Communications – electrical: acoustic wave systems and devices – Transmitter systems – Animal control
Patent
1988-10-05
1990-09-04
Tarcza, Thomas H.
Communications, electrical: acoustic wave systems and devices
Transmitter systems
Animal control
43 171, 116 22A, H04B 102
Patent
active
049550055
ABSTRACT:
A system and method for developing acoustic underwater stimuli for guiding aquatic animals such as fish, to or from an underwater area. Fish captured from the underwater area are placed in a sound recording chamber and their sounds recorded. The spectrum of the recorded sound is analyzed and is used to vary a primary sound spectrum is accordance with predominate frequencies contained therein to create a sound believed to have the most efficient guidance effect on the fish since the fish are believed to be most responsive to sounds produced by the fish themselves. The captured fish are then placed in a behavior chamber preferably located in the underwater area. The created sound or stimuli is applied to behavior chamber to determine its effect on the fish contained therein and may be modified to arrive at the most effective sound. This sound then is applied to the underwater area and measured to ensure that is has been properly applied.
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Haymes et al., Can. J. Fish. Aquat. Sci., vol. 43, 1986-"Exclusion of Adult Alewife, Alosa pseudoharengus, Using Low-Frequency Sound for Application at Water Intakes".
Pihulic Daniel T.
Tarcza Thomas H.
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