[[Concept:Audio]]

Bchunk: 'bchunk' converts CD images in the raw BIN/CUE format to a set of tracks in ISO 9660 format, which can be then written on a CD-R using cdrecord. Audio tracks are written in CDR (native CD audio) or WAV format.

Bestfit: Bestfit is a small program to determine which files that should be put on a CD (or other media), so that as little space as possible is wasted. It is very easy to use: you specify files on the command line, and bestfit prints the names of those that were selected. Alternatively, bestfit can execute a command for each selected file (eg. to move them to a different directory).

Compose continuous voices using Bézier curves. If you want more control over your portamento, explore tuning and detuning or create flexible glissandi for your synths, this program is for you. Features:

Realtime output using JACK (CV/Gate) or Open Sound Control (frequency & gate)
Sync to other software using Jack Transport
Polyphonic: create multiple tracks
Flexible: Connect it to any synthesizer that supports CV/Gate, including most frameworks like SuperCollider, FAUST, ...

Biblos: 'Biblos' is a powerful indexing tool for managing a cd/mp3 collection as well as local directories. It records full information about each file on the specified media and has a powerful searching tool that can help you find specific files. You can also select a list of files/dirs from the database and Biblos will help you copy them from the source media to the directory choosen.

BigBlueButton

BigBlueButton supports real-time sharing of audio, video, slides (with whiteboard controls), chat, and the screen. Instructors can engage remote students with polling, emojis, multi-user whiteboard, and breakout rooms. Presenters can record and playback content for later sharing with others. We designed BigBlueButton for online learning (though it can be used for many other applications). The educational use cases for BigBlueButton are

Online tutoring (one-to-one)
Flipped classrooms (recording content ahead of your session)
Group collaboration (many-to-many)
Online classes (one-to-many)

BlueSpice: BlueSpice extends MediaWiki and enhances it with useful features, in particular in the areas of quality management, process support, administration, editing and security. There are two editions available: BlueSpice free and BlueSpice pro. BlueSpice free is a free of charge wiki version. BlueSpice pro is the business-critical solution with comprehensive functionalities and a subscription for support and software maintenance.

BoPHP: BoPHP is a Web interface for Boss Ogg. It plays Ogg Vorbis, MP3, and Flac files, and transparently uses SQLite as a database backend. Its artist/album/song scheme is particularly useful for large collections. It has a powerful import system based on filename and/or tags, and uses libao for output. The package currently supports OSS, Alsa, esd, arts, and others. Clients communicate via a powerful XML-RPC interface. Queue size is unlimited, and users can select what happens to the queue when it's empty or finished.

Bonfire

Bonfire is yet another application to burn discs for the gnome desktop. It is designed to be as simple as possible and has some unique features to enable users to create their discs easily and quickly. Features:

burn / copy / erase data and audio discs (big surprise)
allow full editing of data discs (remove/move/rename files inside a directory added to the selection) as well as audio discs
a customisable GUI (when used with GDL)
a search widget based on beagle
file change notification (requires kernel > 2.6.13)
Drag and Drop from nautilus and others apps
support any song format supported by gstreamer
a song and film previewer (thanks to Gstreamer) (to be extended later)
the ability to use files on a network as long as the protocol is handled by gnome-vfs
the display of all playlists and their contents (automatically detected through beagle)
devices detection thanks to HAL

Bongo: Bongo is a flexible and usable buffer-oriented media player for GNU Emacs.

Bookcase: Bookcase is a collection manager for KDE. It includes default collections for books, bibliographies, comic books, videos, music, coins, stamps, trading cards, and wines; it also allows custom collections and unlimited user-defined fields. The collection may be sorted by any property. Names are formatted automatically. Filters limit the visible entries by definable criteria. User can edit the default XSLT file for full customization for printing. Automatic ISBN validation is included. 'bookcase' can import CSV, Bibtex, and Bibtexml and export CSV, HTML, Bibtex, Bibtexml, and PilotDB.

Breeze: 'breeze' aims to be a fast and powerful CD Digital-Audio Player. It may run as either a console app or as a daemon. It can control a cdrom that is playing live, can change track to the next or previous one, jcan jump backward or forward, and set a playlist and your information about cdda.

Burn: ‘burn’ is a command-line tool to create audio discs from MP3, Ogg Vorbis, or WAV files, to backup data files, to create discs from ISO-9660 images, and to copy discs on-the-fly. It performs any of its functions in a single command, without requiring preparatory filesystem creation, etc. The program can compute if there is necessary free space for temporary files (images and audio files), warn if size is bigger than disc capacity, and manage multisession discs.

BurnCDDA: 'burnCDDA' is a console frontend to cdrdao, cdrecord, mpg123, oggdec, mppdec, normalize, and mp3_check. It can be used to create audio CDs from an M3U playlist (the playlist format of XMMS). It supports MP3, OGG Vorbis, Musepack, and WAV files, and it might be the easiest way to copy an audio CD.

