Method of broadband constant directivity beamforming for non...

Details Method of broadband constant directivity beamforming for non... Method of broadband constant directivity beamforming for non...

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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