Energy balance in advanced audio coding encoder bit-distortion loop algorithm

Grzegorz Brzuchalski; Grzegorz Pastuszak

doi:10.1117/12.2035278

25 October 2013 Energy balance in advanced audio coding encoder bit-distortion loop algorithm

Grzegorz Brzuchalski, Grzegorz Pastuszak

Proceedings Volume 8903, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2013; 89031T (2013) https://doi.org/10.1117/12.2035278
Event: Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2013, 2013, Wilga, Poland

Abstract

The paper presents two techniques of balancing energy in ScaleFactor bands for Advanced Audio Coding. The techniques allows the AAC encoder to get a better audio quality. The first one modifies Scale Factors assigned to each band after the quantization whereas the second finds and changes offsets in the quantization - just before rounding down. The implementations of the algorithms have been tested and results discussed. Results show that these techniques significantly improve the quality. At last hardware implementation possibilities are discussed.

Citation Download Citation

Grzegorz Brzuchalski and Grzegorz Pastuszak "Energy balance in advanced audio coding encoder bit-distortion loop algorithm", Proc. SPIE 8903, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2013, 89031T (25 October 2013); https://doi.org/10.1117/12.2035278

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