ACOUSTIC DEVICE
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United States of America Patent
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Issued Date -
Dec 10, 2015
app pub date -
Jun 3, 2015
filing date -
Jun 4, 2014
priority date (Note) -
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Abstract
An acoustic device includes a cabinet with a cavity room, a speaker unit mounted in the cavity room of the cabinet, a sealed room formed by the cabinet together with the speaker unit, a predetermined amount of nonpolarity gas which is sealed in the sealed room, a predetermined amount of zeolite absorbent which is sealed in the sealed room and physically absorbing the nonpolarity gas so as to decrease a resonant frequency of the sealed room and increase low frequency resonance of speaker unit.
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