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Title:
TIME DELAY ESTIMATION METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/001252
Kind Code:
A1
Abstract:
Disclosed are a time delay estimation method and device, wherein same belong to the field of audio processing. The method comprises: determining cross-correlation coefficients of a multi-channel signal of a current frame; determining a time delay trajectory estimation value of the current frame according to inter-channel time difference information about the buffered at least one past frame; determining an adaptive window function of the current frame; weighting the cross-correlation coefficients according to the time delay trajectory estimation value of the current frame and the adaptive window function of the current frame, so as to obtain a weighted cross-correlation coefficient; and determining an inter-channel time difference of the current frame according to the weighted cross-correlation coefficient. The present invention solves the problem that a cross-correlation coefficient is excessively smoothed or insufficiently smoothed, thereby improving the accuracy of estimating an inter-channel time difference.

Inventors:
SHLOMOT, Eyal (3955 E 3rd St, Long Beach, California, 90814, US)
LI, Haiting (Huawei Administration Building, BantianLonggang Distric, Shenzhen Guangdong 9, 518129, CN)
MIAO, Lei (Huawei Administration Building, BantianLonggang Distric, Shenzhen Guangdong 9, 518129, CN)
Application Number:
CN2018/090631
Publication Date:
January 03, 2019
Filing Date:
June 11, 2018
Export Citation:
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Assignee:
HUAWEI TECHNOLOGIES CO., LTD. (Huawei Administration Building, BantianLonggang Distric, Shenzhen Guangdong 9, 518129, CN)
International Classes:
G10L19/008
Foreign References:
CN103366748A2013-10-23
US20050065786A12005-03-24
CN103700372A2014-04-02
CN106209491A2016-12-07
CN106814350A2017-06-09
Attorney, Agent or Firm:
BEIJING SAN GAO YONG XIN INTELLECTUAL PROPERTY AGENCY CO., LTD. (A-1-102, He Jing Yuan Ji Men Li, Xueyuan Road,Haidian District, Beijing 8, 100088, CN)
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