Underwater pinger acoustic resonance chamber

Details Underwater pinger acoustic resonance chamber Underwater pinger acoustic resonance chamber

1995-07-20

1997-05-06

Pihulic, Daniel T.

Communications, electrical: acoustic wave systems and devices

Transmitter systems

Animal control

G10K 912

Patent

active

056278012

ABSTRACT:
An acoustic resonance chamber in an underwater pinger is designed to enhance the acoustic emission from the pinger. An electro-acoustic transducer of the pinger is positioned away from a reflective surface of the pinger housing by a distance chosen in proportion to the wavelength of the fundamental frequency of the acoustic emission. This creates a resonant condition at the transducer, maximizing the acoustic output. This design also causes a maximum transfer of the acoustic wave through the pinger housing and into the surrounding water.

REFERENCES:
patent: 3872421 (1975-03-01), Rogers et al.
patent: 4646276 (1987-02-01), Kowalewski et al.
patent: 4805339 (1989-02-01), Fuentes
patent: 5291682 (1994-03-01), Zaccheo

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