In 1990, he became a Research Associate at Department of Information Science, Kyoto University. From 1995 to 1996, he was a visiting researcher at Bell Laboratories, Murray Hill, NJ, USA. Currently, he is an Associate Professor at School of Informatics, Kyoto University. He is also an Invited Researcher at ATR Spoken Language Translation Research Laboratories.

He has been working on speech recognition and understanding. He has also been engaged in projects on a Japanese speech dictation system and spoken dialogue systems. He received the 1997 Awaya Memorial Award from Acoustical Society of Japan and the 2000 Sakai Memorial Award from Information Processing Society of Japan. He is a member of Acoustical Society of Japan (ASJ), Institute of Electronics, Information and Communication Engineers (IEICE), Information Processing Society of Japan (IPSJ), Japanese Society of Artificial Intelligence (JSAI) and the IEEE.