FSLAC ~ Free Semi-Lossless Audio Codec


constrained VBR (CVBR) version of the publicly available open-source lossless audio coder FLAC.

FLAC, being a mathematically lossless audio codec, inevitably creates VBR streams as compressed files. Depending on the «difficulty» of coding each segment of the audio signal, the instantaneous coding bit-rate can be quite high. However, one can observe that, during passages of high FLAC bit-rate, the coded audio also exhibits the greatest ability of psychoacoustic masking. FSLAC exploits this property to limit the maximum instantaneous bit-rate of the compressed file. It does so by detecting the difficult audio blocks (by measuring their predictability via linear-prediction error energy calculations) and requantizing each of the detected blocks to a lower bit-depth, thereby reducing the bit-rate needed for lossless coding of that block. To prevent the quantization error from becoming audible (or visible in a spectrogram), simple adaptive noise shaping is used.

This approach is similar to the one used by LossyWAV, but differs in two important aspects. First, FSLAC is not a stand-alone pre-processor but instead is coupled with a FLAC encoder and, hence, directly creates FLAC compatible compressed files. Second, FSLAC only alters the high-bit-rate audio segments, not (almost) all parts of the audio input as LossyWAV does. The coded audio, therefore, remains perceptually lossless. In addition, it is worth noting that, due to its simplicity, FSLAC encoding is very fast. All of these features make FSLAC attractive for audio production and archival applications.

www.ecodis.de/audio.htm#fslac
hydrogenaud.io/index.php?topic=122390

WildMidi ~ A Cross-Platform Software Synthesizer


WildMIDI is a simple software MIDI player which has a core software synthesizer (softsynth) library that can be used with other applications.

www.mindwerks.net/projects/wildmidi

github.com/Mindwerks/wildmidi

TAP-plugins ~ LADSPA Linux Plugins


Tom’s Audio Processing plugins is a selection of LADSPA plugins for audio engineering on the Linux platform. Intended for use in a professional DAW environment such as Ardour, it includes high quality reverberation, echo, eq, limiter & more.

tomscii.sig7.se/tap-plugins/index

sourceforge.net/projects/tap-plugins
github.com/tomszilagyi/tap-plugins

QMP3Gain ~ MP3Gain Graphical User Interface


User interface front end supporting famous MP3Gain engine which analyzes and losslessly adjusts MP3 files to a specified target volume. A complete re-creation (made in QT5) of the original MP3Gain GUI, however it can be run on more platforms.

Features:

  • MP3
  • volume
  • lossless
  • multiplatform
  • GUI

sourceforge.net/projects/qmp3gain

VirtuoZo! ~ Find Scales, Chords & Generate Music


This software can be used to search scales & chords from a large and expandable database (XML). Thanks to the jmusic project (jmusic.sourceforge.io), this is also possible to generate music starting from these scales & chords and export the result to MIDI file.

Features:

  • Scales & chords finder
  • Music generator (MIDI)

sourceforge.net/projects/virtuozo

Cantata ~ GUI MPD Audio Player


A graphical (Qt5) client for MPD, supporting the following features:

  1. Supports Linux, macOS, Windows, and Haiku. NOTE: Only Linux actively supported as of 2.3.3
  2. Multiple MPD collections.
  3. Highly customisable layout.
  4. Songs (optionally) grouped by album in play queue.
  5. Context view to show artist, album, and song information of current track.
  6. Simple tag editor.
  7. File organizer – use tags to organize files and folders.
  8. Ability to calculate ReplyGain tags. (Linux only, and if relevant libraries installed)
  9. Dynamic playlists.
  10. Smart Playlists.
  11. Online services; Jamendo, Magnatune, SoundCloud, and Podcasts.
  12. Radio stream support – with the ability to search for streams via TuneIn, ShoutCast, or Dirble.
  13. USB-Mass-Storage and MTP device support. (Linux only, and if relevant libraries installed)
  14. Audio CD ripping and playback. (Linux only, and if relevant libraries installed)
  15. Playback of non-MPD songs – via simple in-built HTTP server.
  16. MPRISv2 DBUS interface.
  17. Ratings support.
  18. “Partitions” support.

github.com/CDrummond/cantata

Cider ~ Apple Music Alternative


A new cross-platform Apple Music experience based on Electron and Vue.js written from scratch with performance in mind. A new look into listening and enjoying Apple Music in style and performance. 🚀 (Work in progress, expect bugs.) an Apple Music subscription is required to use this application. This may change in the future when we add local file support.

github.com/ciderapp/Cider