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 aids, voice input devices, surveillance devices, and other applications.
申请公布号
CA2685434(A1)
申请公布日期
2001.11.15
申请号
CA20012685434
申请日期
2001.05.10
申请人
THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS
发明人
JONES, DOUGLAS L.;LOCKWOOD, MICHAEL E.;BILGER, ROBERT C.;FENG, ALBERT S.;LANSING, CHARISSA R.;O'BRIEN, WILLIAM D., JR.;WHEELER, BRUCE C.;ELLEDGE, MARK;LIU, CHEN