公开(公告)号：US10854215B2

公开(公告)日：2020-12-01

申请号：US16546532

申请日：2019-08-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Seongwoo Kim ,  Han Young Yim ,  Dongil Hyun ,  Jong Won Shin ,  Hyungchan Song

IPC: G10L21/02 ,  G10L21/0216 ,  H04R3/04 ,  G10L21/0208

Abstract: A residual echo estimator estimates a residual echo of a microphone signal input to a microphone as a reference signal is output through a speaker. The residual echo estimator estimates a magnitude of a residual echo of the reference signal at a current frame by using a magnitude of the linear echo of the reference signal at the current frame and a magnitude of the linear echo of the reference signal at a past frame, and updates weights to be applied to the magnitudes of the linear echo.