Burncenter: This is a candidate for deletion: Unclear licensing, potentially non-free. Source code files do not mention GPL in their headers, just state "Copyright(c) 2000-2005 Alexandre Janon". A copy of the GPLv2 is included with the program. Majority of links on the project's website return 404. Drw (talk) 09:26, 18 July 2018 (EDT) 'burncenter' is a very easy-to-use text-based interface to the standard CD-burning tools for UNIX (cdrecord, cdda2wav, and mkisofs). It features an easy-to-use text interface, multi-session support, audio CD support, and CDRW support with fast and complete blanking.

CD-ROM Control: CD-Rom Control is a GUI for mounting, unmounting, and ejecting the CD-Rom drive. It includes an autostart feature which will automatically bring up either a CD listing in a graphical file manager, an HTML page in a browser, and DVD support.

CDfs: 'CDfs' is a file system that 'exports' all tracks and boot images on a CD as normal files. These files can then be mounted (e.g. for ISO and boot images), copied, played (audio tracks), etc. Its main goal is to 'unlock' information in old ISO sessions. The file system also lets you access data on faulty multi session disks, e.g. disks with multiple single sessions instead of a multi session.

CDimgtools: CDimg tools is a set of command line tools to manipulate CD/DVD images of certain formats.

CYTHAR: CYTHAR is multi-platform, pattern-oriented, polyphonic MIDI step-sequencer, which makes its own path. 16 parallel patterns with six tracks and 16 bars -- equating to 256 bars and 96 tracks. The six pattern tracks imitate the strings of a guitar and will be tuned e.g. to “EAdgbe”. For example, you can set a guitar chord to a pattern tune and then by enabling a few events or triggers the sequencer will start a solo or plays with the chords. You can program drum sets, melodies, arpeggios and complete songs.

Cadencii: Cadencii is a multi-track piano roll editor. A synthesis backend, such as vConnect-STAND or EFB-GW-PL is needed.

Cantus: 'Cantus' is a tool for tagging and renaming MP3 and OGG/Vorbis files. Its features include mass tagging and renaming of MP3s, the ability to generate a tag out of the filename, filter definitions for renaming, recursive actions, CDDB (Freedb) lookup (no CD needed), the ability to copy between ID3V1 and ID3V2 tags, and more.

Castle Game Engine: Castle Game Engine is a cross-platform 3D and 2D game engine for Object Pascal (FPC and Lazarus). - It supports many formats for game assets, including X3D, VRML, Collada, Spine JSON, MD3 and others. - Many graphic effects are possible, including bump mapping, shadows, shaders, mirrors, screen effects. - Animation, collision detection, 3D sound and more features are available. - An extensible system of 3D objects can be used, with out-of-the-box levels, items, intelligent creatures and more. - The engine is portable -- for desktop, mobile, web plugin. The engine is also used to develop view3dscene - a full-featured X3D / VRML browser and a viewer for many other 3D and 2D game formats.

Castopod: Decentralized podcast hosting software to run on your own server.

Ccd2cue: The program ccd2cue is a CCD sheet to CUE sheet converter for the GNU Operating System. It supports the full extent of CUE sheet format expressiveness, including mixed-mode discs and CD-Text meta-data. It plays an important role for those who need to use optical disc data which is only available in the proprietary sheet format CCD, but don’t want to surrender their freedom. It fills an important gap in the free software world because before its conception it was impossible to use complex forms of optical disc data laid out by CCD sheets in a whole/holy free operating system.

Cdcd: cdcd is a CLI CD player designed to incorporate all the features of the X and curses based CD players without having to use a clunky push button interface or having a console hogged with a curses-based CD player. cdcd can accept commands directly from the command line, or in a query mode similar to telnet or ftp. CDDBP and HTTP mode CDDB support is inlcuded, and now CD Index support as well. cdcd also supports CD-ROM changers on GNU/Linux 2.1 or 2.2 systems. You can run cdcd with a command as the argument (eg cdcd play), which is a great way to use cdcd and cron together to make a CD alarm clock. If you run cdcd without arguments you will be given the cdcd command prompt.

Cdda2wav

Cdda2wav is a program recording audio tracks digitally (CDDA) from compact disc drives or burners into wav files, making possible lossless copies of audio tracks. It is currently distributed as part of the 'cdrtools' package. Features include:

the ability to record tracks into separate files
the ability to save audio samples in a variety of formats and calculate MD-5 checksums for the sampled data
real-time scheduling (where available)
ability to undo pre-emphasis on-the-fly
can extract title information from CD Extra and CD-Text discs (with appropriate hardware)
can calculate CDDB disc id for title lookups in the internet

Cdparanoia: Cdparanoia is a Compact Disc Digital Audio (CDDA) extraction tool, commonly known as a 'ripper'. It is built on top of the Paranoia library (included in the cdparanoia source distribution). The cdparanoia package reads audio from the CDROM directly as data, with no analog step between, and writes the data to a file or pipe in WAV, AIFC or raw 16 bit linear PCM. 'cdparanoia' contains few-to-no 'extra' features; it concentrates on the ripping process and knowing as much as possible about the hardware performing it. Cdparanoia will read correct audio data from inexpensive drives prone to misalignment, frame jitter and loss of streaming during atomic reads, and can read and repair data from damaged CDs. It has no compile time configuration, and will autodetect the CDROM, its type, its interface and other aspects of the ripping process at runtime.

