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. (C) 2009 Acoustical Society of America. [DOI: 10.1121/1.3184536]
Journal of the Acoustical Society of America
Kuczaj, S. A.,
Persson, H. W.
(2009). 47-Channel Burst-Mode Recording Hydrophone System Enabling Measurements of the Dynamic Echolocation Behavior of Free-Swimming Dolphins. Journal of the Acoustical Society of America, 126(3), 959-962.
Available at: http://aquila.usm.edu/fac_pubs/1192