Title:
ECHO ELIMINATION METHOD, DEVICE, AND COMPUTER STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2017/143805
Kind Code:
A1
Abstract:
Disclosed in the present invention are an echo elimination method and device. The method comprises: detecting whether a near-end signal contains an audio signal; processing, according to a normalized least mean square (NLMS) filtering algorithm, a far-end signal to obtain an estimation signal, and subtracting the estimation signal from the near-end signal to obtain a residual signal; if a detection result is that the near-end signal contains the audio signal, then detecting whether the residual signal meets a predetermined output condition; and if the residual signal does not meet the predetermined output condition, then multiplying the residual signal with a first attenuation factor to obtain an output signal. Also provided in the embodiments of the present invention is a computer storage medium.
Inventors:
ZHOU JIAQING (CN)
Application Number:
PCT/CN2016/105370
Publication Date:
August 31, 2017
Filing Date:
November 10, 2016
Export Citation:
Assignee:
TENCENT TECH SHENZHEN CO LTD (CN)
International Classes:
G10L21/0216; H04M9/08; G10L21/0264
Foreign References:
| CN105791611A | 2016-07-20 | |||
| CN101719969A | 2010-06-02 | |||
| CN103067628A | 2013-04-24 | |||
| CN1917038A | 2007-02-21 | |||
| US20020041678A1 | 2002-04-11 | |||
| US20090245527A1 | 2009-10-01 |
Attorney, Agent or Firm:
CHINA PAT INTELLECTUAL PROPERTY OFFICE (CN)
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