Title:
METHOD AND APPARATUS FOR ESTIMATING TIME DELAY OF STEREO AUDIO SIGNAL
Document Type and Number:
WIPO Patent Application WO/2022/012629
Kind Code:
A1
Abstract:
A method and apparatus for estimating the time delay of a stereo audio signal. The method may comprise: obtaining a current frame of a stereo audio signal (S401), the current frame comprising a first channel audio signal and a second channel audio signal; if the signal type of a noise signal contained in the current frame is a correlated noise signal type, using a first algorithm to estimate the interaural time difference (ITD) of the current frame (S403); and if the signal type of the noise signal contained in the current frame is a diffuse noise signal type, using a second algorithm to estimate the ITD of the current frame (S403), wherein the first algorithm comprises using a first weighting function to weight the frequency domain cross power spectrum of the current frame, the second algorithm comprises using a second weighting function to weight the frequency domain cross-power spectrum of the current frame, and the first weighting function and the second weighting function have different construction factors. The use of different ITD estimation algorithms for stereo audio signals containing different types of noise can improve ITD estimation accuracy of stereo audio signals.
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Inventors:
DING JIANCE (CN)
WANG ZHE (CN)
WANG BIN (CN)
XIA BINGYIN (CN)
WANG ZHE (CN)
WANG BIN (CN)
XIA BINGYIN (CN)
Application Number:
PCT/CN2021/106515
Publication Date:
January 20, 2022
Filing Date:
July 15, 2021
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G10L19/08
Foreign References:
| CN110082725A | 2019-08-02 | |||
| CN107479030A | 2017-12-15 | |||
| CN111239686A | 2020-06-05 | |||
| CN109901114A | 2019-06-18 | |||
| CN107393549A | 2017-11-24 | |||
| US20030235318A1 | 2003-12-25 | |||
| CN202010700806A | 2020-07-17 |
Other References:
See also references of EP 4170653A4
Attorney, Agent or Firm:
BEIJING RUN ZEHENG INTELLECTUAL PROPERTY LAW FIRM (CN)
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