TY - GEN
T1 - Robust steerable differential beamformers with null constraints for concentric circular microphone arrays
AU - Wang, Xuehan
AU - Huang, Gongping
AU - Cohen, Israel
AU - Benesty, Jacob
AU - Chen, Jingdong
N1 - Publisher Copyright:
©2021 IEEE
PY - 2021
Y1 - 2021
N2 - Differential beamformers with concentric circular microphone arrays (CCMAs) are desirable for use in various applications since they can form frequency-invariant spatial responses, have better beam steering flexibility than linear arrays, and suffer less with beampattern irregularity and white noise amplification than circular microphone arrays (CMAs). The methods developed previously for differential beamforming with CCMAs are based on the series expansion. Such methods need to know the analytic form of the target beampattern, which may not be accessible in practice. Furthermore, expansion error may lead to erroneous solution, which can cause noise amplification instead of reduction. In this paper, we extend our recently developed beamforming method for CMAs to the design of differential beamformers with CCMAs, which takes advantage of the symmetric null constraints from the beampattern. Simulations are performed to justify the properties of the proposed approach.
AB - Differential beamformers with concentric circular microphone arrays (CCMAs) are desirable for use in various applications since they can form frequency-invariant spatial responses, have better beam steering flexibility than linear arrays, and suffer less with beampattern irregularity and white noise amplification than circular microphone arrays (CMAs). The methods developed previously for differential beamforming with CCMAs are based on the series expansion. Such methods need to know the analytic form of the target beampattern, which may not be accessible in practice. Furthermore, expansion error may lead to erroneous solution, which can cause noise amplification instead of reduction. In this paper, we extend our recently developed beamforming method for CMAs to the design of differential beamformers with CCMAs, which takes advantage of the symmetric null constraints from the beampattern. Simulations are performed to justify the properties of the proposed approach.
KW - Concentric circular microphone arrays
KW - Differential beamforming
KW - Frequency-invariant beampattern
KW - Microphone arrays
UR - http://www.scopus.com/inward/record.url?scp=85115171298&partnerID=8YFLogxK
U2 - 10.1109/ICASSP39728.2021.9414119
DO - 10.1109/ICASSP39728.2021.9414119
M3 - 会议稿件
AN - SCOPUS:85115171298
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 4465
EP - 4469
BT - 2021 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2021 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2021
Y2 - 6 June 2021 through 11 June 2021
ER -