Regulus is a Prolog-based toolkit for building spoken dialogue systems.
A multimedia framework based on Qt and FFmpeg
QtAV is a cross-platform and high performance multimedia playback framework based on Qt and FFmpeg. Features: timeline preview, gpu decoding etc
A multi-format module player and library
xmp is a module player for Unix-like systems that plays over 90 mainstream and obscure module formats from Amiga, Atari, Acorn, Apple IIgs and PC, including Protracker (MOD), Scream Tracker 3 (S3M), Fast Tracker II (XM) and Impulse Tracker (IT) files.
GEntrans is a collection of plug-ins and tools for the GStreamer multimedia framework. It provides a set of GStreamer elements useful in transcoding pipelines and an application to aid in running such pipelines. It also provides a plain and simple though capable and configurable GStreamer based multimedia player.
FAAC is an Advanced Audio Coder (MPEG2-AAC, MPEG4-AAC). The goal of FAAC is to explore the possibilities of AAC and exceed the quality of the currently best MP3 encoders. You can submit pull requests via GitHub: https://github.com/knik0/faac https://github.com/knik0/faad2
Mikmod is a module player and library supporting many formats, including mod, s3m, it, and xm. Originally a player for MS-DOS, MikMod has been ported to other platforms, such as Unix, Macintosh, BeOS, and Java(!!)
This is the fast and Free (LGPL license) real time MPEG Audio Layer 1, 2 and 3 decoding library and console player. It uses floating point or integer math, along with several special optimizations (3DNow, SSE, ARM, ...) to make it most efficient.
SoundTouch is an open-source audio processing library for changing the Tempo, Pitch and Playback Rates of audio streams and/or audio files
A lightweight library to handle the sending and receiving of messages according to the Open Sound Control (OSC) protocol.
libTiMidity is a MIDI to WAVE converter library that uses Gravis Ultrasound-compatible patch files to generate digital audio data from General MIDI files. This library based on the TiMidity decoder from SDL_sound library.
General C++ Library, with modules for Computer Vision, Pattern Recognition and much more.
jVSTwRapper allows you to develop VST (2.4), Audio Unit (AU) and LADSPA compatible audio plugins and virtual instruments plus user interfaces (Swing) with the Java programming language on Windows, Linux and Mac OSX. 5 demo plugins (+src) are included.
A real-time SoundFont software synthesizer
A real-time software synthesizer based on the SoundFont 2 specifications. It can be used for live audio synthesis of MIDI events or for rendering MIDI files to disk, using SoundFont instruments. It can also be embedded in other applications. This is not a application with a graphical user interface, however there are several GUI applications which utilize FluidSynth.
TCSystem provides platform independent c++ framework for streams, templates, threading and networking. It also includes a FOX based MSN Messenger and a file syncronisation program. With version 1.4 an OpenAL based Audio module was started.
Matroska is an open standard audio/video container format. Visit our homepage at http://www.matroska.org
Libcddb is a library that implements the different protocols (CDDBP, HTTP) to access data on a CDDB server (http://freedb.org). It tries to be as cross-platform as possible. The initial libary will have a C API.
MPEG-Audio Layer 2 (MP2) encoder
TwoLAME is a fork of tooLAME - an optimized MPEG Audio Layer 2 (MP2) encoder. New features include a brand new frontend, fully thread-safe library (libtwolame), with an API very similar to LAME's.
The Video Annotation and Reference System (VARS) is a software interface and database system that provides tools for describing, cataloging, retrieving, and viewing the visual, descriptive, and quantitative data associated with video.
FLAC is a free lossless compressed audio format which supports streaming and archival. The FLAC project maintains the format and provides a reference encoder/decoder and input plugins for several popular audio players.
A multimedia authoring and processing framework and a video playout server for television broadcasting.
jack audio client module for python
The project is about porting selected (open source) music-, and audio software to latest compilers and platforms...
OpenSource Development at the IEM (Institute of Electronic Music and Acoustics, University of Music and Dramatic Arts, Graz, Austria)
Korale aims to be an open source alternative to the popular "Sibelius" sheet music notation software. It will be written portably and flexibly, and will use as intuitive an interface as we can design.
AY-8912 chip emulation library
AY/YM sound chip (from ZX-Spectrum) emulation library.