Measuring and testing – Fluid flow direction – With velocity determination
Reexamination Certificate
2005-02-22
2005-02-22
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Fluid flow direction
With velocity determination
C073S170110, C073S645000, C029S592100
Reexamination Certificate
active
06857312
ABSTRACT:
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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Bulat Emel S.
Choe Howard C.
Chapin & Huang , L.L.C.
Ellington Alandra
Huang, Esq. David E.
Lefkowitz Edward
Textron Systems Corporation
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