发明授权
- 专利标题： Actively tunable lightweight acoustic barrier materials
- 专利标题（中）： 主动调谐轻便隔音材料
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申请号： US14084604申请日： 2013-11-19
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公开(公告)号： US09004226B1公开(公告)日： 2015-04-14
- 发明人: Geoffrey P. McKnight , Christopher P. Henry , Chia-Ming Chang , Andrew C. Keefe
- 申请人： HRL Laboratories, LLC
- 申请人地址： US CA Malibu
- 专利权人： HRL Laboratories, LLC
- 当前专利权人： HRL Laboratories, LLC
- 当前专利权人地址： US CA Malibu
- 代理商 Christopher R. Balzan
- 主分类号： E04B1/86
- IPC分类号： E04B1/86 ; G10K11/16
摘要：
In one embodiment, provided is an actively tunable acoustic attenuator having a frame, a membrane within the frame, and a mass secured to the membrane. In another embodiment, provided is an actively tunable acoustic attenuator having a frame, a membrane within the frame, and a mass secured to the membrane. The membrane is coupled, either indirectly or directly, to the frame via a variable stiffness coupler. In another embodiment, provided is an actively tunable acoustic attenuator having a frame and a plurality of membrane layers within the frame. An active material is between at least two of the plurality of membrane layers. A mass is secured to at least one of the plurality of membrane layers.
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