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Context-Adaptive Arithmetic Coding Scheme for Lossless Bit Rate Reduction of MPEG Surround in USAC Sungyong YOON Hee-Suk PANG Koeng-Mo SUNG Publication IEICE TRANSACTIONS on Information and Systems Vol.E95-D No.7 pp.2013-2016 Publication Date: 2012/07/01 Online ISSN: 1745-1361 DOI: 10.1587/transinf.E95.D.2013 Print ISSN: 0916-8532 Type of Manuscript: LETTER Category: Speech and Hearing Keyword: lossless bit rate reduction, MPEG Surround, USAC, context-adaptive arithmetic coding, Full Text: PDF(250.7KB)>>
Summary: We propose a new coding scheme for lossless bit rate reduction of the MPEG Surround module in unified speech and audio coding (USAC). The proposed scheme is based on context-adaptive arithmetic coding for efficient bit stream composition of spatial parameters. Experiments show that it achieves the significant lossless bit reduction of 9.93% to 12.14% for spatial parameters and 8.64% to 8.96% for the overall MPEG Surround bit streams compared to the original scheme. The proposed scheme, which is not currently included in USAC, can be used for the improved coding efficiency of MPEG Surround in USAC, where the saved bits can be utilized by the other modules in USAC. | ||||||||||
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