Acoustic Source Localization via Subspace Based Method Using Small Aperture MEMS Arrays

Acoustic Source Localization via Subspace Based Method Using Small Aperture MEMS Arrays

Small aperture microphone arrays provide many advantages for portable devices and hearing aid equipment. In this paper, a subspace based localization method is proposed for acoustic source using small aperture arrays. The effects of array aperture on localization are analyzed by using array response...

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Main Authors: Xin Zhang, Enliang Song, JingChang Huang, Huawei Liu, YuePeng Wang, Baoqing Li, Xiaobing Yuan
Format: Article
Language:English
Published: Hindawi Limited 2014-01-01
Series:Journal of Sensors
Online Access:http://dx.doi.org/10.1155/2014/675726
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spelling doaj-2bc510a26520462bb1a82d3edabeef772020-11-24T23:41:42ZengHindawi LimitedJournal of Sensors1687-725X1687-72682014-01-01201410.1155/2014/675726675726Acoustic Source Localization via Subspace Based Method Using Small Aperture MEMS ArraysXin Zhang0Enliang Song1JingChang Huang2Huawei Liu3YuePeng Wang4Baoqing Li5Xiaobing Yuan6Science and Technology on Micro-System Laboratory, Shanghai Institute of Microsystem and Information Technology, CAS, Shanghai 200050, ChinaScience and Technology on Micro-System Laboratory, Shanghai Institute of Microsystem and Information Technology, CAS, Shanghai 200050, ChinaScience and Technology on Micro-System Laboratory, Shanghai Institute of Microsystem and Information Technology, CAS, Shanghai 200050, ChinaScience and Technology on Micro-System Laboratory, Shanghai Institute of Microsystem and Information Technology, CAS, Shanghai 200050, ChinaScience and Technology on Micro-System Laboratory, Shanghai Institute of Microsystem and Information Technology, CAS, Shanghai 200050, ChinaScience and Technology on Micro-System Laboratory, Shanghai Institute of Microsystem and Information Technology, CAS, Shanghai 200050, ChinaScience and Technology on Micro-System Laboratory, Shanghai Institute of Microsystem and Information Technology, CAS, Shanghai 200050, ChinaSmall aperture microphone arrays provide many advantages for portable devices and hearing aid equipment. In this paper, a subspace based localization method is proposed for acoustic source using small aperture arrays. The effects of array aperture on localization are analyzed by using array response (array manifold). Besides array aperture, the frequency of acoustic source and the variance of signal power are simulated to demonstrate how to optimize localization performance, which is carried out by introducing frequency error with the proposed method. The proposed method for 5 mm array aperture is validated by simulations and experiments with MEMS microphone arrays. Different types of acoustic sources can be localized with the highest precision of 6 degrees even in the presence of wind noise and other noises. Furthermore, the proposed method reduces the computational complexity compared with other methods.http://dx.doi.org/10.1155/2014/675726
collection DOAJ
language English
format Article
sources DOAJ
author Xin Zhang
Enliang Song
JingChang Huang
Huawei Liu
YuePeng Wang
Baoqing Li
Xiaobing Yuan
spellingShingle Xin Zhang
Enliang Song
JingChang Huang
Huawei Liu
YuePeng Wang
Baoqing Li
Xiaobing Yuan
Acoustic Source Localization via Subspace Based Method Using Small Aperture MEMS Arrays
Journal of Sensors
author_facet Xin Zhang
Enliang Song
JingChang Huang
Huawei Liu
YuePeng Wang
Baoqing Li
Xiaobing Yuan
author_sort Xin Zhang
title Acoustic Source Localization via Subspace Based Method Using Small Aperture MEMS Arrays
title_short Acoustic Source Localization via Subspace Based Method Using Small Aperture MEMS Arrays
title_full Acoustic Source Localization via Subspace Based Method Using Small Aperture MEMS Arrays
title_fullStr Acoustic Source Localization via Subspace Based Method Using Small Aperture MEMS Arrays
title_full_unstemmed Acoustic Source Localization via Subspace Based Method Using Small Aperture MEMS Arrays
title_sort acoustic source localization via subspace based method using small aperture mems arrays
publisher Hindawi Limited
series Journal of Sensors
issn 1687-725X
1687-7268
publishDate 2014-01-01
description Small aperture microphone arrays provide many advantages for portable devices and hearing aid equipment. In this paper, a subspace based localization method is proposed for acoustic source using small aperture arrays. The effects of array aperture on localization are analyzed by using array response (array manifold). Besides array aperture, the frequency of acoustic source and the variance of signal power are simulated to demonstrate how to optimize localization performance, which is carried out by introducing frequency error with the proposed method. The proposed method for 5 mm array aperture is validated by simulations and experiments with MEMS microphone arrays. Different types of acoustic sources can be localized with the highest precision of 6 degrees even in the presence of wind noise and other noises. Furthermore, the proposed method reduces the computational complexity compared with other methods.
url http://dx.doi.org/10.1155/2014/675726
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