ENCODING AND DECODING METHOD FOR STEREO AUDIO SIGNAL, ENCODING DEVICE, AND DECODING DEVICE

Title:

ENCODING AND DECODING METHOD FOR STEREO AUDIO SIGNAL, ENCODING DEVICE, AND DECODING DEVICE

Document Type and Number:

WIPO Patent Application WO/2020/001569

Kind Code:

A1

Abstract:

An encoding method, decoding method, encoding device, and decoding device for a stereo audio signal. The encoding method comprises: determining a target self-adaptive spreading factor on the basis of an LSF parameter of a quantified primary audio signal of a current frame and of an LSF parameter of a secondary audio signal of the current frame (S510); and writing the LSF parameter of the quantified primary audio signal of the current frame and the target self-adaptive spreading factor into a code stream (S530). The method favors reduced distortion to the LSF parameter of a quantified secondary audio signal, thus favoring a reduced ratio of occurrence of frames having large distortion deviation.

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Inventors:

SHLOMOT EYAL (US)
GIBBS JONATHAN ALASTAIR (GB)
LI HAITING (CN)

Application Number:

PCT/CN2019/093403

Publication Date:

January 02, 2020

Filing Date:

June 27, 2019

Export Citation:

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Assignee:

HUAWEI TECH CO LTD (CN)

International Classes:

G10L19/008

Domestic Patent References:

WO2018086947A1

2018-05-17

Foreign References:

CN107592938A	2018-01-16
CN102243876A	2011-11-16
CN201810713020A	2018-06-29

Other References: