The present invention uses a pair of phased array of microphone panels in conjunction with a digital signal processor, disk storage, and beam-steering and noise suppression algorithms to discreetly provide a phased array surveillance system (PASS) for audio data. The above elements are covertly housed in a briefcase, for instance. Also included is a wireless RF transceiver system that relays data picked up by the microphone array panels to a remote unit for real-time analysis. The remote unit is also capable of controlling the beam forming and noise suppression algorithms as well as perform beam-steering of the PASS unit allowing the remote operator to selectively target individual speakers in real-time. Data recorded by the PASS unit is made available for subsequent analysis using beam forming and noise suppression algorithms.
申请公布号
WO0171687(A3)
申请公布日期
2002.02.07
申请号
WO2001US08484
申请日期
2001.03.16
申请人
THE JOHNS HOPKINS UNIVERSITY;HAYEK, CARLETON, S.;SARI, JAMES, W.;STANKOVICH, PETER;NEWHALL, BRUCE, K.
发明人
HAYEK, CARLETON, S.;SARI, JAMES, W.;STANKOVICH, PETER;NEWHALL, BRUCE, K.