Method for broadband constant directivity beamforming for...

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

H - Electricity

04

R

H04R 1/32 (2006.01) H04R 1/40 (2006.01)

Patent

CA 2453048

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 correcting the beam pattern and keeping the main lobe reasonably constant by combined variation of the main lobe with the look direction angle arid 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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