| Using click change detection to modify cluster analysis for acoustically identifying individual sperm whales with changing aspect. | |
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MedLine Citation:
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PMID: 20331088 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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As described by Mohl et al. J. Acoust. Soc. Am. 114, 1143-1154 (2003)], the acoustic properties of the received clicks of a turning sperm whale change as the whale rotates. These changing properties (the time signal, the discrete Fourier transform, and the discrete wavelet transform are studied here) confound cluster analysis attempts to identify individual whales by grouping like clicks in classes representing individuals. The 4th International Workshop on Detection, Classification and Localization of Marine Mammals Using Passive Acoustics has associated workshop data containing a sequence of sperm whale clicks which most likely come from the same individual (as shown by careful manual click analysis) turning with respect to the acoustic recording buoy. The time domain sequence of clicks indicates that the angle of a line from the head of the whale to the buoy appears to be changing from greater than 90 deg to less than 90 deg and back again. Time evolution and click change detection are applied to follow the whale and give correct automatic identification. This analysis is incorporated into the clustering process. [Research supported by ONR and SPAWAR.]. |
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Authors:
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George E Ioup; Juliette W Ioup; Lisa A Pflug; Christopher O Tiemann; Natalia A Sidorovskaia |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 127 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-03-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
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Languages: eng Pagination: 2004 Citation Subset: IM |
Affiliation:
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Dept. of Phys., Univ. of New Orleans, New Orleans, LA 70148, geioup@uno.eduUniv. of Texas at Austin, Austin, TXUniv. of Louisiana at Lafayette, Lafayette, LA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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