Tapered tube impedance matching underwater voice communicator wi

Details Tapered tube impedance matching underwater voice communicator wi Tapered tube impedance matching underwater voice communicator wi

1984-07-31

1985-07-09

Fuller, Benjamin R.

Acoustics

Speaking tubes

181 21, 181 22, 181127, 181173, 181175, 181198, 181235, 181252, 12820029, 12820119, 367132, G10K 1100, F01N 712

Patent

active

045276579

ABSTRACT:
An underwater voice communicator in which the preferred embodiment comprises a pair of tapered tubes in communication with a diver's mouth. The tubes are constructed of a material having a sound impedance similar to the sound impedance of water. Sound energy issuing from the mouth of a diver is reflected down the length of the tapered tubes to an area of the tube that concentrates the sound for injection into the surrounding water.

REFERENCES:
patent: 3123680 (1964-03-01), Minton, Jr. et al.
patent: 3174129 (1965-03-01), Laughlin et al.
patent: 3210723 (1965-10-01), Martelli et al.
patent: 3347230 (1967-10-01), Cupp
patent: 3828887 (1974-08-01), Alexander
patent: 4031888 (1977-06-01), Walters
patent: 4071110 (1978-01-01), Payne
patent: 4183422 (1980-01-01), Williams

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