[[Concept:Audio]]

Helm

Helm is a cross-platform, lightweight, polyphonic, and modular synthesizer that runs on GNU/Linux, Mac, and Windows as a standalone program and as a LV2/VST/AU/AAX plugin. It was developed by Matthew Tytel, who also later worked on Vital.

Features

32 voice polyphony
Interactive visual interface
Powerful modulation system with live visual feedback
Dual oscillators with cross modulation and up to 15 unison oscillators each
Sub oscillator with shuffle waveshaping
Oscillator feedback and saturation for waveshaping
12 different waveforms
Blending between 12 or 24dB low/band/high pass filter
Low/Band/High Shelf filters
2 monophonic and 1 polyphonic LFO
Step sequencer
Lots of modulation sources including polyphonic aftertouch
Simple arpeggiator
Effects: Formant filter, stutter, delay, distortion, reverb

Herrie: Herrie is a command line music player. It has a split-screen file manager and playlist interface and supports a number of file formats (MP3, Ogg Vorbis, wave, FLAC, etc). It also has some nice features, including a chroot() function for untrusted setups (remote logins, parties, etc). AudioScrobbler is also implemented using Curl.

Hound Dog: Hound Dog is a KDE instrument tuner. It displays the pitch and amplitude of audio signals. This project is still alpha, but seems to work as a basic tuner on most machines.

ID3.py: ID3.py is an object-oriented Python module for manipulating the so-called ID3 informational tags on MP3 files, which include such data as artist, track title, genre, et cetera. ID3.py is extremely easy to use, and is intended for folks who are developing MP3 encoder wrapper programs or browsers in Python.

IMMS: IMMS (Intelligent Multimedia Management System) is an intelligent playlist plug-in for XMMS that tracks your listening patterns and dynamically adapts to your taste. It is incredibly unobtrusive and easy to use as it requires no direct user interaction.

ISO Master: ISO Master is a graphical editor for ISO images with support for ISO9660, RockRidge, and Joliet file names. It is useful for extracting, deleting, or adding files and directories to or from an ISO image. It is based on the bkisofs and GTK2 libraries.

Icecast: Icecast is a streaming media server which currently supports WebM and Ogg streaming including the Opus, Vorbis and Theora codecs. Also Icecast can handle other streams like MP3/AAC/NSV in legacy mode, but this is not officially supported. It can be used to create an Internet radio station or a privately running jukebox and many things in between. It is very versatile in that new formats can be added relatively easily and supports open standards for communication and interaction. Icecast was first released in 1999 as an alternative to proprietary and patent-encumbered streaming audio technologies of the day, which included both RealAudio and Shoutcast. Later, Icecast 2 brought improved metadata support, compatibility with Shoutcast clients, and more advanced configuration options, which were features that lead to widespread adoption in the internet radio community.

Icegenerator: IceGenerator is a direct stream generator for Icecast/Shoutcast servers. It streams MP3s to an Icecast server without resampling, which saves CPU. Its main features are support for many playlist format (directories, MySQL tables, etc.), metadata information, and a telnet interface for commands. It runs as a daemon; its main use is for radio automation (i.e., you can run it through cron).

Id3edit: Id3edit allows you to edit MP3 ID3v1.1 tags. It allows you to edit multiple files at once, and provides sanity checking of MP3 files if desired.

Id3tool: 'id3tool; is a command line editor for ID3v1 format tags, commonly used on MP3 files.

Ikkes Volume Manager: Ivman is a generic handler for HAL events. Originally for automounting, it can now be used to run arbitrary commands when events or conditions occur or properties are modified on your hardware (e.g., run a command when you close your laptop's lid, run a command when a particular device is attached or a particular CD is inserted, etc).

Irsleeptimer: This program implements the Sleep Timer function for Lirc. While watching TV at night, you can use the remote control to program a countdown to shutdown the computer.

JACK Audio Connection Kit: JACK is a low-latency audio server. It can connect a number of different applications to an audio device, as well as allowing them to share audio between themselves. Its clients can run in their own processes (i.e., as normal applications), or can they can run within the JACK server (as a "plugin"). JACK is different from other audio server efforts in that it has been designed from the ground up to be suitable for professional audio work. This means that it focuses on two key areas: synchronous execution of all clients, and low latency operation.

