ISCA Archive Interspeech 2005
ISCA Archive Interspeech 2005

Operating a public spoken guidance system in real environment

Ryuichi Nisimura, Akinobu Lee, Masashi Yamada, Kiyohiro Shikano

Takemaru-kun system is a practical speech-oriented guidance system developed to examine spoken interface through long-term operation in a public place that collected natural human-machine interaction data. In (2)004 the following advances improving reliability of the system were introduced, which conduced acquiring positive increase of access from users: (1) Rejection of unintended speech based on Gaussian Mixture Models (GMMs); (2) Removal of short, unnecessary inputs of impulsive noise; (3) Child or adult user discrimination; (4) Web-based monitoring mechanisms. This paper summarizes the Takemaru-kun system and analysis of 177,789 data collected by two-years actual operation. Experiments with the collected data proved that a combination of GMM-based verification and short input removal can excise 85% of the invalid inputs, including laughter, incomprehensible utterances, and even some background utterances.

doi: 10.21437/Interspeech.2005-389

Cite as: Nisimura, R., Lee, A., Yamada, M., Shikano, K. (2005) Operating a public spoken guidance system in real environment. Proc. Interspeech 2005, 845-848, doi: 10.21437/Interspeech.2005-389

  author={Ryuichi Nisimura and Akinobu Lee and Masashi Yamada and Kiyohiro Shikano},
  title={{Operating a public spoken guidance system in real environment}},
  booktitle={Proc. Interspeech 2005},