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Zoo is used to create and maintain collections of files in compressed form. It uses a Lempel-Ziv compression algorithm that gives space savings in the range of 20% to 80% depending on the type of file data. Zoo can store and selectively extract multiple generations of the same file. Data can be recovered from damaged archives by skipping the damaged portion and locating undamaged data with the help of fiz(1).

The Astro::ADS module is an objected orientated Perl interface to the Astrophysics Data System (ADS) abstract service. The ADS is a NASA-funded project whose main resource is an Abstract Service, which includes four sets of abstracts: 1) astronomy and astrophysics, containing 719,449 abstracts; 2) instrumentation, containing 608,834 abstracts; 3) physics and geophysics, containing 1,079,814 abstracts; and 4) Los Alamos preprint server, containing 4,104 abstracts. Each dataset can be searched by author, object name (astronomy only), title, or abstract text words.

Enscribe creates digital audio watermark images from photographic images. These images can only be seen using a third party frequency vs time display, such as Baudline (audio/baudline). Images are still visible even after such audio mangling techniques as MP3/Ogg compression, reverb, chorus, etc. Heavy EQ and flange can stripe out vertical sections, but they can also ruin an otherwise good song as well.

The last.fm fingerprint library The fingerprinting process works in two steps: 1. Get PCM data and pass it to *fplib* which will return byte string to be submitted to the last.fm HTTP fingerprint service. This will return a number (fingerprintID). 2. Query the last.fm API with the fingerprintID and obtain the metadata in xml format. The lastfmfpclient directory contains an example of application that uses fplib and queries both services.

Open Cubic Player first appeared around December 1994 as a DOS binary-only module player. It supported many sound cards and module formats. At some point, the source code was released to the public under the terms of the GNU General Public License, and around 2003 Stian Skjelstad ported the code to Linux. In addition to legacy tracker formats such as mod, xm and s3m, Open Cubic Player now also supports mp3, ogg and ay files and can be compiled with libadplug support.

Monkey's Audio Codec is a lossless audio codec with good correspondence of compression (and decompression) ratio and time. Monkey's Audio Codec can be used for personal, educational and non-commercial purposes. Commercial usage requires prior written permission from Monkey's Audio author. This is community-maintained Unix port of earlier Monkey's Audio sources; it does not correspond to current official SDK releases (4.x).

Musepack is an audio compression format with a strong emphasis on high quality. It's not lossless, but it is designed for transparency, so that you won't be able to hear differences between the original wave file and the much smaller MPC file. It is based on the MPEG-1 Layer-2 / MP2 algorithms, but has rapidly developed and vastly improved and is now at an advanced stage in which it contains heavily optimized and patentless code.

Pd is a real-time graphical programming environment for audio and graphical processing. It resembles the Max/MSP system but is much simpler and more portable; also Pd has two features not (yet) showing up in Max/MSP: first, via Mark Dank's GEM package, Pd can be used for simultaneous computer animation and computer audio. Second, an experimental facility is provided for defining and accessing data structures. Unofficial web site: http://puredata.org/

The G.722 module is a bit exact implementation of the ITU G.722 specification for all three specified bit rates - 64000bps, 56000bps and 48000bps. It passes the ITU tests. To allow fast and flexible interworking with narrow band telephony, the encoder and decoder support an option for the linear audio to be an 8k samples/second stream. In this mode the codec is considerably faster, and still fully compatible with wideband terminals using G.722.

The BioJava Project is an open-source project dedicated to providing Java tools for processing biological data. This will include objects for manipulating sequences, file parsers, CORBA interoperability, access to ACeDB, dynamic programming, and simple statistical routines. The BioJava library is useful for automating those daily and mundane bioinformatics tasks. As the library matures, the BioJava libraries will provide a foundation upon which both free software and commercial packages can be developed.