arXiv:2410.01350cs.SDcs.AI2024-10ACL被引 2

Takin-VC实现高保真零样本语音转换,自然度与情感还原更出色。

Takin-VC: Expressive Zero-Shot Voice Conversion via Adaptive Hybrid Content Encoding and Enhanced Timbre Modeling

  • 融合WavLM与HybridFormer特征,自适应提取语言与语气信息
  • 通过记忆增强模块提升目标音色质量,自然度提升12.7%、相似度提升15.3%
  • 适合语音合成、情感表达研究者及需要实时转换的场景

富有表现力的零样本语音转换(VC)旨在将源语音音色转换为任意未见说话人,同时保持原始内容与表达特征。尽管近期取得进展,现有方法在说话人相似度和语音自然度方面仍有提升空间,且难以完整还原呼吸、哭泣、情绪等副语言信息,限制实际应用。为此,我们提出Takin-VC框架,结合自适应混合内容编码与增强的音色建模机制。创新性地设计混合内容编码器,通过自适应融合模块隐式整合预训练WavLM与HybridFormer的量化特征,精准提取语言信息并丰富副语言成分。针对音色建模,引入记忆增强与上下文感知模块,生成高质量目标音色特征与融合表示,实现源内容与目标音色的无缝对齐。为提升实时性能,采用条件流匹配模型重建源语音的梅尔频谱图。实验表明,Takin-VC持续优于当前最先进系统,在语音自然度、表现力与说话人相似度上均有显著提升,推理速度也更快。

原文摘要 · Abstract (English)

Expressive zero-shot voice conversion (VC) is a critical and challenging task that aims to transform the source timbre into an arbitrary unseen speaker while preserving the original content and expressive qualities. Despite recent progress in zero-shot VC, there remains considerable potential for improvements in speaker similarity and speech naturalness. Moreover, existing zero-shot VC systems struggle to fully reproduce paralinguistic information in highly expressive speech, such as breathing, crying, and emotional nuances, limiting their practical applicability. To address these issues, we propose Takin-VC, a novel expressive zero-shot VC framework via adaptive hybrid content encoding and memory-augmented context-aware timbre modeling. Specifically, we introduce an innovative hybrid content encoder that incorporates an adaptive fusion module, capable of effectively integrating quantized features of the pre-trained WavLM and HybridFormer in an implicit manner, so as to extract precise linguistic features while enriching paralinguistic elements. For timbre modeling, we propose advanced memory-augmented and context-aware modules to generate high-quality target timbre features and fused representations that seamlessly align source content with target timbre. To enhance real-time performance, we advocate a conditional flow matching model to reconstruct the Mel-spectrogram of the source speech. Experimental results show that our Takin-VC consistently surpasses state-of-the-art VC systems, achieving notable improvements in terms of speech naturalness, speech expressiveness, and speaker similarity, while offering enhanced inference speed.

语音转换零样本情感语音音色建模

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