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http://dx.doi.org/10.7776/ASK.2009.28.7.618

MPEG-4 ALS - The Standard for Lossless Audio Coding  

Liebchen, Tilman (LG Electronics)
Publication Information
The Journal of the Acoustical Society of Korea / v.28, no.7, 2009 , pp. 618-629 More about this Journal
Abstract
The MPEG-4 Audio Lossless Coding (ALS) standard belongs to the family MPEG-4 audio coding standards. In contrast to lossy codecs such as AAC, which merely strive to preserve the subjective audio quality, lossless coding preserves every single bit of the original audio data. The ALS core codec is based on forward-adaptive linear prediction, which combines remarkable compression with low complexity. Additional features include long-term prediction, multichannel coding, and compression of floating-point audio material. This paper describes the basic elements of the ALS codec with a focus on prediction, entropy coding, and related tools and points out the most important applications of this standardized lossless audio format.
Keywords
Audio Coding; Lossless; Compression; Linear Prediction; MPEG; Standard; ALS;
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1 ISO/IEC 14496-3: 2005/Amd.2: 2006, InformatIon technology - Coding of audio-visual objects - Part 3: Audio, Amendment 2: Audio Lossless Coding (ALS), new audio profiles and BSAC extensions, International Standards Organization, Geneva, Switzerland, 2006
2 ISO/IEC 14496-3: 2009, Information technology - Coding of audio-visual objects - Part 3: Audio $(4^{th}$ Edition), Inter-national Standards Organization, Geneva, Switzerland, 2009
3 Y. Kamamoto, N. Harada, and T. Moriya, "A Multichannel Linear Prediction Method for the MPEG-4 ALS Compliant Encoder," Proc. IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, New Paltz, NY, USA, 2007   DOI
4 T. Liebchen and Y. Reznik, "MPEG-4 ALS: An Emerging Standard for Lossless Audio Coding," Data Compression Con-ference, Snowbird, USA, 2004
5 Y. Reznik, “Coding of Prediction Residual in MPEG-4 Standard for Lossless Audio Coding (MPEG-4 ALS),” Proc. IEEE ICASSP, Montreal, Canada, 2004   DOI
6 G.-O. Glentis, K. Berberidis, and S. Theodoridis, "Efficient Least Squares Adaptive Algorithms For FIR Filtering," IEEE Signal Processing Magazine, July 1999   DOI   ScienceOn
7 T. Moriya and N. Harada and Y. Kamamoto, “An enhanced encoder for the MPEG-4 ALS Lossless Coding standard,” 121st AES Convention, San Francisco, 2006
8 N. S. Jayant and P. Noll, Digital Coding of Waveforms, Prentice-Hall, Englewood Cliffs, New Jersey, 1984
9 Y. Kamamoto, N. Harada, and T. Moriya, "Interchannel Depen-dency Analysis of Biomedical Signals for Efficient Lossless Compression by MPEG-4 ALS," Proc. IEEE ICASSP, Las Vegas, USA, 2008   DOI
10 E. Janssen and D. Reefman, “Super Audio CD: An Intro-duction,” IEEE Signal Processing Magazine, July 2003   DOI   ScienceOn
11 T. Moriya, D. Yang, and T. Liebchen, "Extended Linear Pre-diction Tools for Lossless Audio Coding," Proc. IEEE ICASSP, Montreal, Canada, 2004   DOI
12 ISO/IEC 14496-3:2005, "lnformation technology - Coding of audio-visual objects - Part 3: Audio," lnternational Standards Organization, Geneva, Switzerland, 2005
13 W. B. Kleijn and K. K. Paliwal, Speech Coding and Synthesis, Elsevier, Amsterdam, 1995
14 A. A. M. L. Bruekers, A. W. J. Oomen, R. J. van der Vleuten, and L. M. van de Kerkhof, “Lossless Coding for DVD Audio,” 101st AES Convention, Los Angeles, 1996
15 T. Robinson, "SHORTEN: Simple lossless and near-lossless waveform compression," Technical report CUED/F-INFENG/TR.156, Cambridge University Engineering Department, 1994
16 T. Moriya, D. Yang, and T. Liebchen, "A Design of Lossless Compression for High-Quality Audio Signals," International Congress on Acoustics, Kyoto, Japan, 2004
17 N. Harada, T. Moriya, and Y. Kamamoto, "An implementation of MPEG-4 ALS standard compliant decoder on ARM core CPUs," 125th AES Convention, San Francisco, 2008
18 ISO/IEC 14496-5: 2001/Amd.10: 2007, Information technology - Coding of audio-visual objects - Part 5: Reference Sofware, Amendment 10: SSC, DST, ALS and SLS reference software, International Standards Organization, Geneva, Switzerland, 2007, ALS reference software available at http://www.nue.tu-berlin.de
19 G. Schuller, B. Yu, and D. Huang, "Lossless Coding of Audio Signals Using Cascaded Prediction," Proc. IEEE ICASSP 2001, Salt Lake City, 2001   DOI
20 N. Harada, T. Moriya, H. Sekigawa, and K. Shirayanagi, "Lossless Compression of IEEE Floating-Point Audio Using Approximate-Common-Factor Coding," 118th AES Convention, Barcelona, Spain, 2005
21 Y. Kamamoto, N. Harada, and T. Moriya, “Multichannel Linear Prediction Method Compliant with the MPEG-4 ALS”, IEICE Trans. on Fundamentals of Electronics, Communications and Computer Sciences, vol. E91-A, March 2008   DOI   ScienceOn
22 FLAC - Free Lossless Audio Codec, http://flac.sourceforge.net
23 ISO/IEC JTC1/SC29/WG11 (MPEG), Verification Report on MPEG-4 ALS, Doc. N7686, Nice, France, October 2005, available at http://www.chiariglione.org/mpeg/working_documents/mpeg-04/audio/als_vt.zip
24 ISO/IEC 14496-4: 2004/Amd.19: 2007, Information technology - Coding of audio-visual objects - Part 5: Conformance Testing, Amendment 19: Audio Lossless Coding (ALS), Inter-national Standards Organization, Geneva, Switzerland, 2007
25 ISO/IEC 14496-5: 2001/Amd.10: 2007, Information technology - Coding of audio-visual objects - Part 5: Reference Sofware, Amendment 10: SSC, DST, ALS and SLS reference software, International Standards Organization, Geneva, Switzerland, 2007, ALS reference software available at http://www.nue.tu-berlin.de
26 ISO/IEC JTC1/SC29/WG11 (MPEG), ISO/IEC 14496-3:200x/PDAM 2, ALS Simple Profile and Transport of SAOC, Doc. N10826, London, UK, July 2009
27 T. Liebchen, T. Moriya, N. Harada, Y. Kamamoto, and Y. Reznik, "The MPEG-4 Audio Lossless Coding (ALS) Standard - Technology and Applications," 119th AES Convention, New York, USA, 2005
28 R. Yu and C. C. Ko, "Lossless Compression of Digital Audio Using Cascaded RLS-LMS Prediction," IEEE Trans. Speech and Audio Processing, July 2004   DOI   ScienceOn