METHOD AND ELECTRONIC DEVICE FOR REMOVING ECHO FLOWING IN DUE TO EXTERNAL DEVICE

WIPO Patent Application WO/2022/154416

A1

An electronic device according to various embodiments comprises a communication module, at least one microphone, and a processor. The processor can be configured to: be connected to an external device by means of the communication module; switch a call audio signal path to an external device output path in response to being call-connected to an opponent device; duplicate a call audio signal (Rx in) transmitted from the opponent device, provide a first signal to an echo removal module, and provide a second signal to the external device via the external device output path; measure latency between the external device and the electronic device; variably adjust the size of a dynamic buffer for removing echo, by applying the measured latency; generate a reference signal delayed in the second signal, by means of the adjusted dynamic buffer; and remove an echo signal, with respect to the first signal generated from a speaker of the external device, from a microphone input signal obtained from the at least one microphone, on the basis of the generated reference signal.

KIM SEUNGHYUN (KR)
KIM BAEKGYEONG (KR)
KIM GANGYOUL (KR)
KIM MISUN (KR)
KIM SANGHEON (KR)
SEO MIRA (KR)
CHOI KWANGYONG (KR)
PARK DONGYOON (KR)
LIM YEUNWOOK (KR)

PCT/KR2022/000410

July 21, 2022

January 11, 2022

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SAMSUNG ELECTRONICS CO LTD (KR)

H04M9/08; G06F3/14; H04R3/00; H04R3/02

KR20200070346A	2020-06-17
KR20170011763A	2017-02-02
KR20000020903A	2000-04-15
JP2020171006A	2020-10-15
US20190281162A1	2019-09-12

YOON & LEE INTERNATIONAL PATENT & LAW FIRM (KR)

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