Recursive architectures for the forward and inverse modified discrete cosine transforms

Che Hong Chen, Chung Bin Wu, Bin-Da Liu, Jar-Ferr Yang

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

This paper presents recursive architectures for the modified discrete cosine transform (MDCT) and its inverse transform (IMDCT) which are the most complex operations in layer 3 of the MPEG audio coding standard. By rearranging the input data, we first derive two trigonometric equations, which can be represented as the Chebyshev polynomials. Then we demonstrate that the general length of MDCT and IMDCT can be efficiently implemented by the recursive structure. The computational complexity of each data throughput in these two architectures is less than existing related systems by as many as 50%. The proposed regular structure is particularly suitable for parallel VLSI realization.

Original languageEnglish
Pages (from-to)50-59
Number of pages10
JournalIEEE Workshop on Signal Processing Systems, SiPS: Design and Implementation
Publication statusPublished - 2000

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

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