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Open AccessArticle

Design of UAV-Embedded Microphone Array System for Sound Source Localization in Outdoor Environments

1
Department of Systems and Control Engineering, School of Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
2
Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
3
Graduate School of Informatics, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-8501, Japan
4
Honda Research Institute Japan Co., Ltd., 8-1 Honcho, Wako, Saitama 351-0188, Japan
5
Graduate Program for Embodiment Informatics, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
*
Author to whom correspondence should be addressed.
This is the extended version of Development of Microphone-Array-Embedded UAV for Search and Rescue Task, Kazuhiro Nakadai, Makoto Kumon, Hiroshi G. Okuno, Kotaro Hoshiba, Mizuho Wakabayashi, Kai Washizaki, Takahiro Ishiki, Daniel Gabriel, Yoshiaki Bando, Takayuki Morito, Ryosuke Kojima, Osamu Sugiyama, IEEE/RSJ International Conference on Intelligent Robots and Systems, Vancouver, BC, Canada, 24–28 September 2017.
Current address: LIXIL Corporation, 2-1-1 Ojima, Koto-ku, Tokyo 136-8535, Japan.
Sensors 2017, 17(11), 2535; https://doi.org/10.3390/s17112535
Received: 7 October 2017 / Revised: 30 October 2017 / Accepted: 30 October 2017 / Published: 3 November 2017
(This article belongs to the Special Issue UAV or Drones for Remote Sensing Applications)
In search and rescue activities, unmanned aerial vehicles (UAV) should exploit sound information to compensate for poor visual information. This paper describes the design and implementation of a UAV-embedded microphone array system for sound source localization in outdoor environments. Four critical development problems included water-resistance of the microphone array, efficiency in assembling, reliability of wireless communication, and sufficiency of visualization tools for operators. To solve these problems, we developed a spherical microphone array system (SMAS) consisting of a microphone array, a stable wireless network communication system, and intuitive visualization tools. The performance of SMAS was evaluated with simulated data and a demonstration in the field. Results confirmed that the SMAS provides highly accurate localization, water resistance, prompt assembly, stable wireless communication, and intuitive information for observers and operators. View Full-Text
Keywords: robot audition; sound source localization; multiple signal classification; outdoor-environment measurement; real-time measurement; unmanned aerial vehicle robot audition; sound source localization; multiple signal classification; outdoor-environment measurement; real-time measurement; unmanned aerial vehicle
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MDPI and ACS Style

Hoshiba, K.; Washizaki, K.; Wakabayashi, M.; Ishiki, T.; Kumon, M.; Bando, Y.; Gabriel, D.; Nakadai, K.; Okuno, H.G. Design of UAV-Embedded Microphone Array System for Sound Source Localization in Outdoor Environments. Sensors 2017, 17, 2535. https://doi.org/10.3390/s17112535

AMA Style

Hoshiba K, Washizaki K, Wakabayashi M, Ishiki T, Kumon M, Bando Y, Gabriel D, Nakadai K, Okuno HG. Design of UAV-Embedded Microphone Array System for Sound Source Localization in Outdoor Environments. Sensors. 2017; 17(11):2535. https://doi.org/10.3390/s17112535

Chicago/Turabian Style

Hoshiba, Kotaro; Washizaki, Kai; Wakabayashi, Mizuho; Ishiki, Takahiro; Kumon, Makoto; Bando, Yoshiaki; Gabriel, Daniel; Nakadai, Kazuhiro; Okuno, Hiroshi G. 2017. "Design of UAV-Embedded Microphone Array System for Sound Source Localization in Outdoor Environments" Sensors 17, no. 11: 2535. https://doi.org/10.3390/s17112535

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