Fast implementation of MPEG audio coder using recursive formula with fast discrete cosine transforms

Din Yuen Chan, Jar-Ferr Yang, Chun Chin Fang

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

For cosine-modulated multirate subband filtering, we propose two implementation algorithms to reduce the computational complexity. First, we develop a recursive algorithm to further decrease the computation of polyphase subband filtering suggested in Nussbaumer and . Vetterli. Since the cosine modulation can be implemented by the discrete cosine transform (DCT), we combine both fast decimation-in-time (DIT) and decimation-in-frequency (DIF) DCT methods to further reduce the computation. Consequently, the recursive formula with the mixed fastDCT method requires about 13.2% of the multiplications and 41.6% of the additions recommended by ISO Std. ISO-IEC JTCI/SC2AVG11.

Original languageEnglish
Pages (from-to)144-148
Number of pages5
JournalIEEE Transactions on Speech and Audio Processing
Volume4
Issue number2
DOIs
Publication statusPublished - 1996 Dec 1

All Science Journal Classification (ASJC) codes

  • Software
  • Acoustics and Ultrasonics
  • Computer Vision and Pattern Recognition
  • Electrical and Electronic Engineering

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