Localization of soniferous fish using a sparse hydrophone array and conventional steered response power method

ECU Author/Contributor (non-ECU co-authors, if there are any, appear on document)

Phillip M Deville (Creator)

Institution

East Carolina University (ECU )

Web Site: http://www.ecu.edu/lib/

Abstract: "A sparse seven-channel hydrophone array was deployed in intertidal marsh creeks located within the North-Inlet-Winyah-Bay Nature Reserve at Baruch Marine Field Laboratory in Hobcaw Barony , Georgetown , South Carolina , USA. for the purpose of localizing the sounds produced by local fish and invertebrates. A conventional approach to localize sound sources was used , consisting of a delay-and-sum beamforming algorithm known as steered response power (SRP) applied to the seven-channel array data during post-processing. This was accomplished by delaying the signal recorded by each channel and combining the signals to ""listen€ to sounds propagating through the array from candidate source locations. The power of the combined signal was maximized , yielding a likely location for the source position. Two-dimensional localization of the soniferous fishes is possible , with a reasonable degree of robustness to noise and aliasing effects of spatial under-sampling. Accuracy is limited due to field measurements and the number of sound producers in the area."

Additional Information

Publication

Thesis

Language: English

Date: 2019

Keywords

hydrophone, array processing, steered response, beamforming, acoustic source localization, acoustics, underwater sound, bioacoustics, fish sound production

Subjects

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