This paper describes an error resilient source coding approach for variable length codes. The scheme to be presented has been designed to make the Huffman coded scalefactor data of MPEG-2/4 Advanced Audio Coding (AAC) more resilient against transmission errors and has been adopted by the ISO/IEC 14496-3 (MPEG-4 Audio) standard. The scalefactor coding scheme enables bidirectional decoding and enhanced error detection, taking into account the differential coding approach used for scalefactor data. Along with the basic ideas associated with the coding scheme, the paper presents appropriate error concealment strategies, which allow for sophisticated scalefactor reconstruction. Subjective test results are presented in order to illustrate the performance of the discussed approach in the presence of adverse channel conditions.

Authors: Sperschneider, Ralph; Homm, Daniel; Chambat, Louis-Henry
Affiliations: Fraunhofer IIS-A, Erlangen, Germany ; Orpheus Studio, Lille, France(See document for exact affiliation information.)
AES Convention: 112 (April 2002) Paper Number: 5555
Publication Date: April 1, 2002 Import into BibTeX
Subject: Low Bit-Rate Audio Coding
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=11319

Click to purchase paper as a non-member 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 $33 for non-members and is free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD aes19)   /pp2002/pp0205/000236.pdf

Start a discussion about this paper!