METHOD AND STRUCTURE FOR ACHIEVEING ACOUSTICALLY SPECTRUM TUNABLE EARPIECES, PANELS, AND INSERTS

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专利权人:

John P. Keady

发明人:

John P. Keady

申请号：

US13859815

公开号：

US20140373854A1

申请日:

2013.04.10

申请国别(地区):

US

年份:

2014

代理人:

摘要：

At least one exemplary embodiment is directed to an earpiece that includes a fluid in a reservoir where the composition of the fluid or the pressure of the fluid can be modified to vary the insertion loss value of the earpiece.

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中国工程科技知识中心

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http://www.ckcest.cn/home/