Sound field reconstruction method of spatial point sound source to accurately calibrate microphone arrays

被引：3

作者：

Tang, Jun ^{[1
]}

Wang, Qingqing ^{[1
]}

Wang, Zhao ^{[1
]}

Yan, Lei ^{[2
]}

机构：

[1] Tianjin Univ, Sch Civil Engn, Tianjin 300072, Peoples R China

[2] China Acad Launch Vehicle Technol, Beijing 100076, Peoples R China

来源：

APPLIED ACOUSTICS | 2022年 / 185卷

基金：

中国国家自然科学基金;

关键词：

Simulated point sound source; Microphone array; Positioning accuracy calibration; Coupling cavity sound source; SOURCE LOCALIZATION; AIRCRAFT;

D O I：

10.1016/j.apacoust.2021.108354

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The common methods to calibrate microphone array are those that calibrate each microphone. Different from these methods, this article proposes a simulated point sound source calibration method without calibrating each microphone. Suppose there is a microphone array in the sound field of the point source, according to the positional relationship between the array and the source, the dynamic sound signal of every microphone can be calculated. A microphone array calibration device (MACD) is designed to input the dynamic signals calculated into the actual microphone array by the coupling cavity standard sound sources. By comparing the position of the simulated point source with that located by array, position error correction curves are fitted to calibrate the positioning accuracy of microphone array. The experimental results reveal validity of the proposed method. (C) 2021 Elsevier Ltd. All rights reserved.

引用

页数：8

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