Acoustic filter for suppressing or attenuating the negative half

Details Acoustic filter for suppressing or attenuating the negative half Acoustic filter for suppressing or attenuating the negative half

1988-04-28

1989-08-08

Steinberger, Brian S.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

181175, 128328, H04R 102, A61B 1700

Patent

active

048561070

ABSTRACT:
An acoustic filter is provided for attenuating or suppressing the negative pressure half-waves of an elastic wave, comprising an enclosure containing a liquid whose saturating vapor tension is close to the atmospheric pressure. A pump causes the liquid to flow and a regulator fixes its temperature.

REFERENCES:
patent: 4012952 (1977-03-01), Dory
patent: 4340944 (1982-07-01), Dory
patent: 4535630 (1985-08-01), Samodovitz
patent: 4617931 (1986-10-01), Dory
patent: 4618796 (1986-10-01), Riedlinger
patent: 4658828 (1987-04-01), Dory
patent: 4679597 (1987-07-01), Stein
patent: 4718421 (1988-01-01), Rohwedder et al.

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