Towards a Japanese Full-duplex Spoken Dialogue System

Fuente: arXiv
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Auteurs principaux: Ohashi, Atsumoto, Iizuka, Shinya, Jiang, Jingjing, Higashinaka, Ryuichiro
Format: Preprint
Publié: 2025
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author Ohashi, Atsumoto
Iizuka, Shinya
Jiang, Jingjing
Higashinaka, Ryuichiro
author_facet Ohashi, Atsumoto
Iizuka, Shinya
Jiang, Jingjing
Higashinaka, Ryuichiro
contents Full-duplex spoken dialogue systems, which can model simultaneous bidirectional features of human conversations such as speech overlaps and backchannels, have attracted significant attention recently. However, the study of full-duplex spoken dialogue systems for the Japanese language has been limited, and the research on their development in Japanese remains scarce. In this paper, we present the first publicly available full-duplex spoken dialogue model in Japanese, which is built upon Moshi, a full-duplex dialogue model in English. Our model is trained through a two-stage process: pre-training on a large-scale spoken dialogue data in Japanese, followed by fine-tuning on high-quality stereo spoken dialogue data. We further enhance the model's performance by incorporating synthetic dialogue data generated by a multi-stream text-to-speech system. Evaluation experiments demonstrate that the trained model outperforms Japanese baseline models in both naturalness and meaningfulness.
format Preprint
id arxiv_https___arxiv_org_abs_2506_02979
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Towards a Japanese Full-duplex Spoken Dialogue System
Ohashi, Atsumoto
Iizuka, Shinya
Jiang, Jingjing
Higashinaka, Ryuichiro
Computation and Language
Audio and Speech Processing
Full-duplex spoken dialogue systems, which can model simultaneous bidirectional features of human conversations such as speech overlaps and backchannels, have attracted significant attention recently. However, the study of full-duplex spoken dialogue systems for the Japanese language has been limited, and the research on their development in Japanese remains scarce. In this paper, we present the first publicly available full-duplex spoken dialogue model in Japanese, which is built upon Moshi, a full-duplex dialogue model in English. Our model is trained through a two-stage process: pre-training on a large-scale spoken dialogue data in Japanese, followed by fine-tuning on high-quality stereo spoken dialogue data. We further enhance the model's performance by incorporating synthetic dialogue data generated by a multi-stream text-to-speech system. Evaluation experiments demonstrate that the trained model outperforms Japanese baseline models in both naturalness and meaningfulness.
title Towards a Japanese Full-duplex Spoken Dialogue System
topic Computation and Language
Audio and Speech Processing
url https://arxiv.org/abs/2506.02979