[link] [не пропадать же добру =] M. Hans and R. W. Schafer. "Lossless compression of digital audio". IEEE Signal Processing Magazine, Volume 18, Issue 4, Pages 21-32, July 2001

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Автор: Nван Павлов,
Россия, 12 августа 2004 года в 15:23:14



Keyword(s): audio cooling; lossless compression; Internet audio

Abstract: The first part of this paper surveys and classifies the best performing currently available lossless compression algorithms for stereo-CD-quality digital audio signals sampled at 44.1 kHz and quantized to 16 bits. This study finds that these algorithms appear to have reached a limit in compression that is very modest compared to what can be achieved with lossy audio coding technology. With this limit as a target, we designed a computationally efficient algorithm for losslesss audio compression (which we call AudioPaK). This new lossless compression algorithm uses only a small number of integer arithmetic operations and performs as well, or better than most state-of-the-art lossless compression algorithms. The main operations of the algorithm are prediction with integer coefficients and Golomb-Rice coding. The second part of the paper presents the complete architecture of AudioPaK including suggestions on parallelizing parts of the algorithm using the MMX instruction set.


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