Corrective feedback, emphatic speech synthesis, visual-speech exaggeration, pronunciation learning

12 Sep 2020 Yaohua Bu Weijun Li Tianyi Ma Shengqi Chen Jia Jia Kun Li Xiaobo Lu

To provide more discriminative feedback for the second language (L2) learners to better identify their mispronunciation, we propose a method for exaggerated visual-speech feedback in computer-assisted pronunciation training (CAPT). The speech exaggeration is realized by an emphatic speech generation neural network based on Tacotron, while the visual exaggeration is accomplished by ADC Viseme Blending, namely increasing Amplitude of movement, extending the phone's Duration and enhancing the color Contrast... (read more)

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