• DocumentCode
    2172813
  • Title

    A fast algorithm for modified discrete cosine transform

  • Author

    Wang Jlanxin ; Zaiwang, Dong

  • Author_Institution
    Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
  • fYear
    1996
  • fDate
    5-7 May 1996
  • Firstpage
    445
  • Abstract
    This paper presents a fast algorithm for modified discrete cosine transform (MDCT), which is widely used in the coding of wide-band audio signals. By simple time shift and reverse, the MDCT is computed using Lee´s (1984) fast cosine transform (FCT). The number of real multiplications is reduced from 2N2 to (N/2)log2N+N, half of that of the FFT based algorithm. The algorithm renders a simple and symmetric structure
  • Keywords
    audio coding; audio signals; discrete cosine transforms; transform coding; audio coding; fast algorithm; fast cosine transform; modified discrete cosine transform; multiplications; symmetric structure; time reverse; time shift; wideband audio signals; Design engineering; Discrete cosine transforms; Electronic mail; Equations; Image coding; Kernel; Signal design; Signal processing algorithms; Signal synthesis; Wideband;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Communication Technology Proceedings, 1996. ICCT'96., 1996 International Conference on
  • Conference_Location
    Beijing
  • Print_ISBN
    0-7803-2916-3
  • Type

    conf

  • DOI
    10.1109/ICCT.1996.545218
  • Filename
    545218
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2172813