audio compression format designed for speech. The Speex Project aims to lower the barrier of entry for voice applications by providing a free alternative to expensive proprietary speech codecs. Moreover, Speex is well-adapted to Internet applications and
The Portable Network Graphics (PNG) is a format for storing compressed raster graphics. The compression engine is based on the Deflate method [RFC1951], designed by PKWare and originally used in PKZIP.
At4J provides Java support for reading and creating Zip and Tar archives. It also comes with third-party compression libraries for bzip2 and LZMA support. At4J supports more Zip capabilities and compression methods than Java's built-in Zip classes, such as Unix file metadata and bzip2 compression.
The Lempel-Ziv Markov-chain Algorithm is a very effective and relatively fast compression technique used in the ‘7z’ format of the 7-Zip archiver. This Package provides provides implementations of LzmaInputStream and LzmaOutputStream that interact with underlying LZMA encoders and decoders running in separate threads.
T. Strutz. 4th International ITG Conference on Source and Channel Coding, (2002)source code available from http://www.embl-hamburg.de/~tilo/Software/CoBALP.tar.gz.