Sound direction sensor with an acoustic channel

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

doi:10.1109/MEMSYS.2010.5442321

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 proceeding › Conference contribution

6 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 language	English
Title of host publication	MEMS 2010 - The 23rd IEEE International Conference on Micro Electro Mechanical Systems, Technical Digest
Pages	655-658
Number of pages	4
DOIs	https://doi.org/10.1109/MEMSYS.2010.5442321
Publication status	Published - 2010 Jun 1
Externally published	Yes
Event	23rd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2010 - Hong Kong, China Duration: 2010 Jan 24 → 2010 Jan 28

Publication series

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

Other

Other	23rd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2010
Country/Territory	China
City	Hong Kong
Period	10/1/24 → 10/1/28

ASJC Scopus subject areas

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

Access to Document

10.1109/MEMSYS.2010.5442321

Cite this

Nguyen, M. D., Inaba, A., Suzuki, A., Takahashi, H., Iwase, E., Matsumoto, K., & Shimoyama, I. (2010). Sound direction sensor with an acoustic channel. In MEMS 2010 - The 23rd IEEE International Conference on Micro Electro Mechanical Systems, Technical Digest (pp. 655-658). [5442321] (Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)). https://doi.org/10.1109/MEMSYS.2010.5442321

Sound direction sensor with an acoustic channel. / Nguyen, Minh Dung; Inaba, Akira; Suzuki, Akira et al.
MEMS 2010 - The 23rd IEEE International Conference on Micro Electro Mechanical Systems, Technical Digest. 2010. p. 655-658 5442321 (Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Nguyen, MD, Inaba, A, Suzuki, A, Takahashi, H, Iwase, E, Matsumoto, K & Shimoyama, I 2010, Sound direction sensor with an acoustic channel. in MEMS 2010 - The 23rd IEEE International Conference on Micro Electro Mechanical Systems, Technical Digest., 5442321, Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS), pp. 655-658, 23rd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2010, Hong Kong, China, 10/1/24. https://doi.org/10.1109/MEMSYS.2010.5442321

Nguyen MD, Inaba A, Suzuki A, Takahashi H, Iwase E, Matsumoto K et al. Sound direction sensor with an acoustic channel. In MEMS 2010 - The 23rd IEEE International Conference on Micro Electro Mechanical Systems, Technical Digest. 2010. p. 655-658. 5442321. (Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)). doi: 10.1109/MEMSYS.2010.5442321

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AU - Matsumoto, Kiyoshi

AU - Shimoyama, Isao

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AB - 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.

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Sound direction sensor with an acoustic channel

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