Computation of forward and inverse MDCT using Clenshaw's recurrence formula

被引：25
|
作者：
Nikolajevic, V [1 ]
Fettweis, G
机构：
[1] Sony Int Europe GmbH, Ctr Adv Technol, Stuttgart, Germany
[2] Dresden Univ Technol, Dept Elect Engn, Mobile Commun Syst, D-8027 Dresden, Germany
来源：
IEEE TRANSACTIONS ON SIGNAL PROCESSING | 2003年 / 51卷 / 05期
关键词：
audio coding; modified discrete cosine transform (MDCT); MPEG;
D O I：
10.1109/TSP.2002.808123
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The forward and inverse modified discrete cosine transform (MDCT) are two of the most computational intensive operations in the MPEG audio coding standard. In this paper, we used Clenshaw's recurrence formula to transform kernels of the MDCT and IMDCT of the general length. Efficient implementations of MDCT and IMDCT are obtained. The proposed regular structures are particularly suitable for parallel VLSI realization. Our solution requires less hardware, and we achieved significant savings for a number of operations compared with existing related systems.
引用
收藏
页码：1439 / 1444
页数：6
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