JMax: This is a candidate for deletion: Links broken. No archive.org entry. No maintainer. Poppy-one (talk) 12:29, 6 August 2018 (EDT) jMax is a graphical programming environment for developing interactive real-time audio applications developed at IRCAM.

JOggPlayer: jOggplayer is a platform-independant, graphical Ogg Vorbis player developed using Java. It features the usual basics needed to enjoy your files, including playing files from your hard drive or streaming from an URL, individual file play or multiple file looping play, sequential or random play, volume control that goes to 11, a visual song progress indicator, etc. The latest version includes the ability to drag and drop songs, a favorites list, and auto updating.

JOrbis

JOrbis accepts Ogg Vorbis bitstreams and decodes them to raw PCM.

JOrbis is in pure JavaTM.
JOrbis will run on JDK1.0.* or higher.
JOrbis is under LGPL.
JOrbisPlayer can play Ogg Vorbis live streams on UDP broadcast packets from JRoar.
JOrbis includes very simple pure Java Ogg Vorbis comment editor, JOrbisComment.

Jack: Jack is a console based cd-ripper. It supports cdparanoia and cdda2wav (amongst others) for extraction and various MP3 and OGG/Vorbis encoders; you can even rip from a cdrdao-generated CD image. Emphasis is on failure-safeness and ease of use. Jack can encode multiple tracks at once, good on SMP systems. It resumes its work if interrupted and keeps an eye on available HD space. It also supports freedb query at any time, even after encoding, and can try to query freedb for MP3s of which you do not know the CD anymore (provided you have a complete rip and know the track sequence).

Jami ,: GNU Jami (formerly SFLphone, GNU Ring) is a universal and distributed communication platform, implemented as free (libre) software, which respects the freedoms and privacy of users. Aimed at the general public as well as professionals, Jami provides all its users a universal communication tool, autonomous, libre, secure and built on a distributed architecture thus requiring no authority or central server to function. GNU Jami satisfies a high priority software goal of the Free Software Foundation, responding to the challenges of privacy on the Internet. Developed by Savoir-faire Linux, Jami takes advantage of an active development community thanks to the support of young Google Summer of Code developers as well as research partnerships with Polytechnique Montréal and the Université du Québec à Montréal.

Jebi: Jebi allows users to record AM or FM radio, TV, or other audio content to an MP3 stream and to publish this stream automatically as a podcast channel via RSS. The result is a Tivo-like capability for radio. Tuner cards are supported.

Jinzora: 'Jinzora' is a Web-based media streamer. It is primarily designed to stream MP3s but can be used for any media file that can stream from HTTP. It can be integrated into a PostNuke site, run as a standalone application, or be integrated into any PHP website. It can create playlists from any level of the application (including random playlist generation), and has a simple Web-based installation that does not require a database or any external applications.

Jjmpeg: jjmpeg is a hand-rolled object-oriented native Java binding for a number libraries in FFmpeg together with some re-usable high level components that make reading and writing media files trivial. The various C structures are represented directly by garbage collectable Java objects and native accessors. Functions take native objects directly simplifying the internal Java-side scaffolding.

Jokosher

Jokosher is a simple and poweful multi-track studio. Jokosher provides a complete application for recording, editing, mixing and exporting audio, and has been specifically designed with usability in mind. The developers behind Jokosher have re-thought audio production at every level, and created something devilishly simple to use.

Jokosher offers a strong featureset:
Ease Of Use - Easy to use interface, designed from the ground up. Jokosher uses concepts and language familiar to musicians, and is a breeze to use.
Editing - Simple editing with splitting, trimming and moving tools. Mixing Multi-track volume mixing with VU sliders.
Audio - Import audio (Ogg Vorbis, MP3, FLAC, WAV and anything else supported by GStreamer) into your projects.
Instruments - A range of instruments can be added to a project, and instruments can be renamed. Instruments can also be muted and soloed easily.
Audio - Export to MP3, Ogg Vorbis, FLAC, WAV and anything else GStreamer supports.

Jump Cutter Browser Extension: Skips silent parts in videos, in real time. Can be useful for watching lectures and other unedited videos.

