公开(公告)号：US20190115040A1

公开(公告)日：2019-04-18

申请号：US16208451

申请日：2018-12-03

申请人： MOTOROLA MOBILITY LLC

发明人： PRATIK M. KAMDAR ,  JINCHENG WU ,  JOEL A. CLARK ,  MALAY GUPTA ,  PLAMEN A. IVANOV

IPC分类号： G10L21/0232 ,  G10L21/0272 ,  G10L21/0316 ,  G10L25/84 ,  G10L25/21

CPC分类号： G10L21/0232 ,  G10L21/0272 ,  G10L21/0316 ,  G10L25/21 ,  G10L25/78 ,  G10L25/84 ,  G10L2021/02082

摘要： A method includes obtaining, by a processor, an audio echo signal and an audio desired signal from an acoustic echo correction stage of an electronic device, and converting the echo signal and the desired signal to the frequency domain. The method further includes grouping, by the processor, frequency bin results of respective frequency domain converted echo and desired signals into respective echo and desired sub-bands. A sub-band suppressor gain is estimated based on an estimated sub-band energy for the echo and desired sub-bands. The method further includes modulating the frequency domain converted desired signal to compensate for residual echo, the modulating based, at least in part, on the estimated sub-band suppressor gain, and the modulating producing a compensated frequency domain converted echo signal. The method also includes converting the compensated frequency domain converted desired signal into time domain converted audio output signal.