Recognition of in-field frog chorusing using Bayesian nonparametric microphone array processing

Yoshiaki Bandog, Takuma Otsuka, Ikkyu Aihara, Hiromitsu Awano, Katsutoshi Itoyama, Kazuyoshi Yoshii, Hiroshi G. Okuno

    研究成果: Conference contribution

    2 被引用数 (Scopus)

    抄録

    In this paper, we exploit Bayesian nonparametric microphone array processing (BNP-MAP) for analyzing the spatio- Temporal patterns of the frog chorus. Such analysis in real environments is made more difficult due to unpredictable sound sources including calls of various species of animals. An application of conventional signal processing algorithms has been difficult because these algorithms usually require the number of sound sources in advance. BNP-MAP is developed to cope with auditory uncertainties such as reverberation or unknown number of sounds by using a unified model based on Bayesian nonparametrics. We exploit BNP-MAP for analyzing the sound data of 20 minutes captured by a 7-channel microphone array in a paddy rice field in Oki Island, Japan, and revealed that two individuals of Schlegel's green tree frog {Rhacophorus schlegelii) called alternately with anti-phase. This result is compared with the video data captured by a video camera with 18 units of sound-imaging devices called Firefly deployed along the bank of the rice field. The auditory result provides more detailed patterns of the frog chorus in higher temporal resolutions. This higher resolution enables to analyze fine temporal structures of the frog calls. For example, BNP-MAP reveals the trill-like calling pattern of R. schlegelii.

    本文言語English
    ホスト出版物のタイトルAAAI Workshop - Technical Report
    出版社AI Access Foundation
    ページ2-6
    ページ数5
    WS-15-06
    ISBN(印刷版)9781577357179
    出版ステータスPublished - 2015
    イベント29th AAAI Conference on Artificial Intelligence, AAAI 2015 - Austin, United States
    継続期間: 2015 1 252015 1 30

    Other

    Other29th AAAI Conference on Artificial Intelligence, AAAI 2015
    国/地域United States
    CityAustin
    Period15/1/2515/1/30

    ASJC Scopus subject areas

    • 工学(全般)

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