Sound source localization based on directivity of MEMS microphones

Author

Wu, Xiaoming ; Ren, Tianling ; Liu, Litian

Author_Institution

Inst. of Microelectron., Tsinghua Univ., Beijing, China

Volume

3

fYear

2004

fDate

18-21 Oct. 2004

Firstpage

1884

Abstract

MEMS technology based microphones have gradually been commercialized. These microphones have many virtues of small size, high sensitivity, flexible packaging, and so on. The paper proposes a novel and simple method for sound source localization using the directivity of MEMS microphones. The multi-microphone structure, signal processing algorithm, and system error depression technology of the method are presented. Theoretically, the maximum sound source localization angle error is 2.1° if signal acquirement frequency is 30 times the sound wave frequency.

Keywords

acoustic signal detection; acoustic signal processing; micromechanical devices; microphone arrays; source separation; MEMS microphone directivity; multi-microphone structure; sensitivity; signal acquirement; signal processing algorithm; sound source localization; system error depression technology; Automatic control; Cameras; Cardiology; Commercialization; Frequency; Microelectronics; Micromechanical devices; Microphone arrays; Optical films; Packaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuits Technology, 2004. Proceedings. 7th International Conference on

Print_ISBN

0-7803-8511-X

Type

conf

DOI

10.1109/ICSICT.2004.1435204

Filename

1435204