Acoustic filter for suppressing or attenuating the negative half-waves of an elastic wave and an elastic wave generator comprising such a filter
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United States of America Patent
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Aug 8, 1989
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N/A
app pub date -
Apr 28, 1988
filing date -
Apr 28, 1987
priority date (Note) -
Expired
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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.
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