通信学报 ›› 2014, Vol. 35 ›› Issue (6): 148-153.doi: 10.3969/j.issn.1000-436x.2014.06.019

• 学术论文 • 上一篇    下一篇

面向多声道三维音频的和差压缩编码技术

董石,胡瑞敏,杨玉红,王晓晨,涂卫平   

  1. 武汉大学 国家多媒体软件工程技术研究中心，湖北 武汉430079
  • 出版日期:2014-06-25 发布日期:2017-06-29
  • 基金资助:
    国家自然科学基金资助项目;国家自然科学基金资助项目;国家自然科学基金资助项目;国家自然科学基金资助项目;湖北自然科学基金资助项目;湖北自然科学基金资助项目

Three-channel dependent mid/side coding framwork for multichannel 3D audio

Shi DONG,Rui-min HU,Yu-hong YANG,Xiao-chen WANG,Wei-ping TU   

  1. National Engineering Research Center for Multimedia Software, Wuhan University, Wuhan 430079, China
  • Online:2014-06-25 Published:2017-06-29
  • Supported by:
    The National Natural Science Foundation of China;The National Natural Science Foundation of China;The National Natural Science Foundation of China;The National Natural Science Foundation of China;The Natural Science Foundation of Hubei Province;The Natural Science Foundation of Hubei Province

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摘要：

分析了传统基于单声道对的和差(M/S)编码技术，针对三维音频系统的空间特性将其拓展为基于三声道的和差编码技术(3D-M/S)。并提出一种基于3D-M/S的音频编码框架，使其能够压缩任意声道配置的三维音频系统 实验结果表明与独立声道编码相比，所提方法能够在相同码率下提高约25%的客观质量 并且在同等质量下，所提方法引起编解码复杂度的增加约为基于PCA编解码方法的1/3

关键词: 三维音频压缩, VBAP, 和差编码, 多声道音频编码

Abstract:

The conventional mid/side coding method is discussed and generalized to a three-channel dependent M/S cod-ing (3D-M/S) method. Moreover, a codec framework based on 3D-M/S is proposed which enables the 3D-M/S to work for three-dimensional audio systems with more than three channels. It is experimentally shown that proposed framework gets about 25% objective quality improvement compared with independent coding, and only increases about 1/3 com-plexity of the PCA method.

Key words: 3D audio compression, VBAP, M/S coding, multichannel audio coding

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