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Proceedings Paper

Acoustic focusing by microphone array for human interactive mobile robot
Author(s): Hiroshi Mizoguchi; Yoshiyuki Kato; Kazuyuki Hiraoka; Masaru Tanaka; Takaomi Shigehara; Taketoshi Mishima
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Paper Abstract

This paper proposes a method for a robot to pick up human voice clearly and remotely. The method utilizes microphones array. By setting gain and delay of each microphone properly, it enables to form "acoustic focus" at the desired location. The proposed method is intended to be used as a speech signal input for human interactive mobile robot. To confirm feasibility of the proposed idea, the authors conduct simulation and simple experiments. The simulation result supports the feasibility. As for the experiment, although the array is so simple that the number of microphones is only three and signal processing of the array is "offline", we can confirm that a sensitivity peak of the array appears at the desired location. Both results show possibility to realize "acoustic focus" at the desired location. Thus these results support feasibility of the proposed idea.

Paper Details

Date Published: 2 March 2001
PDF: 8 pages
Proc. SPIE 4195, Mobile Robots XV and Telemanipulator and Telepresence Technologies VII, (2 March 2001); doi: 10.1117/12.417297
Show Author Affiliations
Hiroshi Mizoguchi, Saitama Univ. (Japan)
Yoshiyuki Kato, Saitama Univ. (Japan)
Kazuyuki Hiraoka, Saitama Univ. (Japan)
Masaru Tanaka, Saitama Univ. (Japan)
Takaomi Shigehara, Saitama Univ. (Japan)
Taketoshi Mishima, Saitama Univ. (Japan)

Published in SPIE Proceedings Vol. 4195:
Mobile Robots XV and Telemanipulator and Telepresence Technologies VII
Matthew R. Stein; Howie M. Choset; Douglas W. Gage; Matthew R. Stein, Editor(s)

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