DRA Audio Coding Standard

作     者：Wenhua Ma Jing Xu Yuanzhe Ma Yuli You 

作者机构：Department of Computers Cisco School of Informatics Guangdong University of Foreign Studies Guangzhou China Department of Science and Technology Guangdong Rising Assets Management Co. Guangzhou China Department of Biomedical Science and Technology South China University of Technology Guangzhou China Guangdong Provincial Key Laboratary for Digital Audio Technology Guangzhou China 

出 版 物：《Chinese Journal of Electronics》 

年 卷 期：2025年第23卷第3期

页      面：521-526页

主　　题：Codecs Audio coding Bit rate Dynamic scheduling Resource management Discrete cosine transforms Huffman coding Standards Signal resolution Commercialization 

摘      要：DRA (Dynamic resolution adaptation) audio coding standard was shown to deploy transient-localized 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.