2024-03-28T18:31:17Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00013153
2023-01-16T04:00:08Z
320:321:322
Direction of Arrival Estimation Using Nonlinear Microphone Array
KAMIYANAGIDA, Hidekazu
SARUWATARI, Hiroshi
TAKEDA, Kazuya
ITAKURA, Fumitada
SHIKANO, Kiyohiro
open access
Copyright (C) 2001 IEICE
nonlinear array signal processing
microphone array
DOA estimation
complementary beamforming
This paper describes a new method for estimating the direction of arrival (DOA) using a nonlinear microphone array system based on complementary beamforming. Complementary beamforming is based on two types of beamformers designed to obtain complementary directivity patterns with respect to each other. In this system, since the resultant directivity pattern is proportional to the product of these directivity patterns, the proposed method can be used to estimate DOAs of 2(K-1) sound sources with K-element microphone array. First, DOA-estimation experiments are performed using both computer simulation and actual devices in real acoustic environments. The results clarify that DOA estimation for two sound sources can be accomplished by the proposed method with two microphones. Also, by comparing the resolutions of DOA estimation by the proposed method and by the conventional minimum variance method, we can show that the performance of the proposed method is superior to that of the minimum variance method under all reverberant conditions.
Institute of Electronics, Information and Communication Engineers
2001-04-01
eng
journal article
VoR
http://hdl.handle.net/2237/15048
https://nagoya.repo.nii.ac.jp/records/13153
http://www.ieice.org/jpn/trans_online/index.html
0916-8508
IEICE transactions on fundamentals of electronics, communications and computer sciences
E84-A
4
999
1010
https://nagoya.repo.nii.ac.jp/record/13153/files/427.pdf
application/pdf
1.0 MB
2018-02-20