A fast algorithm of integer MDCT for lossless audio coding

Author

Haibin, Huang ; Rahardja, Susanto ; Rongshan, Yu ; Xiao, Lin

Author_Institution

Inst. for Infocomm Res., Singapore, Singapore

Volume

4

fYear

2004

fDate

17-21 May 2004

Abstract

A new fast algorithm to implement integer modified discrete cosine transform (IntMDCT) is proposed. It is shown that the total rounding operations required for this algorithm are only 2.5N, where N is the block size. As a result, its approximation error is far less than that of directly converted integer transforms. At the same time, the complexity is greatly reduced, which results in improved performance of a lossless audio coding system employing the IntMDCT in terms of compression ratio and complexity costs.

Keywords

approximation theory; audio coding; computational complexity; discrete cosine transforms; matrix algebra; transform coding; approximation error; complexity costs; compression ratio; directly converted integer transforms; integer modified DCT; integer modified discrete cosine transform; lossless audio coding; permutation matrix; transform matrix; Approximation error; Audio coding; Costs; Discrete cosine transforms; Discrete transforms; Image sampling; Matrix decomposition; Neural networks; Performance loss; Prototypes;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2004. Proceedings. (ICASSP '04). IEEE International Conference on

ISSN

1520-6149

Print_ISBN

0-7803-8484-9

Type

conf

DOI

10.1109/ICASSP.2004.1326792

Filename

1326792