Electrical audio signal processing systems and devices – Directive circuits for microphones
Reexamination Certificate
2004-07-01
2010-11-23
Mei, Xu (Department: 2614)
Electrical audio signal processing systems and devices
Directive circuits for microphones
C381S337000, C381S160000, C381S122000
Reexamination Certificate
active
07840013
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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Dedieu Stephanie
Moquin Philippe
Mei Xu
Mitel Networks Corporation
Olaniran Fatimat O
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