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 language | English |
|---|---|
| Pages (from-to) | 1529-1533 |
| Number of pages | 5 |
| Journal | European Signal Processing Conference |
| Publication status | Published - 2010 Dec 1 |
| Event | 18th European Signal Processing Conference, EUSIPCO 2010 - Aalborg, Denmark Duration: 2010 Aug 23 → 2010 Aug 27 |
ASJC Scopus subject areas
- Signal Processing
- Electrical and Electronic Engineering