INTEGRATED ECHO CANCELLATION AND NOISE SUPPRESSION
摘要
<p>A method for echo cancellation and noise suppression is disclosed. Linear echo cancellation (LEC) is performed for a primary microphone channel on an entire frequency band or in a range of frequencies where echo is audible. LEC is performed on one or more secondary microphone channels only on a lower frequency range over which spatial processing is effective. The microphone channels are spatially processed over the lower frequency range after LEC. Non-linear noise suppression post-processing is performed on the entire frequency band. Echo post-processing is performed on the entire frequency band.</p>
申请公布号
WO2012138794(A1)
申请公布日期
2012.10.11
申请号
WO2012US32217
申请日期
2012.04.04
申请人
QUALCOMM INCORPORATED;MOHAMMAD, ASIF I.;CHAN, KWOKLEUNG;LIU, IAN ERNAN;VISSER, ERIK;RAMAKRISHNAN, DINESH
发明人
MOHAMMAD, ASIF I.;CHAN, KWOKLEUNG;LIU, IAN ERNAN;VISSER, ERIK;RAMAKRISHNAN, DINESH