Title :
A new algorithm on short window MDCT for Dolby AC3
Author :
Zhang, Tao ; Liu, Shuo ; He, Jialin ; Zhang, Hai
Author_Institution :
Tianjin Univ., Tianjin
fDate :
Nov. 28 2007-Dec. 1 2007
Abstract :
Dolby Lab´s AC-3 standard has been widely used in many fields. As an indispensable module, the implementation of MDCT/IMDCT should be optimized in efficiency and structure. There is a variable parameter in the MDCT definition. Many fast algorithms have been presented to implement MDCT, however the difference among the computational structures of different types of MDCT brings inefficiency in code structure. Here a new algorithm on short MDCT using long MDCT ´s computational structure is proposed.
Keywords :
audio coding; Dolby Lab AC-3 standard; computational structures; short window MDCT algorithm; Communication standards; Computational intelligence; Costs; Discrete Fourier transforms; Discrete cosine transforms; Discrete transforms; Engines; Hardware; Helium; Signal processing algorithms; AC-3; Computational structure; MDCT; Short/Long window;
Conference_Titel :
Intelligent Signal Processing and Communication Systems, 2007. ISPACS 2007. International Symposium on
Conference_Location :
Xiamen
Print_ISBN :
978-1-4244-1447-5
Electronic_ISBN :
978-1-4244-1447-5
DOI :
10.1109/ISPACS.2007.4445928
