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1. WO2022110722 - AUDIO ENCODING/DECODING METHOD AND DEVICE

Publication Number WO/2022/110722
Publication Date 02.06.2022
International Application No. PCT/CN2021/096839
International Filing Date 28.05.2021
IPC
G10L 19/00 2013.1
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
G10L 19/008 2013.1
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
008Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
H04S 3/00 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
SSTEREOPHONIC SYSTEMS
3Systems employing more than two channels, e.g. quadraphonic
CPC
G10L 19/00
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
G10L 19/008
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
008Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
H04S 2420/03
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
SSTEREOPHONIC SYSTEMS 
2420Techniques used stereophonic systems covered by H04S but not provided for in its groups
03Application of parametric coding in stereophonic audio systems
H04S 3/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
SSTEREOPHONIC SYSTEMS 
3Systems employing more than two channels, e.g. quadraphonic
Applicants
  • 华为技术有限公司 HUAWEI TECHNOLOGIES CO., LTD. [CN]/[CN]
Inventors
  • 高原 GAO, Yuan
  • 刘帅 LIU, Shuai
  • 王宾 WANG, Bin
  • 王喆 WANG, Zhe
  • 曲天书 QU, Tianshu
  • 徐佳浩 XU, Jiahao
Agents
  • 深圳市深佳知识产权代理事务所(普通合伙) SHENPAT INTELLECTUAL PROPERTY AGENCY
Priority Data
202011377433.030.11.2020CN
Publication Language Chinese (zh)
Filing Language Chinese (ZH)
Designated States
Title
(EN) AUDIO ENCODING/DECODING METHOD AND DEVICE
(FR) PROCÉDÉ ET DISPOSITIF DE CODAGE/DÉCODAGE AUDIO
(ZH) 一种音频编解码方法和装置
Abstract
(EN) An audio encoding/decoding method and device (101, 1000, 1200, 102, 1100, 1300), for use in reducing the data volume of encoding/decoding to improve the encoding/decoding efficiency. The method comprises: selecting a first target virtual loudspeaker from a preset virtual loudspeaker set according to a first scene audio signal (401); generating a first virtual loudspeaker signal according to the first scene audio signal and attribute information of the first target virtual loudspeaker (402); obtaining a second scene audio signal by using the attribute information of the first target virtual loudspeaker and the first virtual loudspeaker signal (403); generating a residual signal according to the first scene audio signal and the second scene audio signal (404); and encoding the first virtual loudspeaker signal and the residual signal, and writing same into a code stream (405).
(FR) Procédé et dispositif de codage/décodage audio (101, 1000, 1200, 102, 1100, 1300), destinés à être utilisés pour réduire le volume de données de codage/décodage afin d'améliorer l'efficacité de codage/décodage. Le procédé consiste à : sélectionner un premier haut-parleur virtuel cible à partir d'un ensemble de haut-parleurs virtuel prédéfini en fonction d'un premier signal audio de scène (401) ; générer un premier signal de haut-parleur virtuel en fonction du premier signal audio de scène et des informations d'attribut du premier haut-parleur virtuel cible (402) ; obtenir un second signal audio de scène à l'aide des informations d'attribut du premier haut-parleur virtuel cible et du premier signal de haut-parleur virtuel (403) ; générer un signal résiduel en fonction du premier signal audio de scène et du second signal audio de scène (404) ; et coder le premier signal de haut-parleur virtuel et le signal résiduel, et écrire ceux-ci dans un flux de code (405).
(ZH) 一种音频编解码方法和装置(101, 1000, 1200, 102, 1100, 1300),用于减少编解码的数据量,以提高编解码效率。该方法包括:根据第一场景音频信号从预设的虚拟扬声器集合中选择出第一目标虚拟扬声器(401);根据该第一场景音频信号和该第一目标虚拟扬声器的属性信息生成第一虚拟扬声器信号(402);使用该第一目标虚拟扬声器的属性信息和该第一虚拟扬声器信号获得第二场景音频信号(403);根据该第一场景音频信号和该第二场景音频信号生成残差信号(404);对该第一虚拟扬声器信号和该残差信号进行编码,并写入码流(405)。
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