Cdrdao: 'cdrdao' creates audio or mixed mode CD-Rs in disk-at-once (DAO) mode driven by a description file. In DAO mode, users can create non standard track pre-gaps with lengths other than 2 seconds and contain nonzero audio data. This lets users divide live recordings into tracks where 2 second gaps would be irritating and create hidden tracks or track intros as found on commercial CDs.

Cdrom: Cdrom is a small/lightweight CD-ROM/DVD-ROM drive controlling utility. It supports several features like automatic mounting/unmounting (if needed), speed control, drive capability, CD status, and more. The author notes that cdrom was programmed under Linux 2.4, and has not been tested with newer kernel versions, including the 2.6 branch.

Cdrtools: !!!WARNING!!!! This download probably has serious licence issues. For saver options look at the details tab. cdrtools (formerly cdrecord) creates home-burned CDs with a CDR/CDRW recorder. It works as a burn engine for several applications. It supports CD recorders from many different vendors; all SCSI-3/mmc- and ATAPI/mmc-compliant drives should also work. Supported features include IDE/ATAPI, parallel port, and SCSI drives, audio CDs, data CDs, and mixed CDs, full multi-session support, CDRWs (rewritable), TAO, DAO, RAW, and human-readable error messages. cdrtools includes remote SCSI support and can access local or remote CD writers.

CherryMusic

CherryMusic is a music streaming server based on CherryPy and jPlayer. It plays the music inside your PC, smartphone, tablet, toaster or whatever device has a HTML5 compliant browser installed. Current features:

Stream your music inside the browser (locally or remote)
Browse and search your music
Completely AJAX based (no page reloads on click, therefore fast)
Create and share playlists
Multiple user authentication
HTTPS support
Automatic album cover art fetching
See CHANGES for all the features

Christine: Christine lets you play your audio and video files in the same application. In a very very easy way. As christine is inteded to be small, and cute we currently had no support for internet radio station, but we will in the future.

Cmus: cmus (C* Music Player) is a small, fast and powerful console audio player for Unix-like operating systems. It supports almost all common file formats, SHOUTcast/Icecast streaming, and multiple output plugins. cmus features multiple media library views, a playqueue, a directory browser, powerful filters, and vi-style search and keybindings. The text-only design reduces the resources needed to run the program, making it a strong choice for older or less-powerful computers as well as systems where a graphical environment is not available.

Conversations.im: Conversations is a Jabber/XMPP client for Android 5.0+ smartphones that has been optimized to provide a unique mobile experience. A port to iOS is envisaged in the medium-term future. Conversations allows you to easily send images, show if your contact has received and read your message, permit dynamic history and handles multiple devices (especially sync with desktop clients), allow you to create group chats and support one-to-one Audio/Video calls ! And thanks to the XMPP Protocol (that is a push protocol) you battery life is safe. Conversations also does not require a Google Account or specifically Google Cloud Messaging (GCM). Using the XMPP federated protocol, you can freely choose a trustworthy server (your own if you want) for yourself while still chatting with contacts that are using other servers. The communication between Conversations and the XMPP server as well as the communication between the individual servers is TLS encrypted. This way, not only your messages are safe but more importantly it is impossible for an outside attacker to intercept your meta data (with whom you are chatting) without attacking your server first. On top of that, Conversations gives you the choice to enable one of two end-to-end encryption mechanisms. The first one is OMEMO, a state of the art multi-end-to-multi-end encryption method which is very easy to setup and gives you forward secrecy and plausible deniability. For backwards compatibility reasons Conversations also supports OpenPGP.

Cool Mic: From homepage: Cool Mic is a broadcasting tool. It broadcasts/livestreams audio from your Android device to any Icecast server using the audio formats Ogg/Opus and Ogg/Vorbis. It has many features and an easy to use interface.

Coqui STT: From the GitHub page: The deep learning toolkit for Speech-to-Text. Training and deploying STT models has never been so easy. Fast, multi-platform, deep-learning toolkit for training and deploying speech-to-text models. Coqui STT is battle tested in both production and research.

Crip: 'crip' is a terminal-based ripper/encoder/tagger tool for creating Ogg Vorbis/FLAC/MP3 files under UNIX or GNU/Linux. It is well-suited for someone seeking to make a lot of files from CDs and have them all properly labeled and professional-quality with a minimum of hassle and yet still have flexibility and full control over everything. Current versions of crip support only Ogg Vorbis and FLAC; if you want to make MP3 files you must use crip-1.0.

CubicSDR: CubicSDR "allows you to navigate the radio spectrum and demodulate any signals you might discover" utilizing a modular 'piping' architecture that simplifies real-time analysis of discovered signals. CubicSDR creates live "waterfall" visual graphs representing a spectrum bandwidth and associated signal intensity.

Cursynth: Cursynth is a polyphonic music synthesizer that runs graphically inside your terminal. You can play Cursynth as a standalone soft-synth with your computer keyboard or MIDI keyboard.

