3D sound field analysis using circular higher-order microphone array

Hanchi Chen, Thushara D. Abhayapala, Wen Zhang

科研成果: 书/报告/会议事项章节会议稿件同行评审

7 引用 (Scopus)

摘要

This paper proposes the theory and design of circular higher-order microphone arrays for 3D sound field analysis using spherical harmonics. Through employing the spherical harmonic translation theorem, the local spatial sound fields recorded by each higher-order microphone placed in the circular arrays are combined to form the sound field information of a large global spherical region. The proposed design reduces the number of the required sampling points and the geometrical complexity of microphone arrays. We develop a two-step method to calculate sound field coefficients using the proposed array structure, i) analytically combine local sound field coefficients on each circular array and ii) solve for global sound field coefficients using data from the first step. Simulation and experimental results show that the proposed array is capable of acquiring the full 3D sound field information over a relatively large spherical region with decent accuracy and computational simplicity.

源语言英语
主期刊名2015 23rd European Signal Processing Conference, EUSIPCO 2015
出版商Institute of Electrical and Electronics Engineers Inc.
1153-1157
页数5
ISBN(电子版)9780992862633
DOI
出版状态已出版 - 22 12月 2015
已对外发布
活动23rd European Signal Processing Conference, EUSIPCO 2015 - Nice, 法国
期限: 31 8月 20154 9月 2015

出版系列

姓名2015 23rd European Signal Processing Conference, EUSIPCO 2015

会议

会议23rd European Signal Processing Conference, EUSIPCO 2015
国家/地区法国
Nice
时期31/08/154/09/15

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