Method and structure for inducing acoustic signals and attenuating acoustic signals
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United States of America Patent
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Sep 1, 2015
Grant Date -
Dec 22, 2011
app pub date -
Jun 6, 2011
filing date -
Jun 4, 2010
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Abstract
At least embodiment is directed to an earpiece comprising a housing; and a field responsive fluid, where the field responsive fluid is in the housing, where the housing is part of the earpiece, and where the earpiece is configured to vary a field to vary an acoustical property of the field responsive fluid.
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