Acoustic deterrent system and method

A - Human Necessities – 01 – K

Patent

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Details

A01K 29/00 (2006.01) A01K 61/00 (2006.01) A01K 79/02 (2006.01) A01M 29/02 (2006.01)

Patent

CA 2165967

An acoustic system and a method for repelling marine mammals from a region of water is disclosed. A plurality of acoustic transducers (10, 12, 14, 16) are spatially dispersed beneath the surface of the water. The transducers (10, 12, 14, 16) in sequence output high frequency acoustic signals into the water. The power of the acoustic signals starts at a low level and is gradually or incrementally increased to a high level which produces a signal beyond the threshold of pain of the mammals to be repelled. The mammals are therefore gradually repelled from the area without suffering permanent hearing loss.

Sont décrits un système et un procédé acoustiques destinés à éloigner les mammifères marins d'une zone aquatique. Plusieurs transducteurs (10, 12, 14, 16) sont répartis sous la surface de l'eau. Ils y émettent, en séquence, des sons à haute fréquence. La puissance de ces sons, faible au début, augmente progressivement ou par paliers successifs, atteignant un niveau si élevé qu'il dépasse le seuil de douleur des mammifères à écarter. Ainsi, ceux-ci s'éloignent progressivement de la zone, sans toutefois souffrir de pertes définitives de l'audition.

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