Electrical audio signal processing systems and devices – Directive circuits for microphones
Reexamination Certificate
2011-08-30
2011-08-30
Faulk, Devona E (Department: 2614)
Electrical audio signal processing systems and devices
Directive circuits for microphones
C381S091000, C381S122000, C367S118000, C367S119000
Reexamination Certificate
active
08009841
ABSTRACT:
A handsfree communication system includes microphones, a beamformer, and filters. The microphones are spaced apart and are capable of receiving acoustic signals. The beamformer compensates for propagation delays between the direct and reflected acoustic signals. The filters are configured to a predetermined susceptibility level. The filter process the output of the beamformer to enhance the quality of the received signals.
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Faulk Devona E
Nuance Communications Inc.
Paul Disler
Sunstein Kann Murphy & Timbers LLP
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