data compression link collection

German / Deutsch

Various topics in German language

Home page of MPEG2/MPEG4 Audio on Fraunhofer IIS site

Here Fraunhofer IIS institute provides description of it`s AAC related technologies.


Posted in June 25th, 2007

Arithmetic Coding revealed - A guided tour from theory to praxis

An updated and translated version of our German paper “Proseminar Datenkompression - Arithmetische Kodierung” from 2001. To the best of our knowledge, it is the first comprehensive paper that describes the whole way from the basic principles of AC up to a simple implementation, fully documented with C++ source code.

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Posted in November 6th, 2004


Yet another Windows archiving program. PowerArchiver comes with a nice long list of supported formats: ZIP, CAB, LHA (LZH), TAR, TAR.GZ, TAR.BZ2, BH, RAR, ARJ, ARC, ACE, ZOO, GZ, BZIP2, XXE, and UUE. Plus a built-in viewer for JPG, GIF, and a few other formats.

Release 9.0 of PowerArchiver shipped July, 2004.

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Posted in July 16th, 2004


There are two programs named SimplyZip. This is the free one from Germany. This program has an awesome list of supported archives formats.

Version 1.1 is shipping as of June, 2004


Posted in June 14th, 2004


A free self-extractor bundler, it can take a standard Zip file and convert it into a self-extracting EXE, or take a self-extracting EXE and turn it into a Zip file. Free for non-commercial use, lots of nice new features in the 2.0 release.

Version 2.0 is shipping as of May, 2004.


Posted in May 31st, 2004


Yet another free Zip program with the usual cast of features. Supports a pretty good variety of archives, runs under Win32 only, etc.

Filzip 3.0.1 is shipping in May, 2004.

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Posted in May 15th, 2004


GermaniXEncoder is a universal Transcoder for various sound formats like MP3, MP2, Real Audio, WMA, Ogg Vorbis, ALF2CD, DSP, GSM, G.721, G.723, G.726, RAW, PCM, ADPCM, uLaw, aLaw, MPC, and Monkeys Audio. In addition, the Encoder has a transformer for some transforming features, an Audio Recorder for recording from all input sources to mp3, mp2, pcm, adpcm, wma and ogg-vorbis. You can also split large MP3 files with their CUE sheets into songs.

Version 1.80.1195 RC2 was shipping as of Februaru, 2002.


Posted in February 22nd, 2004


PentaZip has a very nice feature set, supports advanced encryption, large archives, Windows shell integration, and all the other good stuff you’ve come to expect. Also supports a wide variety of languages.

Release shipped in November, 2003

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Posted in November 26th, 2003


The software reviewer at the SlaughterHouse speculated that commercial developers of zip programs ought to just pack it in when they see how good QuickZip is. If you agree or disagree, why not post an evaluation here so we can benefit from your experience? It seems to be free, plus has support for Chinese and several European languages.

Release 3.05 is shipping as of November, 2003.


Posted in November 16th, 2003


Zipserver is a little HTTP server that serves up static documents from inside Zip files. Great way to put manuals or archived documents on line, don’t you think?


Posted in November 8th, 2003

Redundanz - Lempel-Ziv-Kodierung

A lecture in German on LZ coding.

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Posted in September 28th, 2003

JPEG 2000 Dropper

A free Max OS X program that converts your images to JPEG 2000.

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Posted in August 11th, 2003


Zipbit is yet another inexpensive Win32 archiver with support for a wide range of archive types. Creates SFX files, integrates with Windows Explorer, and has localized versions for English, German, and Russian.

Version 1.05 is shipping as of April, 2003.


Posted in April 14th, 2003

Grundlagen des Burrows-Wheeler-Kompressionsalgorithmus

This is another German preprint of Jürgen Abel describing the principles of the Burrows-Wheeler Compression Algorithm. An
implementation of a BWT based compressor with a compression rate of 2.25 bps on the Calgary Corpus is presented. The paper will be
published in the German journal “Informatik - Forschung und Entwicklung”, Springer-Verlag Heidelberg, Association for Informatics
(Gesellschaft für Informatik eV.)