Cuteframework: Cute Framework (CF) is the cutest framework available for making 2D games in C++. It provides a portable foundational layer for building 2D games in C/C++ without baggage, gnarly dependencies, or cryptic APIs. CF runs almost anywhere, including Windows, MacOS, iOS, Android, Linux, and more!

Cutmp3: 'cutmp3' is a small command line MP3 editor. It lets you select sections of an MP3 interactively or via a timetable and save them to separate files without quality loss. Silence and ID3 tag searching are also possible. For playback it uses mpg123. The program works with VBR files and files bigger than 2GB.

Cymbaline: 'Cymbaline' is an intelligent learning (weighted playlists) music player. It sets a score for each track based on your listening habits, and you can set thresholds to create playlists with your favorite tracks automagically. It is particularly useful if you have a large playlist which you don't want to micromanage, if you want to listen to music in the background) perhaps with random selections that you like), or if you have a collection of albums, not singles. In random mode, it will play your favorite tracks more often. 'Cymbaline' also allows album-based navigation: you can start playing the next album, skip 2 albums ahead, go to a specific album, etc. There is also a random queue mode where you see a list of randomly chosen tracks that play consecutively.

DSSI: DSSI is an API for audio plugins, with particular application for software synthesis plugins with native user interfaces. DSSI is an open specification developed for use in GNU/Linux audio applications, although it is portable to other platforms. It may be thought of as LADSPA-for-instruments, or something comparable to VSTi. This package contains the header file required for compiling hosts and plugins.

DeaDBeeF: DeaDBeeF (as in 0xDEADBEEF) is a graphical, yet lightweight audio player.

DeepSpeech: From GitHub README: DeepSpeech is an Speech-To-Text engine, using a model trained by machine learning techniques based on Baidu's Deep Speech research paper. Project DeepSpeech uses Google's TensorFlow to make the implementation easier.

Delvj: DelVj is a tool that provides real-time 3D composition and algorithmic video composition in which the computer composes 3D forms as indicated by the user as a virtual extension of the users mind. It can be given indications for the objects, videos, and effects, and the computer can do the rest. It features a GTK+ interface that runs puredata in the background, controls xmms, and allows tweaking of all patch parameters, recording of videos, and streaming to an Icecast server.

Device-Cdio: Device::Cdio is a interface to the GNU CD Input and Control library (libcdio) and it's ISO 9660 library (libiso9660) which are written in C. The library encapsulates CD-ROM reading and control and ISO 9660 handling. Perl programs wishing to be oblivious of the OS- and device-dependent properties of a CD-ROM can use this library.

Digger: Digger automatically plays songs from your music collection matching your selection criteria. You can adjust what you think of the currently playing song to enable appropriate retrieval in a wide range of listening contexts. Digger helps you get back into your music collection.

Digital DJ: DigitalDJ is an SQL-based mp3-player frontend designed to work with Grip. When Grip encodes mp3 files, it places all song information into an SQL database. DigitalDJ then uses this information to create playlists based on various criteria. * Manage a database of CDs in MP3 format * Interacts with Grip to add song information as you rip * Create playlists based on song properties such as Artist/Disc/Genre/Tempo * Play songs via an external MP3-player * Condensed mode with small screen footprint and scrolling display * Nifty BPM-O-Matic beats-per-minute calculator * Keeps track of number of plays and last play for song/disc/artist

Dirogg: dirogg is a script to migrate your entire music collection to the Ogg Vorbis format. It's a recursive script, meaning that you run it from the top level of your music directories, and it will automatically recurse and convert all MP3 files to Ogg.

Disc-Cover: 'disc-cover' scans audio cds and uses information from the cddb database to build a back and front cover for the cd by connecting with a cddb server to get the title, artist, and list of track titles (and extended information where available). Documentation is in Dutch, German, Spanish, and English. It supports caching of cddb entries in directory that can be shared with other cddb-aware programs. You can produce covers without typing in all the information. The cover can be output in Latex, Dvi, Pdf, Postscript, Cddb entry, HTML, text, and a format to use with cdlabelgen. You can optionally put a picture on the front cover; the program supports almost any image format. You can also assign different colors to different items such as titles or track numbers.

Dtas: Command-line tools for audio playback, processing, and whatever else related to audio. dtas follows the worse-is-better philosophy and acts as duct tape to combine existing command-line tools for flexibility and ease-of-development. dtas is currently implemented in Ruby (and some embedded shell), but may use other languages in the future. Currently, primarily wraps sox commands but may also use ecasound (or any command-line driven audio processing tools).

E-xmms: E-xmms is a Enlightenment applet that interfaces with XMMS. It will compare the previous and current states to determine if window painting should be done.

ESpeak: eSpeak is a compact text to speech engine for good quality English and other languages. Its clear articulation and good intonation makes it suitable for listening to long text articles. It can speak text files from the command line, and also operates as a "talker" within the KDE TTS system and with a Gnome Speech driver, as an alternative to Festival or other similar programs. Windows SAPI5 and command line versions are also available.

