ELECTRONIC DEVICE, AND METHOD FOR REMOVING RESIDUAL ECHO ON BASIS OF NEURAL NETWORK

WIPO Patent Application WO/2021/133097

A1

An electronic device according to various embodiments comprises: a communication circuit; an input and output device comprising at least one microphone and at least one speaker; a processor operatively connected to the communication circuit and the input and output device; and memory operatively connected to the processor and storing a residual echo removal neural network model, wherein the memory, when running, may store instructions for the processor to: receive, via the at least one microphone, an input signal comprising voice and echo; estimate a first echo signal from the input signal; generate a first channel signal comprising a second echo signal, by removing the estimated first echo signal from the input signal; estimate the second echo signal; generate a second channel signal by compensating for the size of the estimated second echo signal; acquire a neural network output signal having an improved speech-to-echo ratio (SER), by using, as an input value of the residual echo removal neural network model, the first channel signal and the second channel signal; and acquire a voice signal from which the echo is removed by post-processing the neural network output signal.

CHO KIHO (KR)
BAEK SOONHO (KR)
MOON HANGIL (KR)
SON BEAKKWON (KR)
YANG JAEMO (KR)
LEE GUNWOO (KR)
LEE MYOUNGHO (KR)

PCT/KR2020/019087

July 01, 2021

December 24, 2020

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SAMSUNG ELECTRONICS CO LTD (KR)

H04R5/04; G06N3/02; H04R1/20; H04R3/04

JP2019004466A	2019-01-10
KR20180115984A	2018-10-24
JP2009267799A	2009-11-12
KR101349477B1	2014-01-08
US20080112574A1	2008-05-15

YOON & LEE INTERNATIONAL PATENT & LAW FIRM (KR)

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