Method and structure for inducing acoustic signals and attenuating acoustic signals

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专利权人:

John P. Keady

发明人:

John P. Keady

申请号：

US13154429

公开号：

US09123323B2

申请日:

2011.06.06

申请国别(地区):

US

年份:

2015

代理人:

摘要：

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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