EasyTAG

EasyTAG is an utility for viewing, editing, and writing tags for your MP3, MP2, Ogg Vorbis, and FLAC files using a nice simple GTK+ user interface. Features include (among others):

view, edit, write MP3, MP2, FLAC and Ogg Vorbis tags
can edit more tag fields : Title, Artist, Album, Disc Album, Year, Track Number, Genre, Comment, Composer, Original Artist/Performer, Copyright, URL and Encoder name
auto tagging: parse filename and directory to automatically complete the fields (using masks)
ability to rename files and directories from the tag (using masks) or by loading a text file
process selected files of the selected directory
ability to browse subdirectories
recursion for tagging, removing, renaming, saving, etc.
can set a field (artist, title, …) to all other selected files
read file header information (bitrate, time, …) and display them
auto completion of the date if a partial is entered
undo and redo last changes
can process fields of tag and file name (convert letters into uppercase, lowercase, ...)
ability to open a directory or a file with an external program
a tree based browser or a view by Artist & Album
a list to select files
a playlist generator window
a file searching window
simple and explicit interface
optional Nautilus extension
Brazilian Portuguese, Bulgarian, Chinese, Czech, Danish, Dutch, French, German, Greek, Hungarian, Italian, Japanese, Polish, Romanian, Russian, Spanish, Swedish and Ukrainian translation languages

Ecasound: Ecasound is a software package designed for multitrack audio processing. It can be used for simple tasks like audio playback, recording and format conversions, as well as for multitrack effect processing, mixing, recording and signal recycling. Ecasound supports a wide range of audio inputs, outputs and effect algorithms. Effects and audio objects can be combined in various ways, and their parameters can be controlled by operator objects like oscillators and MIDI-CCs. A versatile console mode user-interface is included in the package.

Eject: 'Eject' is a program for ejecting removable media under software control. It can also control the auto-eject feature of some drives and some multi-disc CD_ROM changers, can be used to switch CDs on an IDE/ATAPI CD changer, and can close the disc tray of some CD_ROM drives. See the README file that comes with the distribution for devices and configurations that the program is known to work with.

Element Desktop: Element Desktop is a chat platform using Matrix.

Emms: EMMS is the Emacs Multimedia System. It is a small front-end which can control one of the supported external players. Thus, it supports whatever formats are supported by your music player. It also supports tagging and playlist management, all behind a clean and light user interface. The latest version is available via GNU ELPA. To install this package, run in Emacs: M-x package-install RET emms RET

Euterpe: Euterpe is a media archive searching applet. It takes a search string from either the current selection or a query dialog and searches for matching file names, playing any it finds. Multiple archive directories are supported. All actions are configurable.

Exaile: Exaile is a media player aiming to be similar to KDE's AmaroK, but for GTK+. It incorporates many of the features from AmaroK (and other media players) like automatic fetching of album art, handling of large libraries, lyrics fetching, artist/album information via the wikipedia, last.fm support, and optional iPod support (assuming you have python-gpod installed). In addition, it includes a built in shoutcast directory browser, tabbed playlists (so you can have more than one playlist open at a time), blacklisting of tracks (so they don't get scanned into your library), downloading of guitar tablature from fretplay.com, and submitting played tracks on your iPod to last.fm.

Ezstream: Ezstream is a command line source client for the Icecast media streaming server. It can stream Ogg Vorbis and MP3 audio, as well as Ogg Theora video, either "as-is"; without reencoding (which uses very little CPU time) or it can use external decoders and encoders to convert virtually any media format into one of the supported streaming formats. Ezstream supports metadata, streaming from standard input, playlists, and external playlist scripts or programs, and more.

FIcy: 'fIcy' is a command line icecast/shoutcast stream grabber. Its goal is to cleanly and automatically rip a stream into user-customizable files. It will work with any ICY-compatible stream, so you can save the stream to disk, pipe the output to a media player, or do both.

FLAC

The FLAC project consists of:

the stream format
reference encoders and decoders in library form
flac, a command-line program to encode and decode FLAC files
metaflac, a command-line metadata editor for FLAC files
input plugins for various music players

FLAC has recently joined the Xiph project, which produces other free codecs such as speex and Ogg Vorbis.

FUPlayer 2: FUPlayer is a full featured music manager and player for the GNOME desktop. With it, you can play music from your hard drive, create playlists, do real file management using its Trash, and play, rip, and burn audio CDs. It features an interface similar to those of many modern manager-style players, but with many improvements, such as true non-modal search and browse functionality, find-as-you-type, and drag destination highlighting. It aims to be extremely user friendly and efficient to use.

Fairseq: From GitHub README: Fairseq(-py) is a sequence modeling toolkit that allows researchers and developers to train custom models for translation, summarization, language modeling and other text generation tasks. We provide reference implementations of various sequence modeling papers.

Ffem: Media is an Emacs front-end for command line media players. This major mode currently supports only mplayer.

