Robust critical data recovery for MPEG-4 AAC encoded bitstreams

Abstract : This paper presents a bandwidth-efficient method for improved decoding of critical data generated by the MPEG-4 AAC audio coder when encoded bitstreams are transmitted over noisy channels. The critical data of each encoded frame is estimated using the redundancy due to the correlation between successive frame headers and using an optional CRC as an error-correcting code. Simulation results for an AWGN channel show a substantial link budget improvement (more than 5 dB) compared to a classical hard-decoding method. Once critical data are efficiently estimated, the work of previously proposed joint source-channel decoding techniques to recover the remaining parts of the MPEG4 AAC frames is significantly facilitated.
Type de document :
Communication dans un congrès
Acoustics Speech and Signal Processing (ICASSP), Mar 2010, Dallas, TX, United States. pp.397 - 400, 2010
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https://hal.archives-ouvertes.fr/hal-00648941
Contributeur : Ruijing Hu <>
Soumis le : mardi 6 décembre 2011 - 16:08:42
Dernière modification le : lundi 17 septembre 2018 - 10:04:09

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  • HAL Id : hal-00648941, version 1

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Ruijing Hu, Xucen Huang, Michel Kieffer, Olivier Derrien, Pierre Duhamel. Robust critical data recovery for MPEG-4 AAC encoded bitstreams. Acoustics Speech and Signal Processing (ICASSP), Mar 2010, Dallas, TX, United States. pp.397 - 400, 2010. 〈hal-00648941〉

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