发明名称 |
System and method for eliminating audible noise for ultrasonic transducers |
摘要 |
Methods for reducing clicking of ultrasonic air-coupled transducers in which a mechanical filter that attenuates audible frequencies relative to ultrasonic frequencies is placed in the path of the ultrasonic waves as the travel from the transducer to a target such as an object in the vehicle compartment.
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申请公布号 |
US7079450(B2) |
申请公布日期 |
2006.07.18 |
申请号 |
US20040835159 |
申请日期 |
2004.04.29 |
申请人 |
AUTOMOTIVE TECHNOLOGIES INTERNATIONAL, INC. |
发明人 |
BREED DAVID S.;DUVALL WILBUR E.;JOHNSON WENDELL C. |
分类号 |
H04B1/02;B06B1/02 |
主分类号 |
H04B1/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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