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Title:
STEREO CODING METHOD AND DEVICE, AND STEREO DECODING METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/000724
Kind Code:
A1
Abstract:
A stereo coding method and device and a stereo decoding method and device for improving stereo coding and decoding performance. The stereo coding method comprises: performing downmix processing on a left channel signal of a current frame and a right channel signal of the current frame, so as to obtain a primary channel signal of the current frame and a secondary channel signal of the current frame (401); and upon determining that a frame structure similarity value is within a frame structure similarity interval, performing differential coding on a pitch period of the secondary channel signal using an estimated pitch period value of the primary channel signal, so as to obtain a pitch period index value of the secondary channel signal (403), wherein the pitch period index value of the secondary channel signal is used to generate a stereo coded code stream to be sent.

Inventors:
SHLOMOT EYAL (US)
GAO YUAN (CN)
WANG BIN (CN)
Application Number:
PCT/CN2020/096307
Publication Date:
January 07, 2021
Filing Date:
June 16, 2020
Export Citation:
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Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G10L19/008
Foreign References:
CN109389985A2019-02-26
CN108206021A2018-06-26
CN105405445A2016-03-16
CN104347077A2015-02-11
CN103247293A2013-08-14
JP2011048279A2011-03-10
JP2002023798A2002-01-25
Attorney, Agent or Firm:
SHENPAT INTELLECTUAL PROPERTY AGENCY (CN)
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