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Libav
Libav is a complete, cross-platform solution to decode, encode, record, convert and stream audio and video. This package contains the avplay multimedia player, the avserver streaming server, the avconv audio and video encoder, and the avprobe stream analyzer. They support most existing file formats (AVI, MPEG, OGG, Matroska, ASF...) and encoding formats (MPEG, DivX, MPEG4, AC3, DV...). Additionally, it contains the qt-faststart utility which rearranges Quicktime files to facilitate network streaming. This package also serves as a replacement for the former 'ffmpeg' package.
MDLscore
MDLscore is the name of both a text file format to describe musical scores and a software allowing MDLscore files to be converted to MIDI files.
MMA - Musical Midi Accompaniment
MMA is a accompaniment generator -- it creates midi tracks for a soloist to perform with. User supplied files contain pattern selections, chords, and MMA directives.
Mellite
Mellite is an environment for creating experimental computer-based music and sound art. It is a desktop application, allowing you to work with real-time and offline sound synthesis processes, combining multiple perspectives such as live improvisation, implementing sound installations, or working in DAW-like timeline views. Mellite runs on all major operating systems and can be used both in a purely graphical fashion, or by writing and connecting snippets in the Scala programming language.
Mixxx
Mixxx is a digital DJ system, where wave, Ogg, and MP3 files can be mixed on a computer for use in live performances. Filters, a crossfader, and speed controls are provided. It is controlled by keyboard/mouse and/or MIDI events.
MusE
MusE is a MIDI/Audio sequencer with recording and editing capabilities. MusE aims to be a complete multitrack virtual studio.
Ng-jackspa
ng-jackspa is a set of simple user interface programs that host a LADSPA plugin, providing JACK ports for its audio inputs and outputs, and dynamic setting of its control inputs through the user interface. Additionally, the plugin controls can be exported to or controlled by control voltages on standard JACK audio ports. The following interfaces are available: an ncurses visual (full screen) interface for the terminal; a GTK+ graphical interface; a Qt 4 graphical interface; and a command line interface for the terminal.
OpenKJ
Open source cross-platform karaoke hosting software targeted at professional karaoke DJs
Pacpl
Perl Audio Converter (PAC) is a tool for converting multiple audio types from one format to another. It supports MP2, MP3, Ogg Vorbis, FLAC, Shorten, Monkey Audio, FAAC (AAC/M4A/MP4), Musepack (MPC), Wavpack (WV), OptimFrog (OFR/OFS), TTA, LPAC, Kexis (KXS), AIFF, AC3, Lossless Audio (LA), BONK, AU, SND, RAW, VOC, SMP, RealAudio (RA/RAM), WAV, and WMA. It can also convert audio from the following video formats/extensions: RM, RV, ASF, DivX, MPG, MKV, MPEG, AVI, MOV, OGM, QT, VCD, VOB, and WMV. A CD ripping function with CDDB support, batch and playlist conversion, tag preservation for most supported formats, independent tag reading/writing, and extensions for Konqueror and amaroK are also provided.
Psychosynth Heckert gnu.tiny.png
The Psychosynth project aims to create an interactive modular soft-synth inspired by the ideas of the Reactable. We will try to provide a clean object oriented API to allow the creation of new innovative interfaces for the synthetizer and a 3D simulator of a Reactable-alike device with support for collaborative music creation over the internet. Our main goal is to create a free software alternative to allow newbies, developers and professionals explore new ways of making music. It is also important to build a comunity to ease the comunication between we, software devolopers, and electronic music makers, who can provide insightfull ideas on how to turn new experimental features into usefull and creative tools.
Ptformat
ptformat reads and parses ProTools session files. Audio and MIDI source/region/track information is extracted, as well as MIDI note events. The idea is to make programs such as Ardour open PT sessions. It currently supports files with extensions pts, ptf and ptx.
Rexima
'rexima' is a curses-based interactive mixer which can also be used from the command-line. It runs on any terminal with a screen size greater than 80x24. It is intended to be a simple, general, usable mixer without all the chrome usually present in other mixers.
Secret Rabbit Code
Secret Rabbit Code (aka libsamplerate) is a Sample Rate Converter for audio. One example of where such a thing would be useful is converting audio from the CD sample rate of 44.1kHz to the 48kHz sample rate used by DAT players. SRC is capable of arbitrary and time varying conversions; from downsampling by a factor of 256 to upsampling by the same factor. Arbitrary in this case means that the ratio of input and output sample rates can be an irrational number. The conversion ratio can also vary with time for speeding up and slowing down effects.
Surge
Surge, now called Surge XT, is one of the most popular digital synths used by the free software community. In Surge, each patch contains two scenes which are separate instances of the entire synthesis engine (except effects) that can be used to create layered or split patches. It features 3 oscillators per scene, with 12 versatile oscillator algorithms (Classic, Modern, Wavetable, Window, Sine, FM2, FM3, String, Twist, Alias, S&H Noise and Audio Input), 2 filter units in 8 different configurations and 12 LFO units (6 are per voice and 6 global for the whole scene). Surge was renamed to "Surge XT" after it was entirely rewritten in JUCE.
UFMOD
It is used to load and play audio files in XM format.
Vital
Vital is a modular visual synthesizer with animated controls, filter responses, waveforms, smooth LFOs, oscilloscopes, spectrograms, and more. It is GPU optimized and all animations run at 60 FPS. It is a direct competitor to popular proprietary synth Serum. Vital does not accept any pull requests and has some GPL-compatible restrictions. A community fork of Vital is maintained under the name VItalium.
Zrythm
Zrythm is a digital audio workstation designed to be featureful and easy to use. It allows limitless automation, supports LV2 plugins, works with the JACK audio backend, provides chord assistance and can be used in English, French, Portuguese, Japanese and German. It is written in C using the GTK+3 toolkit, can be extended with GNU Guile, and runs on GNU/Linux, FreeBSD, MacOS and Windows.


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