Fast Huffman encoding algorithms in MPEG-4 advanced audio coding

Grzegorz Brzuchalski

doi:10.1117/12.2075008

25 November 2014 Fast Huffman encoding algorithms in MPEG-4 advanced audio coding

Grzegorz Brzuchalski

Proceedings Volume 9290, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2014; 92902S (2014) https://doi.org/10.1117/12.2075008
Event: Symposium on Photonics Applications in Astronomy, Communications, Industry and High-Energy Physics Experiments, 2014, Warsaw, Poland

Abstract

This paper addresses the optimisation problem of Huffman encoding in MPEG-4 Advanced Audio Coding stan- dard. At first, the Huffman encoding problem and the need of encoding two side info parameters scale factor and Huffman codebook are presented. Next, Two Loop Search, Maximum Noise Mask Ratio and Trellis Based algorithms of bit allocation are briefly described. Further, Huffman encoding optimisation are shown. New methods try to check and change scale factor bands as little as possible to estimate bitrate cost or its change. Finally, the complexity of old and new methods is calculated, compared and measured time of encoding is given.

Citation Download Citation

Grzegorz Brzuchalski "Fast Huffman encoding algorithms in MPEG-4 advanced audio coding", Proc. SPIE 9290, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2014, 92902S (25 November 2014); https://doi.org/10.1117/12.2075008

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