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Evaluation of a rubber-compound diaphragm for acoustic fisheries surveys: Effects on dual-beam signal intensity and beam patterns

Journal of Sound and Vibration

By:
, , , and
DOI: 10.1006/jsvi.2002.5139

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Abstract

The use of rubber-compound windows for fisheries acoustics must consider operating frequency and ambient water temperatures. Signal attenuation by the rubber becomes pronounced with increased frequency and decreased temperature. Based on our results, a 420 k Hz system could be expected to lose up to 3-4 dB in colder water through a 5.1-cm thick rubber diaphragm. At 120 k Hz, signal loss was negligible and would undoubtedly also be inconsequential for even lower frequencies used in fisheries applications (e.g., 70, 38 k Hz).

Additional publication details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Evaluation of a rubber-compound diaphragm for acoustic fisheries surveys: Effects on dual-beam signal intensity and beam patterns
Series title:
Journal of Sound and Vibration
DOI:
10.1006/jsvi.2002.5139
Volume:
258
Issue:
4
Year Published:
2002
Language:
English
Publisher:
Elsevier
Contributing office(s):
Great Lakes Science Center
Description:
10 p.
First page:
763
Last page:
772
Online Only (Y/N):
N
Additional Online Files (Y/N):
N