NAIST Simultaneous Speech Translation System for IWSLT 2024

Yuka Ko, Ryo Fukuda, Yuta Nishikawa, Yasumasa Kano, Tomoya Yanagita, Kosuke Doi, Mana Makinae, Haotian Tan, Makoto Sakai, Sakriani Sakti, Katsuhito Sudoh, Satoshi Nakamura


Abstract
This paper describes NAIST’s submission to the simultaneous track of the IWSLT 2024 Evaluation Campaign: English-to-German, Japanese, Chinese speech-to-text translation and English-to-Japanese speech-to-speech translation. We develop a multilingual end-to-end speech-to-text translation model combining two pre-trained language models, HuBERT and mBART. We trained this model with two decoding policies, Local Agreement (LA) and AlignAtt. The submitted models employ the LA policy because it outperformed the AlignAtt policy in previous models. Our speech-to-speech translation method is a cascade of the above speech-to-text model and an incremental text-to-speech (TTS) module that incorporates a phoneme estimation model, a parallel acoustic model, and a parallel WaveGAN vocoder. We improved our incremental TTS by applying the Transformer architecture with the AlignAtt policy for the estimation model. The results show that our upgraded TTS module contributed to improving the system performance.
Anthology ID:
2024.iwslt-1.23
Volume:
Proceedings of the 21st International Conference on Spoken Language Translation (IWSLT 2024)
Month:
August
Year:
2024
Address:
Bangkok, Thailand (in-person and online)
Editors:
Elizabeth Salesky, Marcello Federico, Marine Carpuat
Venue:
IWSLT
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
170–182
Language:
URL:
https://aclanthology.org/2024.iwslt-1.23
DOI:
10.18653/v1/2024.iwslt-1.23
Bibkey:
Cite (ACL):
Yuka Ko, Ryo Fukuda, Yuta Nishikawa, Yasumasa Kano, Tomoya Yanagita, Kosuke Doi, Mana Makinae, Haotian Tan, Makoto Sakai, Sakriani Sakti, Katsuhito Sudoh, and Satoshi Nakamura. 2024. NAIST Simultaneous Speech Translation System for IWSLT 2024. In Proceedings of the 21st International Conference on Spoken Language Translation (IWSLT 2024), pages 170–182, Bangkok, Thailand (in-person and online). Association for Computational Linguistics.
Cite (Informal):
NAIST Simultaneous Speech Translation System for IWSLT 2024 (Ko et al., IWSLT 2024)
Copy Citation:
PDF:
https://aclanthology.org/2024.iwslt-1.23.pdf