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Patent Searching and Data


Title:
STEREO SIGNAL CODING AND DECODING METHOD AND CODING AND DECODING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/001570
Kind Code:
A8
Abstract:
Provided are a stereo signal coding method and apparatus and decoding method and apparatus. The coding method comprises: performing spectrum spreading on a quantized LSF parameter of a primary channel signal of a current frame in a stereo signal to obtain the LSF parameter of the primary channel signal after spectrum spreading (S510); determining the prediction residual of an LSF parameter of a secondary channel signal according to an original LSF parameter of the secondary channel signal of the current frame and the LSF parameter of the primary channel signal after spectrum spreading (S520); and performing quantization coding on the prediction residual of the LSF parameter of the secondary channel signal (S530). The coding and decoding method and apparatus facilitate a reduction in the number of bits in coding.

Inventors:
SHLOMOT EYAL (US)
GIBBS JONATHAN ALASTAIR (GB)
LI HAITING (CN)
Application Number:
CN2019/093404
Publication Date:
October 22, 2020
Filing Date:
June 27, 2019
Export Citation:
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Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G10L19/008
Attorney, Agent or Firm:
LONGSUN LEAD IP LTD. (CN)
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