MA Wenhua, XU Jing, MA Yuanzhe, YOU Yuli. DRA Audio Coding Standard[J]. Chinese Journal of Electronics, 2014, 23(3): 521-526.
Citation: MA Wenhua, XU Jing, MA Yuanzhe, YOU Yuli. DRA Audio Coding Standard[J]. Chinese Journal of Electronics, 2014, 23(3): 521-526.

DRA Audio Coding Standard

Funds:  This work is 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) and by Fund for Guangdong Provincial Key Labs (No.2005B-60149).
  • Received Date: 2013-03-01
  • Rev Recd Date: 2013-05-01
  • Publish Date: 2014-07-05
  • 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.
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