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arXiv 2106.08352eess.AScs.LGcs.SD
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Ctrl-P:语音合成中韵律变化的时间控制

Ctrl-P: Temporal Control of Prosodic Variation for Speech Synthesis

Papercup Technologies Ltd.(Papercup科技有限公司);University of Edinburgh(爱丁堡大学)

Devang S Ram Mohan, Vivian Hu, Tian Huey Teh, Alexandra Torresquintero, Christopher G. R. Wallis, Marlene Staib, Lorenzo Foglianti, Jiameng Gao, Simon King

摘要:

文本并不完全指定口语形式,因此文本到语音模型必须能够从语音数据中学习,这些语音数据以相应文本无法解释的方式变化。减少训练数据中无法解释的变化量的单向式方法之一是提供声学信息作为附加学习信号。当生成语音时,修改该声学信息使得能够产生文本的多个不同的再现。由于许多原因不明的变化是在韵律,我们提出了一个模型,生成语音明确的韵律的三个主要声学相关条件:$F_{0}$,能量和持续时间。该模型在如何指定这些特征的值方面是灵活的:它们可以由外部提供,或者从文本中预测,或者预测然后进行修改。与采用变分自动编码器来学习无监督潜在特征的模型相比,我们的模型提供了更可解释的,时间精确的和分离的控制。当从文本中自动预测声学特征时,它生成的语音比带参考编码器的Tacotron 2模型更自然。预测的声学特征的后续人在回路修改可以显著地进一步增加自然度。

英文摘要:

Text does not fully specify the spoken form, so text-to-speech models must be able to learn from speech data that vary in ways not explained by the corresponding text. One way to reduce the amount of unexplained variation in training data is to provide acoustic information as an additional learning signal. When generating speech, modifying this acoustic information enables multiple distinct renditions of a text to be produced. Since much of the unexplained variation is in the prosody, we propose a model that generates speech explicitly conditioned on the three primary acoustic correlates of prosody: $F_{0}$, energy and duration. The model is flexible about how the values of these features are specified: they can be externally provided, or predicted from text, or predicted then subsequently modified. Compared to a model that employs a variational auto-encoder to learn unsupervised latent features, our model provides more interpretable, temporally-precise, and disentangled control. When automatically predicting the acoustic features from text, it generates speech that is more natural than that from a Tacotron 2 model with reference encoder. Subsequent human-in-the-loop modification of the predicted acoustic features can significantly further increase naturalness.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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