Method and apparatus for detecting and locating noise...

Details Method and apparatus for detecting and locating noise... Method and apparatus for detecting and locating noise...

2006-02-14

2006-02-14

Nghiem, Michael (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Earth science

C073S04050A, C073S624000, C381S071200, C381S092000, C702S152000

Reexamination Certificate

active

06999881

ABSTRACT:
A method of detecting and locating noise sources each emitting respective signals Sjwith j=1 to M, detection being provided by a sound wave or vibration sensors each delivering a respective time-varying electrical signal siwith i in the range 1 to N, wherein the method steps include: (a) taking the time-varying electrical signals delivered by the sensors, each signal si(t) delivered by a sensor being the sum of the signals Sjemitted by the noise sources; (b) amplifying and filtering the time-varying electrical signals as taken; (c) digitizing the electrical signals; (d) calculating a functional; and (e) minimizing the functional relative to the vectors njfor j=1 to M so as to determine the directions of vector njof the noise sources.

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patent: 6751559 (2004-06-01), Fookes et al.
patent: 2001/0031053 (2001-10-01), Feng et al.
patent: 27 04 511 (1978-08-01), None

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