阵元随机均匀分布球面阵列联合噪声源定位方法

张揽月; 丁丹丹; 杨德森; 时胜国; 朱中锐

doi:10.7498/aps.66.014303

摘要

基于球面传声器阵列的噪声源定位方法，设计加工了阵元随机均匀分布64元球面传声器阵列，研究了球面近场声全息和球谐函数模态展开聚焦波束形成联合噪声源定位识别方法，对算法的性能进行了仿真分析，并利用球面传声器阵列进行了噪声源的定位识别试验.研究表明，阵元随机均匀分布球面阵列具有全空间稳定的目标定位性能，球面近场声全息对低频近距离声源具有较高的定位精度，球谐函数模态展开聚焦波束形成对高频远距离声源具有较高的定位精度，将两种方法联合进行声源的定位识别，可以在较小孔径的球面阵列和较少阵元的条件下，在宽频带范围内获得对目标声源良好的定位性能.

关键词:

Abstract

With the development of techlology, noise controlling has received wide attention in recent years. Noise source identification is the key step for noise controlling. Spherical microphone array, which can locate the noise source of arbitrary direction in three-dimensional space, has been widely used for noise source identification in recent years. Conventional methods of locating noise source include spherical near field acoustic holography and spherical focused beamforming. The acoustic quantities are reconstructed by using spherical near field acoustic holography method to realize the noise source identification, while the noise source can also be located by using focused beamforming based on spherical harmonic wave decomposition. However, both these methods have their own limitations when they are used in identifying the noise source. Spherical near field acoustic holography has low resolution at high frequency with a far distance from noise source to measurement array for noise source identification, whereas the spherically focused beamforming has low localization resolution at low frequency. Noise source identification is discussed here, and a 64-element microphone spherical array with randomly uniform distribution of elements is designed. The combination methods of noise source identification by using spherical near field acoustic holography and mode decomposition focused beamforming are investigated. The performance of the proposed combination method is simulated, and an experiment on noise source identification is carried out based on the designed spherical microphone array to test the validity of proposed method. Research results show that the high-resolution noise source identification can be achieved by using near field acoustic holography when reconstruction frequency is 100-1000 Hz with a distance 0.3-0.45 m from noise source to the center of spherical array, while high resolution of noise source localization can be achieved by using spherical wave decomposition beamforming when signal frequency is 1000-5000 Hz with a distance 0.5-3 m from noise source to the center of spherical array. Spherical array with random uniform distribution of elements maintains stable identification ability in all bearings. The spherical near field acoustic holography has high-resolution distinguishing ability in near field and at low frequency, while the focused beamforming method has high-resolution distinguishing ability in far field and at high frequency. Therefore the noise source can be efficiently identified by using the proposed combination method of near field holography and focused beamforming with less elements and small aperture spherical microphone array.

Keywords:

作者及机构信息

1.
哈尔滨工程大学, 水声技术重点实验室, 哈尔滨 150001;

2.
哈尔滨工程大学水声工程学院, 哈尔滨 150001

通信作者: 朱中锐, zhuzhongrui@hrbeu.edu.cn

基金项目: 国家自然科学基金（批准号：11674075，11404076）资助的课题.

Authors and contacts

1.
Science and Technology on Underwater Acoustic Laboratory, Harbin Engineering University, Harbin 150001, China;

2.
College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China

Corresponding author: Zhu Zhong-Rui, zhuzhongrui@hrbeu.edu.cn

Funds: Project supported by the National Natural Science Foundation of China（Grant Nos. 11674075, 11404076).

