Archives
Kexis
An open source lossless audio file compressor.
http://sourceforge.net/projects/kexis/Pngcrush
From the site: Pngcrush is an optimizer for PNG (Portable Network Graphics) files. It can be run from a commandline in an MSDOS window, or from a UNIX or LINUX commandline. .
http://pmt.sourceforge.net/pngcrush/Information on lossy audiocoding and the MPEGplus-project
Mpegplus is an open source lossy encoder that the author apparently has created in response to dissatisfaction with existing MP3 encoders. MP+ has plugins for WinAmp and other players.
http://www.personal.uni-jena.de/~pfk/mpp/audiocoder_english.htmlread more from " Information on lossy audiocoding and the MPEGplus-project "
mp3 Decoder Tests
The author of this page clearly has a bone to pick with some of the MP3 decoders out there. From the site: This site contains test results on a number of mp3 decoders. Such a test wouldn’t be necessary if all decoders worked properly, but unfortunately they don’t. In fact the outputs of many popular […]
http://web.archive.org/web/20020124200304/http://privatewww.essex.ac.uk/~djmrob/mp3decoders/intro.htmlQdesign
The folks at Qdesign have a new audio encoding format they’d like you to use.
http://www.qdesign.com/Listening Test Using Male Opera Voice
A set of subjective tests of various encoders.
http://fastforward.iwarp.com/1400.htmlAnalysis of Microsoft Audio Codec
Real takes a whack at their chief competitor, Microsoft. Looks like they put some time and effort into this.
http://www.real.com/msaudio/Fractal Compression
A giant bibliography with pointer to on-line papers, as well as some basic information on the state of the art. Not for the timid or the beginner.
ftp://axes.informatik.uni-leipzig.de/pub/Fractal/index.htmlThe Official daxaif Home Page
From the site: daxaif is a no-loss audio compression program which performs live capture or converts audio files, movie sound tracks, or audio CD tracks into a compressed “.dax” file format. This format allows fast locating and selection of audio passages through the use of a clickable compression-factor map. The selections can be played or […]
http://www.dakx.com/daxaif/Creating a Zip file in Java
This example from Sun shows how to create a file using the library components in java.util.zip.
http://developer.java.sun.com/developer/codesamples/examplets/java.util.zip/169.htmlPerformance of a Software MPEG Video Decoder
This paper discusses the design and development of a sofware MPEG decoder, which presumably is the one that can be found in other links to the Berkely MPEG group. Paper available in both Postcript and PDF.
http://bmrc.berkeley.edu/research/publications/1993/124/124.htmlread more from " Performance of a Software MPEG Video Decoder "
Realtime MPEG Video via Software Decompression on a PA-RISC Processor
According to the abstract, this is the first paper to describe realtime decompression of an MPEG stream at 30 fps. It’s timestamped 9/98, but I believe the paper was published in 1994.
http://www.ee.princeton.edu/~rblee/HPpapers/compcon_mpeg.pdfread more from " Realtime MPEG Video via Software Decompression on a PA-RISC Processor "
ACT - PC Archiver Index
Jeff Gilchrist maintains the well known Archive Comparison Test site, which pits all the compressors of the world against one another. This page on that site has links to the all those archivers. Lots of links.
http://compression.ca/act-index.htmlACT - Mac Archiver Index
Jeff Gilchrist maintains the well known Archive Comparison Test site, which pits all the compressors of the world against one another. This page on that site has links to the all those archivers. Lots of links.
http://compression.ca/mac/act-index.htmlMPEG-1 Description
A short description of the MPEG-1 standard from the official site.
http://www.chiariglione.org/mpeg/standards/mpeg-1/mpeg-1.htmMPEG-2 Description
A short description of the MPEG-2 standard from the official site. Brief, but includes some nice pictures an words.
http://www.chiariglione.org/mpeg/standards/mpeg-2/mpeg-2.htmMPEG-7 Description
An overview of the MPEG-7 standard from the official site. There is quite a bit of detail on this page, making it a combination of a standard, FAQ, and overview.
http://www.chiariglione.org/mpeg/standards/mpeg-7/mpeg-7.htmMPEG-21 Overview
This page contains a description of the emerging MPEG-21 standard, which is a multimedia wrapper specification.
http://www.chiariglione.org/mpeg/standards/mpeg-21/mpeg-21.htmMPEG Achievements and Overview
If you want to know more about MPEG-1,2,4,7, and 21, this is a good starting place.
http://www.chiariglione.org/mpeg/mpeg_general.htmMPEG-X FAQs
A set of links to the FAQs maintained by the MPEG committee. This includes information on the emerging MPEG-21 standard, plus oldies like MPEG-1 and MPEG-2. MPEG-4 and MPEG-7 are represented as well.
http://www.chiariglione.org/mpeg/faq.htmWiZ 5.02
A graphical front end for Zip and UnZip. Binaries available for multiple varieties of Windows.
http://www.ctan.org/tex-archive/tools/zip/info-zip/WiZ.htmlPower Compressor
Image Power makes this product which compresses documents using JBIG, GIF, and JPEG2000 encoders. This product is supposed to help you with web publishing, archiving, and image management.
http://www.imagepower.com/products/desktop/power_compressor.htmlPower SDK
Image Power makes a C++ SDK that performs both document and image compression. This supports JBIG2, MRC (Mixed Raster Content), and plugins for web browsers.
http://www.imagepower.com/products/desktop/power_sdk.htmlRecent Info-ZIP News and Ancient Info-ZIP History
Info-ZIP News, History and Other Stuff
http://www.ctan.org/tex-archive/tools/zip/info-zip/Info-ZIP2.htmlread more from " Recent Info-ZIP News and Ancient Info-ZIP History "
Zip 2.3
The InfoZip project’s page for Zip, their free archive program that creates PKZip compatible archives
http://www.ctan.org/tex-archive/tools/zip/info-zip/Zip.htmlAn Explanation of the Deflate Algorithm
This includes a brief discussion of Huffman coding, then of LZ77 compression, and finally some of the coding oddities that are found in deflate.
http://www.ctan.org/tex-archive/tools/zip/info-zip/zlib/feldspar.htmlDeflate technical spec in PS format
The deflate technical specification in US size PostScript, by L. Peter Deutsch. This document is the basis for RFC 1951.
http://www.gzip.org/zlib/rfc1951.psDEFLATE Compressed Data Format Specification version 1.3
The deflate technical specification in HTML, by L. Peter Deutsch. This document is the basis for RFC 1951. There are many links to this document stored in various places, but this database will only have links to the versions at www.cdrom.com and the IETF pages.
http://www.gzip.org/zlib/rfc-deflate.htmlread more from " DEFLATE Compressed Data Format Specification version 1.3 "
GZIP file format specification version 4.3
The gzip technical specification in HTML, by L. Peter Deutsch. This document is the basis for RFC 1952. Includes sample CRC code
http://www.gzip.org/zlib/rfc-gzip.htmlread more from " GZIP file format specification version 4.3 "
ZLIB Compressed Data Format Specification version 3.3
The zlib technical specification in HTML, by L. Peter Deutsch and Jean-Loup Gailly.
http://www.gzip.org/zlib/rfc-zlib.htmlread more from " ZLIB Compressed Data Format Specification version 3.3 "
