Electrical audio signal processing systems and devices – Hearing aids – electrical – Directional
Reexamination Certificate
2006-07-11
2009-08-18
Ensey, Brian (Department: 2614)
Electrical audio signal processing systems and devices
Hearing aids, electrical
Directional
C381S092000, C381S356000
Reexamination Certificate
active
07577266
ABSTRACT:
System (10) is disclosed including an acoustic sensor array (20) coupled to processor (42). System (10) processes inputs from array (20) to extract a desired acoustic signal through the suppression of interfering signals. The extraction/suppression is performed by modifying the array (20) inputs in the frequency domain with weights selected to minimize variance of the resulting output signal while maintaining unity gain of signals received in the direction of the desired acoustic signal. System (10) may be utilized in hearing, cochlear implants, speech recognition, voice input devices, surveillance devices, hands-free telephony devices, remote telepresence or teleconferencing, wireless acoustic sensor arrays, and other applications.
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Bilger, legal representative Carolyn J.
Feng Albert S.
Jones Douglas L.
Lansing Charissa R.
Lockwood Michael E.
Ensey Brian
Krieg DeVault LLP
The Board of Trustees of the University of Illinois
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