Lossless Predictive Audio Compression: Difference between revisions

Revision as of 00:22, 28 December 2021

Lossless Predictive Audio Compression (LPAC) is a legacy lossless audio format.

Created by Tilman Liebchen at the Technische Universität Berlin, it was maintained until 2003 when it was selected as basis for the development of MPEG-4 ALS Audio Lossless coding (released in 2006).

LPAC was at one point relatively popular among lossless formats, as an encoder/decoder was available free of charge (for noncommercial purposes, and closed-source) for Windows, Linux and Solaris, along with a library that made integration of LPAC encoding and decoding into other applications relatively easy. The website offered instructions for Exact Audio Copy integration. LPAC was also much more efficient and featureful than the major lossless audio format of the 1990s, Shorten.

Addtional Reading

LPAC website
Further description of the algorithm
Lossless Codec Comparison originally by Rjamorim

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-'''Lossless Predictive Audio Compression''' ('''LPAC''') is a [[lossless]] audio archiver created by the german engineer Tilman Liebchen.
+'''Lossless Predictive Audio Compression''' ('''LPAC''') is a legacy [[lossless]] audio format.
-It was a relatively popular format at one point because, even though not being open source, there were versions available for Linux and Solaris. A library also was available, making integration of LPAC encoding and decoding into other applications relatively easy. It was also much more efficient and featureful than the biggest competitor at the time, [[Shorten]].
+Created by Tilman Liebchen at the Technische Universität Berlin, it was maintained until 2003 when it was selected as basis for the development of [https://www.nue.tu-berlin.de/menue/forschung/forschungsgebiete/datenkompression_und_uebertragung/mpeg_4_audio_lossless_coding_als/parameter/en/ MPEG-4 ALS Audio Lossless coding] (released in 2006).
-These days, it lost most of its popularity. In the multiplatform front to [[FLAC]], in the efficiency front to [[Monkey's Audio]] and [[OptimFROG]] and when it comes to feature richness arguably to [[WavPack]].
+LPAC was at one point relatively popular among lossless formats, as an encoder/decoder was available free of charge (for noncommercial purposes, and closed-source) for Windows, Linux and Solaris, along with a library that made integration of LPAC encoding and decoding into other applications relatively easy.  The website offered instructions for [[Exact Audio Copy]] integration.  LPAC was also much more efficient and featureful than the major lossless audio format of the 1990s, [[Shorten]].
-Recently, mr. Liebchen worked on what will be the standard lossless encoding scheme in MPEG-4 - [http://www.nue.tu-berlin.de/menue/mitarbeiter/ehemalige_mitarbeiter/tilman_liebchen/lpac_-_lossless_audio_codec_for_windows_and_linux/ MPEG-4 ALS] (Audio Lossless coding). As of april 2005, the standardization process is in its final stages.
 == Addtional Reading ==
 * [http://www.nue.tu-berlin.de/menue/mitarbeiter/ehemalige_mitarbeiter/tilman_liebchen/lpac_-_lossless_audio_codec_for_windows_and_linux/ LPAC website]
-* [[Lossless_comparison|Lossless Codec Comparison]] by Rjamorim
+* [https://www.nue.tu-berlin.de/fileadmin/fg97/03_Team/Liebchen/LPAC/lpacarc.html Further description of the algorithm]
+* [[Lossless_comparison|Lossless Codec Comparison]] originally by Rjamorim
 [[Category:Codecs]]