Title :
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
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;
Conference_Titel :
Solid-State and Integrated Circuits Technology, 2004. Proceedings. 7th International Conference on
Print_ISBN :
0-7803-8511-X
DOI :
10.1109/ICSICT.2004.1435204
