End-to-End Text-to-Speech Based on Latent Representation of Speaking Styles Using Spontaneous Dialogue

• URL: http://arxiv.org/abs/2206.12040v1
• Date: Fri, 24 Jun 2022 02:32:12 GMT
• Title: End-to-End Text-to-Speech Based on Latent Representation of Speaking Styles Using Spontaneous Dialogue
• Authors: Kentaro Mitsui, Tianyu Zhao, Kei Sawada, Yukiya Hono, Yoshihiko Nankaku, Keiichi Tokuda
• Abstract summary: This study aims to realize a text-to-speech (TTS) that closely resembles human dialogue. First, we record and transcribe actual spontaneous dialogues. Proposed dialogue TTS is trained in two stages: first stage, variational autoencoder (VAE)-VITS or Gaussian mixture variational autoencoder (GMVAE)-VITS.
• Score: 19.149834552175076
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The recent text-to-speech (TTS) has achieved quality comparable to that of humans; however, its application in spoken dialogue has not been widely studied. This study aims to realize a TTS that closely resembles human dialogue. First, we record and transcribe actual spontaneous dialogues. Then, the proposed dialogue TTS is trained in two stages: first stage, variational autoencoder (VAE)-VITS or Gaussian mixture variational autoencoder (GMVAE)-VITS is trained, which introduces an utterance-level latent variable into variational inference with adversarial learning for end-to-end text-to-speech (VITS), a recently proposed end-to-end TTS model. A style encoder that extracts a latent speaking style representation from speech is trained jointly with TTS. In the second stage, a style predictor is trained to predict the speaking style to be synthesized from dialogue history. During inference, by passing the speaking style representation predicted by the style predictor to VAE/GMVAE-VITS, speech can be synthesized in a style appropriate to the context of the dialogue. Subjective evaluation results demonstrate that the proposed method outperforms the original VITS in terms of dialogue-level naturalness.

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