Acoustic marine aquatic life detector with resonance chamber
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United States of America Patent
Stats
-
Dec 1, 1992
Grant Date -
N/A
app pub date -
Nov 19, 1991
filing date -
Nov 19, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Aquatic animal detector apparatus is constituted by a passive transducer for converting sounds, including bio-soundwaves from a living source traveling in a body of water, to electrical signals. A resonance chamber is connected to said transducer and tuned to pass bio-sound electrical signals, and a discriminator is connected to the transducer with the discriminator being programmed to pass a predetermined pattern of bio-soundwave electrical signals constituting a sonic profile of a selected aquatic animal. The resonance tube is adjustable to adjust the resonance frequency of the resonance chamber. In a preferred embodiment, the chamber is a hollow tube with the transducer at one end of the tube and, the opposite end being open so that when immersed in said body of water, water will rise therein and adjusting the resonance frequency by adjusting the depth of immersion of said opposite end. Sound absorbing foam can be applied to the exterior surface of the tube.
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