Papers › DiffEditor: Enhancing Speech Editing with Semantic Enrichment and Acoustic Consistency

DiffEditor: Enhancing Speech Editing with Semantic Enrichment and Acoustic Consistency

19 Sep 2024arXiv:2409.12992archive 2025-07-28

Yang Chen, Yuhang Jia, Shiwan Zhao, Ziyue Jiang, Haoran Li, Jiarong Kang, Yong Qin

As text-based speech editing becomes increasingly prevalent, the demand for unrestricted free-text editing continues to grow. However, existing speech editing techniques encounter significant challenges, particularly in maintaining intelligibility and acoustic consistency when dealing with out-of-domain (OOD) text. In this paper, we introduce, DiffEditor, a novel speech editing model designed to enhance performance in OOD text scenarios through semantic enrichment and acoustic consistency. To improve the intelligibility of the edited speech, we enrich the semantic information of phoneme embeddings by integrating word embeddings extracted from a pretrained language model. Furthermore, we emphasize that interframe smoothing properties are critical for modeling acoustic consistency, and thus we propose a first-order loss function to promote smoother transitions at editing boundaries and enhance the overall fluency of the edited speech. Experimental results demonstrate that our model achieves state-of-the-art performance in both in-domain and OOD text scenarios.

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