性丢失。为此，本文提出一种无说话人依赖的情感向量，可捕捉多说话人之间的共享情感表达，适用于任意说话人。实验表明，该方法在跨说话人情感强度控制中，即使在未见说话人情况下，仍能有效保持说话人一致性、语音质量和可控性。
原文摘要 · Abstract (English)
Cross-speaker emotion intensity control aims to generate emotional speech of a target speaker with desired emotion intensities using only their neutral speech. A recently proposed method, emotion arithmetic, achieves emotion intensity control using a single-speaker emotion vector. Although this prior method has shown promising results in the same-speaker setting, it lost speaker consistency in the cross-speaker setting due to mismatches between the emotion vector of the source and target speakers. To overcome this limitation, we propose a speaker-agnostic emotion vector designed to capture shared emotional expressions across multiple speakers. This speaker-agnostic emotion vector is applicable to arbitrary speakers. Experimental results demonstrate that the proposed method succeeds in cross-speaker emotion intensity control while maintaining speaker consistency, speech quality, and controllability, even in the unseen speaker case.
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