K-Yamo: K-Yamo is an MP3 and Ogg Vorbis tagger with ID3v2 support. It can store ID3v1, ID3v2.3, or ID3v2.4 tags. It also stores pictures in the tags. K-Yamo supports multi-file editing. It can guess tags out of filenames, and fetches the missing parts from musicbrainz. It also cleans up your files into a structured filesystem tree which makes use of the tags in the files. Finally, it is a CD ripper with FreeDB support. A MySQL database can optionally be used for tagging.

K3b: 'K3b' is a CD and DVD burning application for GNU/Linux systems optimized for KDE. It provides a comfortable user interface to perform most CD/DVD burning tasks, such as creating an audio CD from a set of audio files or copying a CD. While the experienced user can influence all steps of the burning process, the beginner may find comfort in the automatic settings and the reasonable defaults which allow a quick start. The actual burning is done by the command line utilities cdrecord, cdrdao, and growisofs.

Kaku: Kaku is an online music player which supports many differnt platform Like YouTube, Vimeo ... etc. With Kaku, you can easily listen to all kinds of music with just few simple clicks and don't need to leave this desktop application.

Kalsamix: 'kalsamix' (formerly kamix) is a mixer for KDE and ALSA, with more features than kmix (or at least with more than kmix had when kamix was started). It supports channel splitting, levels storing/restoring, sync with external ALSA events, correct handling of "enumerated" elements, and selective item hiding/showing.

Kid3: Kid3 lets you easily and automatically tag MP3, Ogg Vorbis, FLAC, MPC, MP4/AAC, MP2, Opus, Speex, TrueAudio, WavPack, WMA, WAV and AIFF files (e.g. full albums), while supporting both ID3v1 and ID3v2 tags.

Kodi: Kodi (formerly known as XBMC) is an award-winning media player and entertainment hub, featuring a 10-foot user interface for use with televisions and remote controls. It allows users to play and view most videos, music, podcasts, and other digital media files from local and network storage media and the internet.

Kontalk: Kontalk is a free software, secure and distributed instant messaging driven by the community. Kontalk protocol is based on XMPP with end-to-end encryption in both server-to-server and server-to-client. Kontalks is basically for phone, but it's also available for desktop now (GNU/Linux, Windows, and macOS).

Krecspk: This is a candidate for deletion: Links broken. No archive.org entry. Email to maintainer broken. Poppy-one (talk) 15:07, 6 August 2018 (EDT) Krecspk is a "talking" client/server audio file recording and playback program that uses espeak, wiak, and sox for its underlying functionality. Designed with the visually impaired user in mind, it comes with two frontend user interface client components: a command-line operated client called krecspk, from which the overall package is named, and wrecspk, which is an X GUI client. It can record and play back a variety of audio formats such as Ogg, wav, and MP3, while offering easy and instant individual key-click configuration of recording quality in terms of compression, bit rate, and amplitude scaling.

Kwave: 'Kwave' is a 24-bit sound editor that allows simple operations, such as cut, copy, and paste. Some more effect functions with little complexity (Simple Filtering, Delay) are also implemented. More sophisticated analysis functions (spectrograms, sonagrams, pitch determination) are underway or partially done.

Kwavencoder: * 'kwavencoder' renamed to 'audiokonverter' 'kwavencoder' is a small utility to easily generate an Ogg, MP3, or FLAC out of a WAV file in Konqueror by right-clicking on it. The reverse is also possible. The package consists of various shell scripts and some Konqueror service menus.

LAME: LAME (LAME Ain't an MP3 Encoder) is a research project for learning about and improving MP3 encoding technoligy. LAME includes an mp3 encoding library, simple front end application, a much-improved psycho-acoustic model (GPSYCHO), and a graphical frame analyzer (MP3x).

LMMS: LMMS (formerly Linux MultiMedia Studio) is a free cross-platform alternative to commercial programs like FL Studio®, which allow you to produce music with your computer. This includes the creation of melodies and beats, the synthesis and mixing of sounds, and arranging of samples. You can have fun with your MIDI-keyboard and much more; all in a user-friendly and modern interface.

Lauloid: Lauloid was a singing synthesis program based on libsms. Now the repository includes documentation and scientific papers about the algorithms used in VOCALOID and UTAU. Reverse engineering results of the file formats and example score files will be published in this repo too.

Lazy: 'Lazy' is a console-based CD player with freedb support. It provides artist, album, and song name display, looking at the main freedb-server for unrecognized songs. It can also extract audio digitally if the CD-ROM drive does not have an analog audio cable.

