Acoustic transmitter

Details Acoustic transmitter Acoustic transmitter

1974-05-06

1976-03-30

Tubbesing, T. H.

Acoustics

Geophysical or subsurface exploration

Seismic wave generation

181400, 181402, 340 8R, 340 5R, 340384R, H04B 1302, G01V 102

Patent

active

039468313

ABSTRACT:
A transmitter of acoustic energy which propagates that energy in a directional manner is described. An acoustic signal generator is connected at one end of an acoustic transmission line which exhibits a certain characteristic impedance. The line has a number of ports spaced along its length. Surrounding each port is a coupler section which is antiresonant at the driven frequency and which presents a high acoustic driving point impedance to its associated port. In one embodiment, the interior diameter of the line is changed following each port as to make the acoustic pressure along the line and at each port constant, and the acoustic energy radiated in each coupler equal. Accordingly, acoustic energy is partitioned evenly at each port so as to define an array of equal strength radiators having directional acoustic signal propagating characteristics.

REFERENCES:
patent: 2789651 (1957-04-01), Daniels
patent: 3517390 (1970-06-01), Whitehead

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