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Classification of vocalizations of killer whales using dynamic time warping

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Author(s)

J C Brown, A Hodgins-Davis, P J O Miller

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Abstract

A large number of killer whale sounds have recently been classified perceptually into Call Types. [A. Hodgins-Davis, thesis, Wellesley College (2004)]. The repetition rate of the pulsed component of five or more examples of each call type has been calculated using a modified form of the FFT based comb-filter method. A dissimilarity or distance matrix for these sounds was calculated using dynamic time warping to compare their melodic contours. These distances were transformed into a component space using multidimensional scaling and the resulting points were clustered with a kmeans algorithm. In grouping 57 sounds into 9 call types, a single discrepancy between the perceptual and the automated methods occurred. (c) 2006 Acoustical Society of America.

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Details

Original languageEnglish
Pages (from-to)EL34-EL40
Number of pages7
JournalJournal of the Acoustical Society of America - Express Letters
Volume119
Issue number3
DOIs
Publication statusPublished - Mar 2006

    Research areas

  • ORCINUS-ORCA

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