Title :
Scalefactor based bit shift FGS audio coding
Author :
Chen, Fang-Chu ; Chiu, Te-Ming
Author_Institution :
Comput. & Commun. Res. Labs., Ind. Technol. Res. Inst., Taiwan
Abstract :
In this paper, a method for applying psychoacoustic effects into the reformation of an MPEG-4 bit sliced arithmetic coded (BSAC) scalable audio bitstream is presented. The method is to rearrange the compressed information based on the scalefactors calculated by the psychoacoustics model in order to reflect the different subjective significance of the compressed data. At low bit rate it improves the coding efficiency by a considerable amount.
Keywords :
arithmetic codes; audio coding; data compression; speech coding; video coding; BSAC scalable audio bitstream; MPEG-4 bit sliced arithmetic coding; fine granularity scalability; psychoacoustic effects; scalefactor based bit shift FGS audio coding; Audio coding; Bit rate; Ear; Humans; MPEG 4 Standard; Psychoacoustic models; Psychology; Quantization; Streaming media; Video coding;
Conference_Titel :
Advanced Information Networking and Applications, 2005. AINA 2005. 19th International Conference on
Print_ISBN :
0-7695-2249-1
DOI :
10.1109/AINA.2005.304
