ISCA Archive Interspeech 2008
ISCA Archive Interspeech 2008

Speech recognition performance of CJLC: corpus of Japanese lecture contents

Satoru Kogure, Hiromitsu Nishizaki, Masatoshi Tsuchiya, Kazumasa Yamamoto, Shingo Togashi, Seiichi Nakagawa

This paper discusses the speech recognition of Japanese classroom lecture speech. In particular, we mention the influences of microphone differences and the language model differences on the speech recognition performance of classroom lectures. First, we collected actual classroom lecture contents from several universities in Japan. In this paper, we recorded the lecture speech using lapel microphones because lapel microphones are more commonly used to record lectures. LVCSR is one of the essential technologies for adding tag information to such lecture speech. Next, therefore, we researched the influence of the differences between microphones used for recording lecture on speech recognition performance. Finally, seven types of language models that were trained using three types of corpora were compared on the basis of their ability to lecture speech.

doi: 10.21437/Interspeech.2008-444

Cite as: Kogure, S., Nishizaki, H., Tsuchiya, M., Yamamoto, K., Togashi, S., Nakagawa, S. (2008) Speech recognition performance of CJLC: corpus of Japanese lecture contents. Proc. Interspeech 2008, 1554-1557, doi: 10.21437/Interspeech.2008-444

  author={Satoru Kogure and Hiromitsu Nishizaki and Masatoshi Tsuchiya and Kazumasa Yamamoto and Shingo Togashi and Seiichi Nakagawa},
  title={{Speech recognition performance of CJLC: corpus of Japanese lecture contents}},
  booktitle={Proc. Interspeech 2008},