Efficient bit allocation algorithm for MPEG-4 advanced audio coding

Cheng Han Yang*, Hsueh-Ming Hang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

In this paper, a new bit allocation algorithm, called EBFOS (Enhanced BFOS), is proposed for the MPEG-4 Advanced Audio Coding (AAC) scheme. The notion of "bit-use efficiency" is suggested and the basic idea behind our approach is "give bits to the band with the maximum NMR gain per bit" or "retrieve bits from the band with the maximum bits per NMR loss", which is similar to the basic concept of the generalized BFOS (Breiman, Friedman, Olshen, and Stone) algorithm. However, the inter-band dependency of coding process in AAC is also taken into consideration in our approach. Simulation results show that the performance of the EBFOS scheme is significantly better than that of the MPEG-4 AAC Verification Model and is close to that of the trellis-based scheme, which achieves the minimum of a predefined NMR cost function. Also proposed in this paper is a fast version of our algorithm to reduce its computational complexity.

Original languageEnglish
Title of host publicationConference Record of the 40th Asilomar Conference on Signals, Systems and Computers, ACSSC '06
Pages2119-2124
Number of pages6
DOIs
StatePublished - 1 Dec 2006
Event40th Asilomar Conference on Signals, Systems, and Computers, ACSSC '06 - Pacific Grove, CA, United States
Duration: 29 Oct 20061 Nov 2006

Publication series

NameConference Record - Asilomar Conference on Signals, Systems and Computers
ISSN (Print)1058-6393

Conference

Conference40th Asilomar Conference on Signals, Systems, and Computers, ACSSC '06
CountryUnited States
CityPacific Grove, CA
Period29/10/061/11/06

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  • Cite this

    Yang, C. H., & Hang, H-M. (2006). Efficient bit allocation algorithm for MPEG-4 advanced audio coding. In Conference Record of the 40th Asilomar Conference on Signals, Systems and Computers, ACSSC '06 (pp. 2119-2124). [4176952] (Conference Record - Asilomar Conference on Signals, Systems and Computers). https://doi.org/10.1109/ACSSC.2006.355142