DRA分层音频编码技术  

DRA Layered Audio Coding Technology

作　　者：闫建新 王磊 

机构地区：[1]数字音频编解码技术国家工程实验室,广东深圳518057

出　　处：《电视技术》2014年第17期27-31,共5页Video Engineering

摘　　要：提出了一种与DRA编码算法兼容的分层音频编码算法,其中环绕声分层编码采用了声道分类方式,而单声道/立体声分层编码则以残差再编码作为增强层的框架。分析和测试结果表明该DRA分层编码算法能够提供较好的声音质量,可作为信源编码与信道编码和分层调制技术完美结合应用于我国数字音频广播。A layered audio coding algorithm which is compatible with DRA is presented in the paper. The surround layered coding is based on a channel-classified way, whereas the mono/stereo layered coding is subject to a framework in which the residual is encoded again as the enhanced layer. According to the analysis and testing results, a better audio quality can be provided by the DRA layered coding technology. Meantime, it is appropriate for Chinese digital audio broadcasting as a source coding by perfectly combining with channel coding and layered modulation technologies.

关 键 词：DRA 分层编码 数字音频广播 

分 类 号：TN912-3[电子电信—通信与信息系统]