Development of zonal beam former and its application to robot audition

Nobuaki Tanaka, Tetsuji Ogawa, Kenzo Akagiri, Tetsunori Kobayashi

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

We have proposed a zonal beamformer (ZBF), which enhances the sound source located in a zonal space, and applied the ZBF to noise reduction systems for robot audition. A conversational partner of a robot does not always remain stationary with respect to the robot. In order to cope with such a situation, we have proposed a fan-like beamformer (FBF), which enhances the sound source located in a fan-like space in front of the robot under the assumption that the partner is in front of the robot. However, the FBF may degrade the noise reduction performance when directional noise sources are located behind the target source because the FBF widens the space as the distance from the robot increases. The ZBF can better improve the performance of eliminating the directional noise coming from behind the target source than the FBF because the ZBF has a considerably sharper directivity than the FBF.

Original languageEnglish
Pages (from-to)1529-1533
Number of pages5
JournalEuropean Signal Processing Conference
Publication statusPublished - 2010 Dec 1
Event18th European Signal Processing Conference, EUSIPCO 2010 - Aalborg, Denmark
Duration: 2010 Aug 232010 Aug 27

ASJC Scopus subject areas

  • Signal Processing
  • Electrical and Electronic Engineering

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