基于空心球阵列的稳态声场重建  

Steady Sound Field Reconstruction Based on Open Spherical Mircrophone Array

作　　者：张学勇 李加力[1,2] 赵越 毛毅菲 ZHANG Xueyong;LI Jiali;ZHAO Yue;MAO Yifei(School of Mathematics and Physics,Anhui Jianzhu University,Hefei 230601,China;Key Laboratory of Architectural Acoustic Environment of Anhui Higher Education Institutes,Hefei 230601,China;Institute of Acoustics,Anhui Jianzhu University,Hefei 230601,China)

机构地区：[1]安徽建筑大学数理学院,安徽合肥230601 [2]安徽省建筑声环境重点实验室,安徽合肥230601 [3]安徽建筑大学声学研究所,安徽合肥230601

出　　处：《安徽建筑大学学报》2023年第1期70-75,共6页Journal of Anhui Jianzhu University

基　　金：国家自然科学基金项目(61471003);国家重点研发计划项目(2018YFB2003801);安徽省高校省级自然科学研究项目(KJ2020A0484);安徽省高校学科拔尖人才学术资助项目(gxbjZD2021066)。

摘　　要：球形传声器阵列可有效重建三维空间声场,本文利用空心球形传声器阵列结合等效源方法开展声场重建研究。首先介绍球面等效源法声场重建方法,然后引入压缩感知算法,进一步提出基于压缩感知的球面等效源声场重建方法,最后利用单极子源对两种方法进行声场重建数值仿真,分别探讨声源频率、声源位置、信噪比以及重建面半径对声场重建精度的影响。结果表明,基于空心球阵列的球面等效源法和压缩感知球面等效源法均可实现声场重建,压缩感知球面等效源法声场重建精度优于球面等效源法。Spherical microphone array can effectively reconstruct a three-dimensional sound field. In this paper,a spherical microphone array combined with the equivalent source method is used to reconstruct the sound field. The reconstruction method of sound field by spherical equivalent source method(S-ESM) is presented,and is compared to the spherical equivalent source method based on compressive sensing(CS2-ESM). The numerical simulation of the sound field reconstruction using monopole source is carried out with both methods to discuss the influences of source frequency,source location,signal to noise ratio and reconstructed spherical radius on the accuracy of sound field reconstruction. The results show that both methods can reconstruct the sound field,and the CS2-ESM has better accuracy than the S-ESM.

关 键 词：球形传声器阵列 压缩感知 球面等效源法 近场声全息 

分 类 号：TB525[理学—物理]