公开(公告)号：US20150187348A1

公开(公告)日：2015-07-02

申请号：US14578209

申请日：2014-12-19

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hun Sik KANG ,  Do Young KIM

IPC: G10K11/175

CPC classification number: G10L21/0208 ,  G10L2021/02082

Abstract: An apparatus for cancelling an acoustic echo estimates power of a non-linear distortion component of a line amplifier from a signal generated by passing a far-end signal through the line amplifier, controls a gain of the line amplifier using a power estimate of the non-linear distortion component, generates an acoustic echo estimation signal from the far-end signal, and subtracts the acoustic echo estimation signal from a signal input through a microphone to cancel an acoustic echo signal.

Abstract translation: 用于消除声学回声的装置从通过使远端信号通过线路放大器产生的信号估计线路放大器的非线性失真分量的功率，使用非线性功率估计来控制线路放大器的增益， 线性失真分量，从远端信号生成声学回波估计信号，并从通过麦克风输入的信号中减去声学回波估计信号，以消除声学回波信号。