Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
November 23, 2010
Patent Application Number
10881468
Date Filed
July 1, 2004
Patent Primary Examiner
Patent abstract
An array of microphones is provided wherein the microphones are positioned at the ends of cavities within a diffracting structure. The cavity depth, width, and shape are optimised to provide high directivity without grating lobes, at frequencies for which the distance between microphones is greater than half the acoustic wavelength.
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