TurboZIP Express is tightly integrated with Windows Explorer so you can ZIP, UnZIP, CAB, UnCAB, plus E-mail files, all in one quick action. You can compress files to units of any size and
output to HD or FD. It lets you internally view, print or even edit files within Zip..

http://www.filestream.com/tzx/

From the submitter: This site presents a new audio coder design that achieves efficient compression with fine-grain bitrate scalability. Issues regarding scalability are discussed, and a new approach to measuring coding efficiency is presented. A windows command-line demonstration coder is availiable to download. At present the coder achieves subjective transparency at approximately 96 kbit/s/chan, similar to the FhG (non-scalable) MP3 coder.

http://www.scalatech.co.uk/

The name says it all. A research project dedicated to recursive compression.

http://www.geocities.com/hmaxf_urlcr/

The author gives a description of a proposed bijective compression scheme.

http://www.mandala.co.uk/securecompress/index.html

HEI seems to be a company that consults with broadcasters. They have this page which gives a little tutorial that talks about forward error correction and other things of interest to broadcasters.

http://www.heiconsulting.com/mpeg2.html

This RFC defines the 32 Kbps toll quality MIME type. The true specification for G.726 is owned by the ITU, and will not be generally available on the net. So knowing how it is encoded only somewhat useful.

http://www.faqs.org/rfcs/rfc2422.html

An ftp site with various speech codecs, including G.722, GSM, G.711, G.723, G.721, CELP, and LPC. Licensing and ownership of the C source varies.

ftp://ftp.cs.cmu.edu/project/fgdata/speech-compression/

LEADTOOLS is now supporting JPEG2000 in their toolkits by means of this JPEG2000 plugin. Supports both file and stream formats, plus many additional features. Download of sample available.

http://www.leadtools.com/home2/vertmkts/ltjpeg2k.htm

This issue of the Data Compression Newsletter from Dr. Dobb’s Journal looks at an idea for compression that doesn’t quite pan out.

http://www.ddj.com/maillists/compression/0012cm/0012cm001.htm

This issue of the Data Compression Newsletter from Dr. Dobb’s has some sample code showing how one might use Intel’s JPEG library to display JPEG files under Win32.

http://www.ddj.com/maillists/compression/0011cm/0011cm001.htm

This issue of the Data Compression Newsletter from DDJ highlights a few of the better Incredible Claims to come along - including the biggest of all, the Pixelon fraud case.

http://www.ddj.com/maillists/compression/do200007cm/do200007cm001.htm

This issue of the Data Compression Newsletter from Dr. Dobb’s Journal says farewell to Phil Katz, creator of PKZip.

http://www.ddj.com/maillists/compression/do200005cm/do200005cm001.htm

Aware makes a JPEG 2000 Codec and SDK, which includes libraries for both Win32 and UNIX. You can download a demo of their product from the web site should you be willing to provide a bit of contact data.

http://www.aware.com/products/compression/jpeg2000.html

The wavelet warehouse has a large repository of wavelet filters. These are coefficient files only, suitable for use with MATLAB or other software. The page also has links to a couple of PDF-format papers, plus references to a few more not available online.

http://dmsun4.bath.ac.uk/resource/warehouse.htm

The book that accompanies the course of the same name. Russian-language submitter reports that the book has info on RLE, LZW, CCITT Group 3, Jpeg, Wavelet, and Fractal compression.

http://graphics.cs.msu.su/library/our_publications/fractal/index.htm

This is Jeff Gilchrist’s home page. Jeff is the curator of the Archive Compression Test, which presumably keeps him busy.

http://gilchrist.ca/jeff

Java libraries to read various image formats, including many which are compressed. Hence its appearance here.

http://www.geocities.com/marcoschmidt.geo/java-image-coding.html

Another paper by Michael Maniscalo discussing a scheme for Run Length Encoding of data that’s been put through the blocksort transform. His first paper uses fixed length codes, this uses variable lenghts.

http://www.geocities.com/m99datacompression/papers/rle2.html

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.

http://www.lpr.ei.tum.de/courses/seminar/realzeit_bv/mpeg/node1.html

Here’s a nice little frameword for testing PPMD, or for that matter, any other compressor.

http://www.codeproject.com/cpp/ppmd.asp

These guys are responsible for some of the work that took the MP3 standard to its next revision: MP3Pro. They say their current focus is the development and marketing of SBR-enhanced codecs.

http://www.codingtechnologies.com/

Zarak Systems will perform Quality of Service testing using PSQM, the Perceptual Speech Quality Measurement. This web page will tell you a little bit about what that means to you.

http://www.psqm.com/

A comprehensive set of tests on lossless data compression.

http://geocities.com/eri32/

This is reportedly the Fraunhofer patent covering the MP3 compression algorithm.

http://www.mp3-tech.org/docs/5579430.pdf

Intel has a nice document showing how one can optimize the inverse DCT when running on processors with the MMX instructions, such as the Pentium II. Listings include code you can drop into the Independent JPEG Group’s library.
DCL reader Neil H. had this to say: The drop-in replacement for the iDCT of the IJG works fine for 8-bit data (not 12-bit). It reduced total compression time to 2/3 or so of the original cross-platform code. The iDCT itself is supposed to be 4x faster.

http://cedar.intel.com/cgi-bin/ids.dll/content/content.jsp?cntKey=Legacy::irtp_886_11228&c
ntType=IDS_EDITORIAL

PackWord can compress a Microsoft Word document (.doc) file into a smaller, compressed, .doc file. The compressed .doc file is self-extracting: when loaded into Microsoft Word, the compressed document will automatically expand to the original version.

http://www.packword.com/

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

http://www.algovisionluratech.com/

ZDNet reports that MP3 patent holders, Fraunofer Institute and Thomson Multimedia are shopping around a new version of the aging audio standard. Formats such as Microsoft’s Windows Media format have been eating into the MP3 dominance on the net.

http://www.zdnet.com/zdnn/stories/news/0,4586,5083015,00.html?chkpt=zdhpnews01

Stream Machines is selling a dedicate chip that will decode MPEG-1, -2, and -3, along with MP3 and other standards. The chip will be roughly $35 in quantity.

http://www.eet.com/story/OEG20010515S0052

Image Power has their products available for download here, which includes the commercial version of PowerCompressor, and a beta copy of Jasper, a JPEG2000 codec.

http://www.imagepower.com/products/default.asp?url=downloads/default.asp