New 2n discrete cosine transform algorithm using recursive filter structure

Wan Chi Siu, Yuk Hee Chan, Lap Pui Chau

Research output: Journal article publicationConference articleAcademic researchpeer-review


It is always desirable to look for more efficient algorithms for the realization of the discrete cosine transform (DCT). In this paper, we generalize a formulation for converting a length-2n DCT into n groups of equations, then apply a novel technique for its implementation. The sizes of the groups are 2m, for m = n-1, ...., 0. While their structures are extremely regular. The realization can then be converted into the simplest recursive filter form, which is of particularly simple for practical implementation.
Original languageEnglish
Pages (from-to)1169-1172
Number of pages4
JournalICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Publication statusPublished - 1 Jan 1995
EventProceedings of the 1995 20th International Conference on Acoustics, Speech, and Signal Processing. Part 2 (of 5) - Detroit, MI, United States
Duration: 9 May 199512 May 1995

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Signal Processing
  • Acoustics and Ultrasonics


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