Physical Analysis of a Biomimetic Microphone With a Central-Supported (C-S) Circular Diaphragm for Sound Source Localization

Author

Chen, Chien-Chang ; Cheng, Yu-Ting

Author_Institution

Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan

Volume

12

Issue

5

fYear

2012

fDate

5/1/2012 12:00:00 AM

Firstpage

1504

Lastpage

1512

Abstract

This paper presents a physical analysis of the biomimetic microphone designed with a central-supported (C-S) diaphragm for the sound source localization. A clover-stem-like C-S design is proposed and achieving 47% improvement of net diaphragm displacement in comparison with the conventional C-S diaphragm design. The new design can effectively not only compensate undesired deformation of sensing diaphragm due to gravity and residual stresses but also make the diaphragm more flexible for better sound pressure sensitivity.

Keywords

acoustic radiators; biomimetics; diaphragms; microphones; biomimetic microphone; central supported circular diaphragm; clover-stem-like C-S design; diaphragm displacement; gravity; residual stress; sound pressure sensitivity; sound source localization; Acoustic beams; Auditory system; Biomembranes; Damping; Microphones; Q factor; Sensors; Biomimetic microphone; MEMS microphone; central floating joint; central-supported diaphragm; clover; hybrid; parasitoid fly; quality factor; sound source localization; squeeze film air damping effect;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2011.2173931

Filename

6062636