Title:
AUDIO ENCODING METHOD AND ENCODING/DECODING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/002216
Kind Code:
A1
Abstract:
The present application provides an audio encoding method and an encoding device, capable of reducing encoding redundancy and improving encoding efficiency. The method comprises: obtaining the current frame of an audio signal, the current frame of the audio signal comprising a high frequency band signal and a low frequency band signal; performing first encoding according to the high frequency band signal and the low frequency band signal to obtain a first encoding parameter of the current frame; performing second encoding according to the high frequency band signal to obtain a second encoding parameter of the current frame, the second encoding parameter being used for representing information of a tonal component of the high frequency band signal; adjusting, according to the information of the tonal component of the high frequency band signal, a spectrum of the high frequency band signal subjected to frequency band expansion, to obtain an adjusted spectrum of the high frequency band signal; performing third encoding according to the adjusted spectrum of the high frequency band signal to obtain a third encoding parameter; and performing code stream multiplexing on the first encoding parameter, the second encoding parameter, and the third encoding parameter to obtain an encoding code stream of the current frame.
Inventors:
XIA BINGYIN (CN)
LI JIAWEI (CN)
WANG ZHE (CN)
LI JIAWEI (CN)
WANG ZHE (CN)
Application Number:
PCT/CN2021/104087
Publication Date:
January 06, 2022
Filing Date:
July 01, 2021
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G10L19/02; G10L19/008; G10L19/16
Foreign References:
| CN104103276A | 2014-10-15 | |||
| CN101662288A | 2010-03-03 | |||
| CN103971694A | 2014-08-06 | |||
| CN104584124A | 2015-04-29 | |||
| CN101620854A | 2010-01-06 | |||
| CN202010632030A | 2020-07-03 |
Other References:
See also references of EP 4170651A4
Attorney, Agent or Firm:
BEIJING RUN ZEHENG INTELLECTUAL PROPERTY LAW FIRM (CN)
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