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Sound source localization based on directivity of MEMS microphones

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3 Author(s)
Xiaoming Wu ; Inst. of Microelectron., Tsinghua Univ., Beijing, China ; Tianling Ren ; Litian Liu

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.

Published in:

Solid-State and Integrated Circuits Technology, 2004. Proceedings. 7th International Conference on  (Volume:3 )

Date of Conference:

18-21 Oct. 2004