On the Design of Square Differential Microphone Arrays with A Multistage Structure

Xudong Zhao, Gongping Huang, Jacob Benesty, Jingdong Chen, Israel Cohen

科研成果: 书/报告/会议事项章节会议稿件同行评审

5 引用 (Scopus)

摘要

This paper studies the problem of designing square differential microphone arrays (SDMAs). It presents a multistage approach, which first divides an SDMA composed of M2 microphones into (M - 1)2 subarrays with each subarray being a 2 × 2 square array formed by four adjacent microphones. Then, differential beam- forming is performed with each subarray in the first-stage. The first-stage differential beamformers' outputs are subsequently used as the inputs of the second stage to form (M - 2)2 subarrays and a second-stage differential beamforming is then performed. Continu- ing this process till the (M-1)th stage, we obtain the final output of the SDMA. The SDMA designed in such a multistage structure has two important properties. First, the global weighting matrix is equal to the two dimensional convolution of weighting matrices from the first stage to the last one. Second, the global beampattern is equal to the product of beampatterns from all stages. Consequently, we can combine different kinds of beamformers in different stages and have better control of the performance metrics.

源语言英语
主期刊名ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
出版商Institute of Electrical and Electronics Engineers Inc.
746-750
页数5
ISBN(电子版)9781728176055
DOI
出版状态已出版 - 2021
活动2021 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2021 - Virtual, Toronto, 加拿大
期限: 6 6月 202111 6月 2021

出版系列

姓名ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
2021-June
ISSN(印刷版)1520-6149

会议

会议2021 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2021
国家/地区加拿大
Virtual, Toronto
时期6/06/2111/06/21

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