Ffmpeg

FFmpeg is a complete solution to record, convert and stream audio and video. Its components include:

ffmpeg – Converts one video file format to another and supports grabbing and encoding in real time from a TV card.
ffserver – HTTP (RTSP is being developed) multimedia streaming server for live broadcasts that supports time shifting.
ffplay – simple media player based on SDL and the ffmpeg libraries
ffprobe – a media file prober
libavcodec – library containing all FFmpeg audio/video encoders and decoders (most developed from scratch for best performances and high reusability)
libavfilter – video and audio filtering library
libavformat – library of parsers and generators for all common audio/video formats
libavutil – utility library containing functions used by all FFmpeg components
libswscale – video scaler and pixel format converter
libswresample – audio resampler and sample format converter
libpostproc – video post-processing library

Ffmpeg-broadcaster: this project contains two analogous shell scripts for broadcasting live any of desktop screen capture, webcam, audio, static images, text overlay through RTMP/flash/wowza servers such as livecoding.tv and concertwindow.com ffmpeg implementation - full-featured and works quite well gstreamer implementetion - work in progress

Find Duplicate Music Files (fdmf): Find Duplicate Music Files detects music files that contain the same music, even if the files are differently named, and are in different formats such as MP3, OGG, WAV, WMA, M4A, and RealAudio and contain different or non-existent meta-information such as ID3 tags. The program operates on whole directories of music file at a time, or upon multiple directories. It analyzes them and outputs the filenames of pairs that seem similar, based on their audio fingerprint, or perceptual hash.

Flac-jacket: 'flac-jacket' uses raw audio files (raw files are created from data streams) as the source. Based on the filename format, it first creates lossless audio files, using FLAC, and optionally removes the source files if conversion was successful. It then creates a new html page with links to all new and existing .flac files. The html page is regenerated each run, so the listing is somewhat dynamic: you needn't edit the html page just because you removed or renamed a FLAC audio file or altered an artist directory.

Flac2ogg: This is a candidate for deletion: Links broken. No links to page. Email to maintainer broken. Poppy-one (talk) 13:27, 30 July 2018 (EDT) 'flac2ogg' converts FLAC or shorten files to Ogg Vorbis. It retains the FLAC tags as well.

Free V-AMP: Free V-AMP is a free software project which acts as a MIDI controller for the Behringer V-AMP 2 guitar amplifier. It is intended to be a free replacement for the proprietary zero-cost software Behringer distributes. It can control and monitor the amplifier settings; load, save and print those settings; and perform other common MIDI operations.

Fugio: Fugio (pronounced foo-gee-oh) is an open visual programming system for building digital art and creative projects quickly, with no programming experience required.

Furnace: The biggest multi-system chiptune tracker ever made! Emulates the audio chips of several classic pieces of hardware and brings them into an easy to use tracker interface!

GFLame

GFlame is easy to use GTK2 Front-end for lame encoder written in C++, for just a couple of hours. It is developed using Glade2 GUI designer, and gtkmm2 wrapping engine for GTK+.
GFlame v0.1 is tested with lame v3.95 MMX. This version is fully functional, but requires more lame options to be supported, such as raw pcm input, recompression, streaming, resampling etc.
FEATURES:

Multiple files for encoding.
Manual or preset encoding control for each file.
ID3 Tag editor.

GNU Waveform Viewer: Gwave is a waveform viewer. Its purpose is for viewing analog data, such as the output from Spice-like simulations. Gwave can read binary or ascii files written by HSpice from transient, AC, or Sweep analyses, "raw" files written by Spice2, Spice3, or ngspice, and transient analysis files from the CAzM simulator. It can also read a generic tabular ASCII format suitable for use with ACS or homegrown tools. It supports multiple "panels" (graticlules) with multiple variables displayed in each. Two vertical-bar cursors are available for time-difference measurements. Multiple files can be loaded, for comparing the results of several simulations.

GPodder: gPodder is a Podcast receiver/catcher written in Python and pyGTK. It manages podcast feeds for you, and automatically downloads all podcasts from as many feeds as you like. If you are interested in Podcast feeds, simply put the feed URLs into gPodder and it will download all episodes for you automatically. If there is a new episode, it will get it for you. It supports download resume, if the server supports it.

Garlic-player: The garlic player is a SMIL compatible media player software for digital signage. It displays different digital signage content, such as images, videos, and interactive applications, on a screen. The garlic-player can be used and administrated locally or remote via Internet.

GetID3: 'getID3()' is a PHP script that extracts useful information from MP3s and other multimedia file formats. It can extract information like the play time, bitrate, and resolution from almost 40 different file formats. It can also parse information from ID3v1, ID3v2, Ogg Vorbis, Lyrics3 v1 & v2, RIFF (AVI, WAV, CDA, CART, BWF), APE, ReplayGain, PNG, and GIF tags, and can write ID3v1, ID3v2, APE2, FLAC, and Ogg Vorbis tags.

Gimmix

Gimmix is a light-weight frontend to music player daemon written in C using GTK+2. Gimmix has the following features:

Simple and clean interface.
Compact and full view modes.
Library Browser.
Library Search (Search by Artist, Album, Filename etc)
Playlist management (manage mpd playlists)
ID3v2 Tag editing support.
Support for controlling gimmix through keyboard
System tray icon support.
Notification support (Displays the currently playing song in systray).
Small memory footprint.

