An efficient implementation of the forward and inverse MDCT in MPEG audio coding

Authors
Britanak, V Rao, KR
Citation
V. Britanak et Kr. Rao, An efficient implementation of the forward and inverse MDCT in MPEG audio coding, IEEE SIG PL, 8(2), 2001, pp. 48-51
Citations number
12
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
IEEE SIGNAL PROCESSING LETTERS
ISSN journal
10709908 → ACNP
Volume
8
Issue
2
Year of publication
2001
Pages
48 - 51
Database
ISI
SICI code
1070-9908(200102)8:2<48:AEIOTF>2.0.ZU;2-S
Abstract
The modified discrete cosine transform (MDCT) is employed in subband/transf orm coding schemes as the analysis/synthesis filter bank based on time doma in aliasing cancellation (TDAC). The most efficient implementation of the f orward and inverse MDCT computation for layer III in MPEG-1 and MPEC-2 inte rnational audio coding standards is proposed. It is based on a new fast alg orithm for the forward and inverse MDCT computation in the oddly stacked sy stem. The complete signal flow graphs for the implementation of MDCT and in verse MDCT in layer III are also provided.