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The MPEG-4 Audio Lossless Coding (ALS) Standard - Technology and Applications
Citation key 0737Liebchen2005
Author Tilman Liebchen and T. Moriya and N. Harada and Y. Kamamoto and Y. Reznik
Title of Book 119th AES Convention
Year 2005
Address New York
Month oct
Note T. Moriya, N. Harada, Y. Kamamoto: NTT Communication Science Labs; Y. Reznik: RealNetworks Inc.
Abstract MPEG-4 Audio Lossless Coding (ALS) is a new extension of the MPEG-4 audio coding family. The ALS core codec is based on forward-adaptive linear prediction, which offers remarkable compression together with low complexity. Additional features include long-term prediction, multichannel coding, and compression of floating-point audio material. In this paper authors who have actively contributed to the standard describe the basic elements of the ALS codec with a focus on prediction, entropy coding, and related tools. We also present latest developments in the standardization process and point out the most important applications of this new lossless audio format.
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