Gina: Gina is a modified version of the Zina MP3 streamer/jukebox. It takes a collection of MP3s stored in a genre/artist/album/song format and creates a full-featured Web interface. It has been tested on Apache 2.0.47, PHP 4.3.1, and MySQL 4.0.13. Its features include streaming or downloading of MP3/Ogg files, album cover support and artist picture support, the ability to download albums as a ZIP file, random playing of songs from specified genres, "featured" (random) albums on the main page, and playlist support.

Gmusicbrowser: gmusicbrowser is a jukebox for large collections of MP3 and Ogg files. It is fast, even with tens of thousands of songs, has easy access to related songs (same artist/album/title), supports multiple genres per song, ratings, and customisable flags. It has a powerful browser window with filter history, dynamic filters with unlimited nesting of conditions, mass-tagging, and more.

Gnac (GNome Audio Converter): Gnac is an easy to use audio conversion program for the Gnome desktop. It is designed to be powerful but simple! It provides easy audio files conversion between all GStreamer supported audio formats.

Gnome Simple Stateful Music Player: Gnome Simple Stateful Music Player is a small, simple music player that keeps out of your way whenever possible. It remembers what you were playing when you exited, and continues in the same place the next time you start. It doesn't build a database of your audio tracks: instead it works with your files and directories directly.

Gnome Toaster: Gnometoaster is a full CD creation suite for X11 and GNOME. It can copy and create data, audio, and mixed mode CDs on the fly or with precaching in both TAO and DAO mode. The built-in file manager easily creates data tracks. GNOME drag-and-drop is supported throughout the program. Gnometoaster can also write MP3 files on the fly, is fully multisession capable, and can encode all sorts of filetypes directly from audio tracks on a CD.

GnomeBaker

GnomeBaker is a CD/DVD burning application for the Gnome desktop. It can:

Create audio cds from existing wavs, mp3, flac and oggs
Import M3u and pls audio playlists.
Create data cds
Blank rewritable disks
Copy data cds
Copy audio cds
Burn existing cd iso images
Can burn via scsi and atapi on linux kernels 2.4 and 2.6. Basically if cdrecord works then GnomeBaker will work.
Drag and drop to create data cds (including DnD to and from nautilus)
Integrate with gconf for storage of application settings
Burn DVDs.
Supports multisession burning
Blank/Format DVDs
Burn Cue/Bin files
Burn data cds on the fly

Gnomoradio: The Gnomoradio project is creating an online network where artists can promote and share their music freely and willingly. By eliminating many of the exclusionary tactics of the mainstream music industry, musicians now have a chance to interact directly with their listeners and receive valuable exposure.

Gnormalize: gnormalize is a front end to the normalize tool, ripper, an encoder, and an audio converter. It decodes MP3, MP4 (or M4A or AAC), MPC (or MPP or MP+), OGG, APE, or FLAC files to wave, then normalizes the wave and re-encodes it. It can also rip audio CDs, encode audio data, convert audio formats between MP3, MP4, MPC, OGG, APE, and FLAC, and change the encoding properties and edit Meta Info (like title, artist, album, etc.) of the final normalized files.

Gnufm: GNU FM is a piece of software you can install on your own web server, to run a music community site, similar to Libre.fm or Last.fm. You can use it for your family, your business, your band, or just for yourself.

Gnump3d: GNUMP3d is a small, portable, and robust server for streaming MP3s, OGGs, and other audio files. It presents a simple and attractive interface to Web browsers, which allows you to navigate through your music collection. Individual files may be streamed, as can whole directory trees. Other features include the ability to see your most popular tracks, and to search your collection for songs.

Gnuradio: GNU Radio is a development toolkit that provides signal processing blocks to implement software radios. It can be used with external RF hardware to create software-defined radios, or without hardware in a simulation-like environment. It is widely used in research, industry, academia, government, and hobbyist environments to support both wireless communications research and real-world radio systems.

Gnusound: GNUsound is a multitrack sound editor for GNOME 1 and 2. It can read and write many audio file formats such as WAV, MP3 and FLAC. It can work with the OSS, ALSA or JACK audio backends. It provides many different built-in audio processing modules, such as fades in/out, delay, and filters. GLADSPA plugins may also be used for further processing.

Gnuspeech

Gnuspeech is a speech synthesis software. The first official release is distributed in two separate packages:

gnuspeechsa, a cross-platform speech synthesis application providing speech output into applications.
gnuspeech, the "core system", consists of a suite of applications, frameworks and services.

Gnustep: Provides an object oriented application development framework and tool set for use on a wide variety of platforms. It provides a generalized visual interface design and a cohesive user interface. It also uses a common imaging model called Display PostScript (based on PostScript) to do all its drawing, so the program is truly WYSIWYG. GNUstep is written in the Objective-C language, a simple yet powerful object-oriented language based on C that gives you the full power of an object-oriented language with exactly one syntax addition to C and a dozen or so additional keywords.

Goggles Music Manager: Goggles Music Manager is a music collection manager and player that automatically categorizes MP3, Ogg Vorbis, FLAC, and Musepack files based on genre, artist, album, and song. There is no need to create playlists of any kind. Just select one or more artists and albums to start playing your music.

