Towards Expressive Speaking Style Modelling with Hierarchical Context Information for Mandarin Speech Synthesis

• URL: http://arxiv.org/abs/2203.12201v1
• Date: Wed, 23 Mar 2022 05:27:57 GMT
• Title: Towards Expressive Speaking Style Modelling with Hierarchical Context Information for Mandarin Speech Synthesis
• Authors: Shun Lei, Yixuan Zhou, Liyang Chen, Zhiyong Wu, Shiyin Kang, Helen Meng
• Abstract summary: We propose a hierarchical framework to model speaking style from context. A hierarchical context encoder is proposed to explore a wider range of contextual information. To encourage this encoder to learn style representation better, we introduce a novel training strategy.
• Score: 37.93814851450597
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Previous works on expressive speech synthesis mainly focus on current sentence. The context in adjacent sentences is neglected, resulting in inflexible speaking style for the same text, which lacks speech variations. In this paper, we propose a hierarchical framework to model speaking style from context. A hierarchical context encoder is proposed to explore a wider range of contextual information considering structural relationship in context, including inter-phrase and inter-sentence relations. Moreover, to encourage this encoder to learn style representation better, we introduce a novel training strategy with knowledge distillation, which provides the target for encoder training. Both objective and subjective evaluations on a Mandarin lecture dataset demonstrate that the proposed method can significantly improve the naturalness and expressiveness of the synthesized speech.

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