DRA Audio Coding Standard  

作　　者：MA Wenhua XU Jing MA Yuanzhe YOU Yuli 

机构地区：[1]Department of Computers,Cisco School of Informatics,Guangdong University of Foreign Studies [2]Department of Science and Technology,Guangdong Rising Assets Management Co. [3]Department of Biomedical Science and Technology,South China University of Technology [4]Guangdong Provincial Key Laboratary for Digital Audio Technology

出　　处：《Chinese Journal of Electronics》2014年第3期521-526,共6页电子学报（英文版）

基　　金：supported by the 2012 Guangdong Science and Technology Plan for Commercialization of Advanced and New Technologies(No.2012B010100033);Collaboration of Guangdong and Hong Kong for Major Break-Through in Key Technical Fields(No.2005A-10208005);Fund for Guangdong Provincial Key Labs(No.2005B-60149)

摘　　要：DRA(Dynamic resolution adaptation)audio coding standard was shown to deploy transientlocalized MDCT to effectively suppress pre-echo artifacts and statistic allocation of codebooks to improve the compression efficiency of Huffman coding. Its quantizers and Huffman codebooks are designed in such a way that a signal path of 24 bits is provided throughout the codec so that high audio quality can be delivered if bit rate suffices.Although simple, it delivers state-of-the-arts compression efficiency as shown by five rounds of ITU-R BS.11116 compliant subjective listening tests.DRA （Dynamic resolution adaptation） audio coding standard was shown to deploy transientlocalized MDCT to effectively suppress pre-echo artifacts and statistic allocation of codebooks to improve the compression efficiency of Huffman coding. Its quantizers and Huffman codebooks are designed in such a way that a signal path of 24 bits is provided throughout the codec so that high audio quality can be delivered if bit rate suffices. Although simple, it delivers state-of-the-arts compression efficiency as shown by five rounds of ITU-R BS.11116 compliant subjective listening tests.

关 键 词：Audio coding  Standard  Listening test  Modified discrete cosine transform （MDCT） Huffman coding. 

分 类 号：TN912.2[电子电信—通信与信息系统]