Electrical audio signal processing systems and devices – Directive circuits for microphones
Reexamination Certificate
2007-09-11
2007-09-11
Chin, Vivian (Department: 2615)
Electrical audio signal processing systems and devices
Directive circuits for microphones
C381S091000
Reexamination Certificate
active
10732283
ABSTRACT:
A method is provided for designing a broad band constant directivity beamformer for a non-linear and non-axi-symmetric sensor array embedded in an obstacle having an odd shape, where the shape is imposed by industrial design constraints. In particular, the method of the present invention provides for collecting the beam pattern and keeping the main lobe reasonably constant by combined variation of the main lobe with the look direction angle and frequency. The invention is particularly useful for microphone arrays embedded in telephone sets but can be extended to other types of sensors.
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Dedieu Stephane
Moquin Philippe
Antonelli, Terry Stout & Kraus, LLP.
BNY Trust Company of Canada
Chin Vivian
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