Journal of the Acoustical Society of America, Vol. 117, No. 3, March 2005. pp. 1005-1008.
Title: A beamforming video recorder for integrated observations of dolphin behavior and vocalizations (L)
Authors: Keenan R. Ball and John R. Buck

In this Letter we describe a beamforming video recorder consisting of a video camera at the center of a 16 hydrophone array. A broadband frequency-domain beamforming algorithm is used to estimate the azimuth and elevation of each detected sound. These estimates are used to generate a visual cue indicating the location of the sound source within the video recording, which is synchronized to the acoustic data. The system provided accurate results in both lab calibrations and a field test. The system allows researchers to correlate the acoustic and physical behaviors of marine mammals during studies of social interactions.

Back to Publications Page