公开(公告)号：US20050111673A1

公开(公告)日：2005-05-26

申请号：US10999419

申请日：2004-11-30

申请人： Michael Rosen ,  Christopher Link ,  Richard Little ,  Andrew Munro ,  Hal Greenberger

发明人： Michael Rosen ,  Christopher Link ,  Richard Little ,  Andrew Munro ,  Hal Greenberger

IPC分类号： H04R1/02 ,  B60R11/02 ,  B60R13/02 ,  H04R1/22 ,  H04R1/28

CPC分类号： H04R1/227 ,  B60R11/0217 ,  B60R13/02 ,  B60R13/0243 ,  B60R13/0268 ,  B60R2013/0287 ,  H01L2224/85205 ,  H04R1/2819 ,  H04R1/2834 ,  H04R1/2842 ,  H04R1/2873 ,  H04R9/025 ,  H04R2209/027 ,  H04R2499/13 ,  H01L2924/00

摘要： An apparatus for reducing baffle vibration includes a baffle that is subject to vibration. A first transducer that is seated in the baffle includes a first diaphragm that is acoustically coupled to a listening area in a vehicle and also acoustically coupled to a cavity in the vehicle. A first input signal applied to the first transducer causes the first diaphragm to move in a first direction, thereby generating an acoustic output. A second transducer is mechanically coupled to the first transducer. The second transducer includes a second diaphragm that is acoustically coupled to the first diaphragm and also acoustically coupled to the listening area. A second input signal applied to the second transducer causes the second diaphragm to move in a second direction that is substantially opposite to the first direction to reduce a vibration imparted to the baffle while substantially maintaining the acoustic output.

摘要翻译： 用于减少挡板振动的装置包括受到振动的挡板。 位于挡板中的第一传感器包括声学耦合到车辆中的收听区域并且声学耦合到车辆中的空腔的第一隔膜。 施加到第一换能器的第一输入信号使得第一隔膜沿第一方向移动，从而产生声输出。 第二换能器机械耦合到第一换能器。 第二换能器包括声学耦合到第一隔膜的第二隔膜，并且声学耦合到收听区域。 施加到第二换能器的第二输入信号使得第二隔膜在基本上与第一方向相反的第二方向上移动，以减少施加到挡板的振动，同时基本上保持声输出。