Grip: Grip is a CD player and CD ripper/MP3-encoder for the GNOME desktop. It has the ripping capabilities of cdparanoia built in, but can also use external rippers (such as cdda2wav). It also provides an automated frontend for MP3 encoders (presets for lame, bladeenc, l3enc, xingmp3enc, mp3encode, and gogo), letting you take a disc and transform it easily straight into MP3s. The Ogg Vorbis format is also supported. Internet disc lookups are supported for retrieving track information from disc database servers. Grip works with DigitalDJ to provide a unified, "computerized" version of your music collection.

Gronk: Gronk is a Web-based MP3 jukebox. It generates heavily-hyperlinked Web pages listing all of your ripped CDs, by extracting information from CDDB data. These Web pages allow easy selection of songs or albums to play, and when nothing has been explicitly selected, it selects songs randomly. Playback is done via either XMMS or mpg123. It is built around static HTML pages, not a database.

Gsequencer: Advanced GTK+ Sequencer (AGS) is intended to use for music composition. It features a piano roll, as well a synth, matrix editor, drum machine, soundfont2 player, mixer and an output panel. Further it has LADSPA, DSSI and Lv2 plugin support. It's designed to be highly configurable. You may add effects to its effect chain; and add or remove audio channels/pads. You may set up a fully functional network of engines, thus there is a link editor for linking audio lines. AGS requires a realtime kernel and ALSA support. AGS uses conditional locks to keep several threads in sync that's why you need at least a preemptable kernel. LADSPA support has been added to version 0.4.2 as well export to WAV. Version 0.5.x brings you first concurrent audio tree processing support. Version 0.6.x is dedicated to accessibility. You might control GSequencer by keyboard. As you move to a note it provides you an audible feedback. Version 0.7.x gives you the benefit of providing the libraries libags, libags-thread, libags-server, libags-audio and libgsequencer. It contains for now an automation editor. Open Sound System (OSS4) and JACK Audio Connection Kit support has been added recently. Now you may configure multiple soundcards. Since 0.7.111 there is MIDI input available. Let you record your MIDI instrument and doing live performance. Version 0.8.x extended MIDI support to import/export SMF. A built-in envelope editor and additional editing functionality like move/crop selected notes. Version 0.9.x added automation editor. Version 1.0.x released implemented sticky controls. Version 1.1.x segmented AgsNotation and AgsAutomation. Version 1.2.x improved audio backend support and improved accessibility by using Atk+ interfaces. Migrated to segmented AgsNotation , Version 1.3.x migrated to segmented AgsAutomation. Version 1.4.x AgsWave and AgsBuffer have arrived in libags_audio.so Version 2.0.x provides new machines AgsEqualizer10, AgsSpectrometer and AgsAudiorec. Wave form manipulation and recording capabilities. Version 2.1.x has got initial OSC content model support. The provided OSC server allows you to do remote control. Version 2.2.x support for GCC builtin vector functions and added complex data type support. Version 2.3.x added new machines AgsFMSynth, AgsFMSyncsynth and AgsPitchSampler. Support for WASAPI. Version 3.0.x added GObject-Introspection annotations. Implemented AgsServer providing basic HTTP authentication using XMLRPC library libsoup-2.4. Added online help browser to view the user manual within UI by using WebKit2Gtk-4.0. Further providing support for AGS-OSC-OVER-XMLRPC and migrated to Gtk-3. Allow the user to perform fast export to audio file with AgsAudiorec. Version 3.3.x provides a new effect processors, the ags-fx engine. All recalls have got a replacement in order to operate with one single iteration per tic. Further the staging program is modifiable. Version 3.4.x implemented AgsSFZSynthGenerator and AgsSF2SynthGenerator allowing you to pitch missing samples. Version 3.6.x implemented AgsGstreamerFile capable of reading common media files using gstreamer. Version 3.12.x implemented composite editor. Version 4.0.x migrated to Gtk4 and libsoup-3.0. Version 4.1.x implemented zoom in PDF manual. Version 5.0.x improved vst3 api reference manual. Version 5.2.x implemented tremolo, vibrato and wah-wah of SFZ and Soundfont2 synths. Version 5.4.x fixed automation editor. Version 6.0.x implemented initial MIDI v2.0 support. Version 6.1.x implemented note 256th support. Version 6.2.x fixed more accurate timing. Version 6.4.x implemented auto-scroll. Version 6.5.x fixed tool dialogs. Version 6.6.x refactored file dialog.

Gtktalog: GTKtalog browses a CD-ROM database. Each disk, folder and file has a size, date, category, description, and content parameter and can be completely edited or deleted. The file search module can search on filename, foldername with name, category description, date, filesize, and content parameter. Each filetype has its own icon. It is possible to use programs like tar, arj, zip, or scripts to extract information from files to include in the database. Gtktalog can mount, scan, umount, and eject a CD-ROM in the background.

HASAS: HASAS (HydroAcoustic Signal Analysis System) is a modular system for passive sonar signal analysis. It can be used for biological research or surveillance, for example. The soundcard is used as input device, and it currently includes all the very basic functionality; beamforming, direction finding, level histogram, LOFAR/DEMON (narrowband spectrogram), wideband spectrogram, and raw audio.

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