Acoustically filtered transducer

Details Acoustically filtered transducer Acoustically filtered transducer

1981-04-27

1983-08-23

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Signal transducers

181140, 367149, 367162, 367176, 73648, H04R 128, H04R 1710

Patent

active

044008058

ABSTRACT:
Disclosed is an acoustic transducer which includes a pressure tight vessel with a window in the vessel which is transparent to acoustic wave energy. A gas is disposed within the vessel, while an electromechanical transducer is located within the vessel at an antinode for a resonant wave of the gas. A port communicates with the interior of the vessel, with a pressure control coupled to the port and to a source of the gas for controlling the pressure of the fluid within the vessel.

REFERENCES:
patent: 2978672 (1961-04-01), Barney
patent: 3219970 (1965-11-01), Sims
patent: 3262093 (1966-07-01), Junger et al.
patent: 3292142 (1966-12-01), Carson
patent: 3466924 (1969-09-01), Roshon et al.
patent: 3753218 (1973-08-01), Hill et al.
patent: 3781779 (1973-12-01), Tallman
patent: 3812456 (1973-12-01), Lane et al.
patent: 4006707 (1977-02-01), Denslow

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