参考文献

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[2]	Maynard J D, Williams E G, Lee Y 1985 J. Acoust. Soc. Am. 78 1395
[3]	Lee J C 1996 Appl. Acoust. 48 85
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[9]	Du L 2011 M. S. Dissertation (Zhenjiang:Zhejiang Sci-Tech University)（in Chinese)[杜亮2011硕士学位论文(浙江:浙江理工大学)]
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[12]	Etan F, Boaz R 2009 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics New Paltz, NY, October 2009 p169
[13]	Hald J 2013 SAE Int. J. Passeng. Cars-Mech. Syst. 6 1334
[14]	Lin Z B, Xu B L 2006 J. Nanjing Univ.（Nat. Sci.) 42 384
[15]	Tang Y Q, Huang Q H, Fang Y 2010 Signal Process. 26 655(in Chinese)[汤永清, 黄青华, 方勇2010信号处理26 654]
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[17]	Tang C 2013 M. S. Dissertation (Hefei:Hefei University of Technology)（in Chinese)[汤辰2013硕士学位论文(合肥:合肥工业大学)]
[18]	Zhou Y N 2014 M. S. Dissertation（Chongqing:Chongqing University)（in Chinese)[周亚男2014硕士学位论文(重庆:重庆大学)]
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[20]	Xin Y, Zhang Y B, Bi C X 2010 Acta Metrolog. Sin. 31 537(in Chinese)[辛雨, 张永斌, 毕传兴2010计量学报31 537]

施引文献

[1]	Jens M, Gary E 2002 IEEE International Conference on Acoustics Orlando, FL, United States, May, 2002 p1781
[2]	Maynard J D, Williams E G, Lee Y 1985 J. Acoust. Soc. Am. 78 1395
[3]	Lee J C 1996 Appl. Acoust. 48 85
[4]	Li M Z, Lu H C, Jin J M 2015 Acta Acust. 40 695(in Chinese)[李敏宗, 卢奂采, 金江明2015声学学报40 695]
[5]	Yu F, Chen J, Chen X Z 2003 J. Vib. Eng. 16 85(in Chinese)[于飞, 陈剑, 陈心昭2003振动工程学报16 85]
[6]	Finn J, Guillermo M P 2011 J. Acoust. Soc. Am. 129 3461
[7]	Song Y L, Lu H C, Jin J M 2014 Acta Phys. Sin. 63 194305 （in Chinese)[宋玉来, 卢奂采, 金江明2014 63 194305]
[8]	Ling M Z, Lu H C, Jin J M 2015 J. Vib. Eng. Chin. J. Sens. Actuat. 281459(in Chinese)[李敏宗, 卢奂采, 金江明2015传感技术学报28 1459]
[9]	Du L 2011 M. S. Dissertation (Zhenjiang:Zhejiang Sci-Tech University)（in Chinese)[杜亮2011硕士学位论文(浙江:浙江理工大学)]
[10]	Boaz R 2004 J. Acoust. Soc. Am. 116 2149
[11]	Etan F, Boaz R 2008 Proceedings of IEEE Convention of Acoustics Las Vegas, March 31-April 4, 2008 p5272
[12]	Etan F, Boaz R 2009 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics New Paltz, NY, October 2009 p169
[13]	Hald J 2013 SAE Int. J. Passeng. Cars-Mech. Syst. 6 1334
[14]	Lin Z B, Xu B L 2006 J. Nanjing Univ.（Nat. Sci.) 42 384
[15]	Tang Y Q, Huang Q H, Fang Y 2010 Signal Process. 26 655(in Chinese)[汤永清, 黄青华, 方勇2010信号处理26 654]
[16]	Chu Z G, Zhou Y N, Wang G J, He Y S 2012 Trans. Chin. Soc. Agric. Eng. 28 146 （in Chinese)[褚志刚, 周亚男, 王光建, 贺岩松2012农业工程学报28 146]
[17]	Tang C 2013 M. S. Dissertation (Hefei:Hefei University of Technology)（in Chinese)[汤辰2013硕士学位论文(合肥:合肥工业大学)]
[18]	Zhou Y N 2014 M. S. Dissertation（Chongqing:Chongqing University)（in Chinese)[周亚男2014硕士学位论文(重庆:重庆大学)]
[19]	Zhou X H 2008 Ph. D. Dissertation (Jilin:Jilin University)（in Chinese)[周晓华2008博士学位论文(吉林:吉林大学)]
[20]	Xin Y, Zhang Y B, Bi C X 2010 Acta Metrolog. Sin. 31 537(in Chinese)[辛雨, 张永斌, 毕传兴2010计量学报31 537]

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