文章基本信息

标题：Audio Transcoding for Audio Streams from a T-DTV Broadcasting Station to a T-DMB Receiver
本地全文：下载
作者：Bang, Kyoung-Ho ; Park, Young-Cheol ; Seo, Jeong-Il 等
期刊名称：ETRI Journal
印刷版ISSN：1225-6463
电子版ISSN：2233-7326
出版年度：2006
卷号：28
期号：5
页码：664-667
语种：English
出版社：Electronics and Telecommunications Research Institute
摘要：We propose an efficient audio transcoding algorithm that can convert audio streams from terrestrial digital television broadcasting service stations to those for terrestrial digital multimedia broadcasting hand-held receivers. The proposed algorithm avoids the complicated psychoacoustic analysis by calculating the scalefactors of the bit-sliced arithmetic coding encoder directly from the signal-to-noise ratio parameters of the AC-3 decoder. The bit-allocation process is also simplified by cascading the nested distortion control loop. Through subjective evaluation, it is shown that the proposed algorithm provides comparable audio quality to tandem coding but it requires much smaller complexity.
关键词：Audio coding;transcoding;AC-3;MPEG-4 BSAC;AAC;T-DTV;T-DMB;scalefactor