Design of UAV-embedded microphone array system for sound source localization in outdoor environments

Kotaro Hoshiba, Kai Washizaki, Mizuho Wakabayashi, Takahiro Ishiki, Makoto Kumon, Yoshiaki Bando, Daniel Gabriel, Kazuhiro Nakadai, Hiroshi G. Okuno

    Research output: Contribution to journalArticle

    39 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Article number2535
    JournalSensors (Switzerland)
    Volume17
    Issue number11
    DOIs
    Publication statusPublished - 2017 Nov 3

    Keywords

    • Multiple signal classification
    • Outdoorenvironment measurement
    • Real-time measurement
    • Robot audition
    • Sound source localization
    • Unmanned aerial vehicle

    ASJC Scopus subject areas

    • Analytical Chemistry
    • Atomic and Molecular Physics, and Optics
    • Biochemistry
    • Instrumentation
    • Electrical and Electronic Engineering

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  • Cite this

    Hoshiba, K., Washizaki, K., Wakabayashi, M., Ishiki, T., Kumon, M., Bando, Y., Gabriel, D., Nakadai, K., & Okuno, H. G. (2017). Design of UAV-embedded microphone array system for sound source localization in outdoor environments. Sensors (Switzerland), 17(11), [2535]. https://doi.org/10.3390/s17112535