Distinctions in sound patterns of calls by killer whales (Orcinus Orca) from analysis of computer sound features
Watkins, William A.
Daher, Mary Ann
DiMarzio, Nancy A.
MetadataShow full item record
Calls of killer whales, Orcinus orca, were analyzed using computed sound features to classify sound patterns and identify call similarties. Calls were classified and separated according to the podfamily group within clans identified previously by John Ford (U. BC) in the Vancouver whale populations. Acoustic characteristics of the same call type from different individuals were extremely similar, so that discriminating these different sounds was the goal. The WHOI AcouStat program and associated database systems were used to define numerical statistics for each call, and then, these were compared to sort and classify the sounds. The results were in agreement with Ford's descriptions of the calls derived from visual inspection of sound spectrograms of calls. The classification analyses demonstrated that although specific shared calls from different killer whales were much alike, they could be sorted by the pod/subpod of the whales producing the calls. A typical analysis, for example, of the N4 call from Clan A (Vancouver, BC), classified 97% of the calls correctly according to the pod/family of the whales producing the calls. Remaining calls were variant, and likely a result of individual differences in call sounds. Similar classification analysis were tested on unsorted, unalyzed recordings from different populations of whales, and these too could be distinguished, with 98.5% correct separation of the calls.
Suggested CitationTechnical Report: Watkins, William A., Daher, Mary Ann, DiMarzio, Nancy A., Reppucci, Gina, "Distinctions in sound patterns of calls by killer whales (Orcinus Orca) from analysis of computer sound features", 1998-03, DOI:10.1575/1912/263, https://hdl.handle.net/1912/263
Showing items related by title, author, creator and subject.
Mehta, Amee V.; Allen, Judith M.; Constantine, Rochelle; Garrigue, Claire; Jann, Beatrice; Jenner, Curt; Marx, Marilyn K.; Matkin, Craig O.; Mattila, David K.; Minton, Gianna; Mizroch, Sally A.; Olavarría, Carlos; Robbins, Jooke; Russell, Kirsty G.; Seton, Rosemary E.; Steiger, Gretchen H.; Víkingsson, Gísli A.; Wade, Paul R.; Witteveen, Briana H.; Clapham, Phillip J. (Inter-Research, 2007-10-25)Certain populations of killer whales Orcinus orca feed primarily or exclusively on marine mammals. However, whether or not baleen whales represent an important prey source for killer whales is debatable. A hypothesis by ...
Orchestration : the movement and vocal behavior of free-ranging Norwegian killer whales (Orcinus orca) Shapiro, Ari D. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2008-06)Studying the social and cultural transmission of behavior among animals helps to identify patterns of interaction and information content flowing between individuals. Killer whales are likely to acquire traits culturally ...
Comparing call-based versus subunit-based methods for categorizing Norwegian killer whale, Orcinus orca, vocalizations Shapiro, Ari D.; Tyack, Peter L.; Seneff, Stephanie (2010-08-13)Students of animal communication face significant challenges when deciding how to categorise calls into subunits, calls, and call series. Here, we use algorithms designed to parse human speech to test different approaches ...