47-channel burst-mode recording hydrophone system enabling measurements of the dynamic echolocation behavior of free-swimming dolphins

Detailed echolocation behavior studies on free-swimming dolphins require a measurement system that incorporates multiple hydrophones (often >16). However, the high data flow rate of previous systems has limited their usefulness since only minute long recordings have been manageable. To address th...

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Bibliographic Details
Published inThe Journal of the Acoustical Society of America Vol. 126; no. 3; p. 959
Main Authors Starkhammar, Josefin, Amundin, Mats, Nilsson, Johan, Jansson, Tomas, Kuczaj, Stan A, Almqvist, Monica, Persson, Hans W
Format Journal Article
LanguageEnglish
Published United States 01.09.2009
Subjects
Acoustics - instrumentation
Animals
Behavior, Animal
Bottle-Nosed Dolphin - physiology
Echolocation
Electronics - instrumentation
Exploratory Behavior
Swimming
Time Factors
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Summary:Detailed echolocation behavior studies on free-swimming dolphins require a measurement system that incorporates multiple hydrophones (often >16). However, the high data flow rate of previous systems has limited their usefulness since only minute long recordings have been manageable. To address this problem, this report describes a 47-channel burst-mode recording hydrophone system that enables highly resolved full beamwidth measurements on multiple free-swimming dolphins during prolonged recording periods. The system facilitates a wide range of biosonar studies since it eliminates the need to restrict the movement of animals in order to study the fine details of their sonar beams.
ISSN:1520-8524
DOI:10.1121/1.3184536