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Speech Synthesis with Mixed Emotions

2022-08-11 15:45:58
Kun Zhou, Berrak Sisman, Rajib Rana, B.W.Schuller, Haizhou Li

Abstract

Emotional speech synthesis aims to synthesize human voices with various emotional effects. The current studies are mostly focused on imitating an averaged style belonging to a specific emotion type. In this paper, we seek to generate speech with a mixture of emotions at run-time. We propose a novel formulation that measures the relative difference between the speech samples of different emotions. We then incorporate our formulation into a sequence-to-sequence emotional text-to-speech framework. During the training, the framework does not only explicitly characterize emotion styles, but also explores the ordinal nature of emotions by quantifying the differences with other emotions. At run-time, we control the model to produce the desired emotion mixture by manually defining an emotion attribute vector. The objective and subjective evaluations have validated the effectiveness of the proposed framework. To our best knowledge, this research is the first study on modelling, synthesizing and evaluating mixed emotions in speech.

Abstract (translated)

URL

https://arxiv.org/abs/2208.05890

PDF

https://arxiv.org/pdf/2208.05890.pdf


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