AES E-Library

A Unified Fast Algorithm for Cosine Modulated Filter Banks in Current Audio Coding Standards

Current audio coding standards, such as MPEG-I layers 1-3, MPEG-II layers 1-4, MPEG-!V, and AC-3, have adopted for compression various forms of the cosine modulated filter banks (CMFBs). It is demonstrated that all modulated cosine transforms can be divided into two modules - the permutation and discrete cosine transform. The derived discrete cosine transforms are either type II, type III, or type IV. A fast computing algorith is proposed that will compute all three types of transforms uniformly. The new fast algorithm has good features with regard to regularity, complexity, and general applicability.

Authors: Liu, Chi-Min; Lee, Wen-Chieh
Affiliation: Department and Institute of Computer Science and Information Engineering, National Chiao Tung University, Hsinchu, Taiwan
JAES Volume 47 Issue 12 pp. 1061-1075; December 1999 Import into BibTeX

Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD aes6)   /jrnl9800/1999/8812.pdf

Start a discussion about this paper!