Acoustic localization is a promising method to passively observe vocal animal species, but remains difficult and time consuming to employ. To reduce the labor intensity and impact of deployment, an acoustic localization system has been developed consisting of battery powered wireless sensor nodes. The system also has the ability to perform an acoustic self-survey, which compares favorably in accuracy to global positioning system survey methods, especially in environments such as forest. The self-survey and localization accuracy of the system was tested in the neotropical rainforest of Chiapas, Mexico. A straight-forward and robust correlation sum localization computation method was utilized and is described in detail. Both free-ranging wild antbird songs and songs played from a speaker were localized with mean errors of 0.199 m and 0.445 m, respectively. Finally, additional tests utilizing only a short segment of each song or a subset of sensor nodes were performed and found to minimally affect localization accuracy. The use of a wireless sensor network for acoustic localization of animal vocalizations offers greater ease and flexibility of deployment than wired microphone arrays without sacrificing accuracy.
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July 2010
July 16 2010
Acoustic localization of antbirds in a Mexican rainforest using a wireless sensor network Available to Purchase
Travis C. Collier;
Travis C. Collier
a)
Department of Ecology and Evolutionary Biology,
University of California Los Angeles
, 621 Charles Young Drive South, Los Angeles, California 90025
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Alexander N. G. Kirschel;
Alexander N. G. Kirschel
Department of Ecology and Evolutionary Biology,
University of California Los Angeles
, 621 Charles Young Drive South, Los Angeles, California 90025
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Charles E. Taylor
Charles E. Taylor
Department of Ecology and Evolutionary Biology,
University of California Los Angeles
, 621 Charles Young Drive South, Los Angeles, California 90025
Search for other works by this author on:
Travis C. Collier
a)
Department of Ecology and Evolutionary Biology,
University of California Los Angeles
, 621 Charles Young Drive South, Los Angeles, California 90025
Alexander N. G. Kirschel
Department of Ecology and Evolutionary Biology,
University of California Los Angeles
, 621 Charles Young Drive South, Los Angeles, California 90025
Charles E. Taylor
Department of Ecology and Evolutionary Biology,
University of California Los Angeles
, 621 Charles Young Drive South, Los Angeles, California 90025a)
Author to whom correspondence should be addressed. Electronic address: [email protected]
J. Acoust. Soc. Am. 128, 182–189 (2010)
Article history
Received:
July 07 2009
Accepted:
April 09 2010
Citation
Travis C. Collier, Alexander N. G. Kirschel, Charles E. Taylor; Acoustic localization of antbirds in a Mexican rainforest using a wireless sensor network. J. Acoust. Soc. Am. 1 July 2010; 128 (1): 182–189. https://doi.org/10.1121/1.3425729
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