An unsupervised text-to-speech synthesis (TTS) system learns to generate the speech waveform corresponding to any written sentence in a language by observing: 1) a collection of untranscribed speech waveforms in that language; 2) a collection of texts written in that language without access to any transcribed speech. Developing such a system can significantly improve the availability of speech technology to languages without a large amount of parallel speech and text data. This paper proposes an unsupervised TTS system by leveraging recent advances in unsupervised automatic speech recognition (ASR). Our unsupervised system can achieve comparable performance to the supervised system in seven languages with about 10-20 hours of speech each. A careful study on the effect of text units and vocoders has also been conducted to better understand what factors may affect unsupervised TTS performance. The samples generated by our models can be found at https://cactuswiththoughts.github.io/UnsupTTS-Demo.

该论文提出了一种基于对齐模块输出伪文本和另一个合成模块使用伪文本进行训练和实际文本进行推断的无监督文本转语音综合系统，可以在每种语言的10-20小时语音中实现与监督系统相当的性能，并开展了对文本单元和声码器影响的研究。

无监督文本转语音合成与无监督自动语音识别