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Posted in April 14th, 2003

Digital Photography from Agfa

A complete short course on digital photography from Agfa. It shows up here because Lesson 6 is on The Right Compression. You get a discussion of various formats, including GIF, JPEG, JPEG2K, and PNG. Best of all, it looks like the entire page is available in English, German, Spanish, and Portuguese.


Posted in March 21st, 2003

Verlustlose Datenkompression auf Grundlage der Burrows-Wheeler-Transformation

This is a preprint of a paper by Jürgen Abel describing the functionality
of a basic but quite fast Burrows-Wheeler compressor. Jürgen reports that this will be published in PIK, a German-language journal on Communications and Information Theory.

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Posted in March 21st, 2003

EzZip Suitcase

This product bills itself as the “Ultimate Multilingual User Friendly” compression tool. The usual Zip features plus support for six different languages. Fifteen day free trial download.

Reader Donald J. says Excellent zip utility and definitely the easiest I have ever used.

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Posted in February 22nd, 2003


BonkEnc is an audio CD ripper and an encoder for various audio formats. It can produce Ogg Vorbis, MP3 and BONK files. More formats are available through plug-ins.


Posted in January 19th, 2003

AG Information und Komplexität

A nice set of links to various resources related to info theory and data compression. German language.


Posted in June 6th, 2002

Fractal Image Compression

Online demos of Fractal compression and decompression. Available in English, French, and German.


Posted in June 4th, 2002


ZipCentral is a free and easy to use zip file manager with all the utilities you need to manage your zip files. The goal of ZipCentral is to be the most robust freeware zip-package you can find today. It is a great tool for the beginner as well as the expert. Working with zip files has never been easier!


Posted in May 16th, 2002


This company sells an IP core that performs lossless data compression. Not sure what algorithm they are using, it is described as “GEMAC’s data compression algorithm.” This algorithm was first published at DCC ‘95, and is described as a hybrid of ZL1 and ZL2, created with the goal of maximizing compression rate.


Posted in May 14th, 2002

Proseminar Datenkompression - Arithmetische Kodierung

This page gives an introduction to Arithmetic Coding and shows how to implement it using floats or integers. There is also a proof of the efficiency of the algorithms, along with visualization and Win32 binaries. This page is in English and includes links to material in both German and English. user Juergen Abel found the site quite good: Clear description, especially the explanation of the renormalisation part, full source code.

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Posted in April 15th, 2002

Reversible Kompressionsalgorithmen

What appears to be a discussion of Lossless compression algorithms, including Huffman coding, Arithmetic Coding, LZW, LZSS, and LZH.

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Posted in December 24th, 2001

Irreversible Kompressionsalgorithmen

A study of lossy compression algorithms, including discussion of JPEG, MPEG, and the DCT.


Posted in December 24th, 2001


A big survey paper of data compression techniques by Joachim Schwarz und Guido Sörmann. German language.

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Posted in December 24th, 2001

Compact Pro

Compact Pro is a shareware file compression and archival utility for the Mac. It compresses and stores files in “archives” which may span multiple diskettes. Compact Pro supports data encryption (US and Canadian users only) and self-extracting archives.


Posted in July 25th, 2001


This page gives short descriptions of MPEG and H.261 in German. Different systems of coding color information are described as well. Brief, but useful if you don’t want to get bogged down in details.


Posted in June 20th, 2001


Luratech has plugins and an SDK for both their proprietary format and JPEG2000. Products come in a dizzying array of options, ActiveX controls, C-SDK, Java-SDK, plugins for PhotoShop or browsers. Note that some of their products can now be downloaded as freeward!

Note: What was once LuraTech is now Algo Vision LuraTech.

Reader Tom H. says: Luratech is the fastest licensable SDK out there right now

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Posted in May 16th, 2001

Publications of Tilo Strutz

Links to the papers of Tilo Strutz, concentrating on wavelet based compression. Some papers published in German. Note that Tilo Strutz has added a textbook on image compression to his list of publications.


Posted in January 4th, 2001