公开(公告)号：US20180367674A1

公开(公告)日：2018-12-20

申请号：US15781887

申请日：2015-12-08

Applicant: Nuanec Communications, Inc.

Inventor： Ingo Schalk-Schupp ,  Markus Buck ,  Friedrich FaubeI

IPC: H04M9/08 ,  G10L21/0232 ,  G10L21/0264

CPC classification number: H04M9/082 ,  G10L21/0232 ,  G10L21/0264 ,  G10L2021/02082 ,  H04M1/6041 ,  H04M9/08 ,  H04M2201/40

Abstract: A method for residual echo suppression is provided. Embodiments may include receiving an original reference signal and applying a distortion function to the original reference signal to generate a second signal. Embodiments may include generating a non-linear signal from the distortion function that does not include linear components of the original reference signal. Embodiments may also include calculating a residual echo power of a linear component and a non-linear component, wherein the linear component is based upon the original reference signal and the non-linear component is based upon the non-linear signal. Embodiments may further include applying a room model to each of the original reference signal and the non-linear signal and estimating a power associated with the original reference signal and the non-linear signal. Embodiments may include calculating a combined echo power estimate as a weighted sum of a weighted original reference signal power and a weighted non-linear signal power.