Sonic attenuation system

Details Sonic attenuation system Sonic attenuation system

1977-07-05

1981-03-10

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Sonar counter-measures

367 92, 367 2, 367100, 367103, H04K 300, G01S 380

Patent

active

042557976

ABSTRACT:
A beam of sound, of sufficient amplitude for inducing a finite amplitude effect in water, is directed into a field of sound for interaction therewith to produce intermodulation products. Energy is removed from the sound field in the formation of the intermodulation products resulting in an attenuation of sound in the sound field.

REFERENCES:
patent: 3824531 (1974-07-01), Walsh
patent: 3882444 (1975-05-01), Robertson

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