New recursive algorithms for the forward and inverse MDCT

Author

Nikolajevic, Vladimir ; Fettweis, Gerhard

Author_Institution

Mannesmann Mobilfunk Chair for Mobile Commun. Syst., Dresden Univ. of Technol., Germany

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

51

Lastpage

57

Abstract

Forward and inverse MDCT (modified discrete cosine transform) are two of the most computationally intensive operations in the MPEG audio coding standard. We derive sinusoidal recursive formulas for transforming kernels of the MDCT and IMDCT. Then we efficiently implement general length MDCT and IMDCT using the regressive structure derived from the sinusoidal recursive formulas. The proposed regular structure is particularly suitable for parallel VLSI realization. Our solution requires less hardware than a recently proposed one

Keywords

VLSI; audio coding; discrete cosine transforms; parallel processing; recursive functions; transform coding; MPEG audio coding standard; forward modified discrete cosine transform; inverse modified discrete cosine transform; parallel VLSI realization; recursive algorithms; Audio coding; Communication standards; Decoding; Discrete cosine transforms; Filters; Forward contracts; Hardware; Kernel; Mobile communication; Very large scale integration;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Systems, 2001 IEEE Workshop on

Conference_Location

Antwerp

ISSN

1520-6130

Print_ISBN

0-7803-7145-3

Type

conf

DOI

10.1109/SIPS.2001.957330

Filename

957330