Leon: Modified from README: Leon is an personal assistant who can live on your server. He does stuff when you ask him for. You can talk to him and he can talk to you. You can also text him and he can also text you. If you want to, Leon can communicate with you by being offline to protect your privacy.

Lib-Ray Video Tools: LRVT is the reference implementation of Lib-Ray, a video standard for fixed media with no technical restrictions like encryption or region codes. It is proposed as a replacement for restricted formats like DVD and Blu-ray, and builds on existing open standards like HTML5 and MKV. The end result is a DRM-free format that supports interactive menus and video playback from a disc, flash memory card or other fixed storage.

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.

Libcdio

Libcdio is a library for CD-ROM and CD image file access. It allows the developer to add CD access to an application without having to worry about the OS- and device-dependent properties of CD-ROM or the specific details of CD image formats. It includes pycdio, a Python interface to libcdio, and libcdio-paranoia, a library providing jitter-free and error-free audio extraction from CDs. The libcdio package also contains a number of utility programs, including:

cd-info, displays CD information ;
cd-drive, decribes CD-ROM/DVD drive characteristics ;
cd-read, performs low-level block reading of a CD or CD image ;
iso-info, displays ISO-9660 information from an ISO-9660 image ;
iso-read, extracts files from an ISO-9660 image ;
cd-paranoia - extracts audio from a CD in a jitter.

Libextractor: 'libextractor' extracts meta-data from files of arbitrary type. It uses helper-libraries to perform the actual extraction, and is trivially extendable by linking against external extractors for additional file types. Its goal is to provide developers of file-sharing networks, file managers, and WWW-indexing bots with a universal library to obtain meta-data about files. 'libextractor' includes the command "extract" that can extract meta-data from a file and print the results to stdout. Currently, it supports the formats HTML, PDF, PS, OLE2 (doc, xls, ppt), StarOffice, OpenOffice, MAN, DVI, MP3 (ID3v1, ID3v2), OGG, WAV, JPEG, GIF, PNG, TIFF, DEB, RPM, TAR(.GZ), ZIP, Real, QT, MPEG, RIFF (AVI), ASF, and ELF. It also detects various MIME types, and can compute hash functions (SHA-1, MD5, ripemd160). A Java binding (JNI) is available.

Libinstpatch: libInstPatch stands for lib-Instrument-Patch and is a library for processing digital sample based MIDI instrument "patch" files. The types of files libInstPatch supports are used for creating instrument sounds for wavetable synthesis. This library provides an object framework (based on GObject) to load patch files into, which can then be edited, converted, compressed and saved. More information can be found on the Project Swami website http://swamiproject.org This package contains the documentation for libinstpatch1 in /usr/share/gtk-doc/html/libinstpatch.

Libmodplug: libmodplug renders mod music files as raw audio data, for playing or conversion. libmodplug is based on the fast and high quality mod playing code written and released to the public domain by Olivier Lapicque. mod, .s3m, .it, .xm, and a number of lesser-known formats are supported. Optional features include high-quality resampling, bass expansion, surround and reverb.

Librevideojs: LibreVideoJS is a video player written in JavaScript compatible with LibreJS. It is based in VideoJS.

Librevideojs-wp: Free and responsive HTML 5 video player for Wordpress. It is very easy to use and has support for multiple resolutions and subtitles.

Libshout: 'libshout' allows applications to easily communicate and broadcast to an Icecast streaming media server. It handles the socket connections, metadata communication, and data streaming for the calling application, and lets developers focus on feature sets instead of implementation details.

Linphone: Linphone is an Internet phone or Voice Over IP phone (VoIP). It lets you make two-party phone calls using the Internet.

Ll-plugins: ll-plugins is a collection of LV2 plugins and a simple LV2 host.

LongPlayer: LongPlayer extends the functionality of a traditional MP3 player and is meant for people who listen to a large MP3 or Ogg Vorbis collection all day. It maximizes the time before you hear the same song (any song) again. The GUI allows you to view, rate, replay, delete, etc. current and previously heard songs, as well as define collections of music the program chooses from to fill the MP3 player's playlist. It does this by taking into account a song's rating of the song and how long it's been since you last listened to that song.

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