Publication Details
Semi-supervised Sequence-to-sequence ASR using Unpaired Speech and Text
Watanabe Shinji, Dr. (JHU)
Astudillo Ramon (IBM Watson)
Hori Takaaki (MERL)
Burget Lukáš, doc. Ing., Ph.D. (DCGM FIT BUT)
Černocký Jan, prof. Dr. Ing. (DCGM FIT BUT)
Sequence-to-sequence, end-to-end, ASR, TTS, semi-supervised, unsupervised, cycle consistency
Sequence-to-sequence automatic speech recognition (ASR) models require large quantities of data to attain high performance. For this reason, there has been a recent surge in interest for unsupervised and semi-supervised training in such models. This work builds upon recent results showing notable improvements in semi-supervised training using cycle-consistency and related techniques. Such techniques derive training procedures and losses able to leverage unpaired speech and/or text data by combining ASR with Text-to-Speech (TTS) models. In particular, this work proposes a new semi-supervised loss combining an end-to-end differentiable ASR!TTS loss with TTS!ASR loss. The method is able to leverage both unpaired speech and text data to outperform recently proposed related techniques in terms of %WER. We provide extensive results analyzing the impact of data quantity and speech and text modalities and show consistent gains across WSJ and Librispeech corpora. Our code is provided in ESPnet to reproduce the experiments.
@INPROCEEDINGS{FITPUB12089, author = "K. Murali Baskar and Shinji Watanabe and Ramon Astudillo and Takaaki Hori and Luk\'{a}\v{s} Burget and Jan \v{C}ernock\'{y}", title = "Semi-supervised Sequence-to-sequence ASR using Unpaired Speech and Text", pages = "3790--3794", booktitle = "Proceedings of Interspeech", journal = "Proceedings of Interspeech - on-line", volume = 2019, number = 9, year = 2019, location = "Graz, AT", publisher = "International Speech Communication Association", ISSN = "1990-9772", doi = "10.21437/Interspeech.2019-3167", language = "english", url = "https://www.fit.vut.cz/research/publication/12089" }