发明名称 |
Systems and methods for sensing an acoustic signal using microelectromechanical systems technology |
摘要 |
An acoustic system has an acoustic sensor and a processing circuit. The acoustic sensor includes a base, a microphone having a microphone diaphragm supported by the base, and a hot-wire anemometer having a set of hot-wire extending members supported by the base. The set of hot-wire extending members defines a plane which is substantially parallel to the microphone diaphragm. The processing circuit receives a sound and wind pressure signal from the microphone and a wind velocity signal from the hot-wire anemometer, and provides an output signal based on the sound and wind pressure signal from the microphone and the wind velocity signal from the hot-wire anemometer (e.g., accurate sound with wind noise removed). The configuration of the hot-wire extending members defining a plane which is substantially parallel to the microphone diaphragm can be easily implemented in a MEMS device making the configuration suitable for miniaturized applications.
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申请公布号 |
US6688169(B2) |
申请公布日期 |
2004.02.10 |
申请号 |
US20010881793 |
申请日期 |
2001.06.15 |
申请人 |
TEXTRON SYSTEMS CORPORATION |
发明人 |
CHOE HOWARD C.;BULAT EMEL S. |
分类号 |
G01P5/12;G01S7/521;H04R3/00;H04R23/00;H04R23/02;(IPC1-7):G01F13/00 |
主分类号 |
G01P5/12 |
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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