Sound direction sensor with an acoustic channel

Minh Dung Nguyen, Akira Inaba, Akira Suzuki, Hidetoshi Takahashi, Eiji Iwase, Kiyoshi Matsumoto, Isao Shimoyama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

This paper reports on a method for estimating direction of a sound with one directional acoustic sensor. Inspired by the two input structure of bushcricket ear, our sensor was designed to have an acoustic channel and a micro piezo-resistive cantilever. The radiated sound acts simultaneously on the external and on the inner surface of the cantilever. As the result, the directionality of our sensor varies with the frequency of incident sound. The sound direction was estimated by using directional responses of the sensor at multiple frequencies so that it does not require either angle scanning or microphone arrays. We demonstrated that this method enables the sound direction to be estimated with the average error of 4 degrees in laboratory experiments.

Original languageEnglish
Title of host publicationMEMS 2010 - The 23rd IEEE International Conference on Micro Electro Mechanical Systems, Technical Digest
Pages655-658
Number of pages4
DOIs
Publication statusPublished - 2010 Jun 1
Externally publishedYes
Event23rd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2010 - Hong Kong, China
Duration: 2010 Jan 242010 Jan 28

Publication series

NameProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
ISSN (Print)1084-6999

Conference

Conference23rd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2010
CountryChina
CityHong Kong
Period10/1/2410/1/28

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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