Helm ~ Open Source Synthesizer


Helm runs in GNU/Linux, Mac OSX and Windows. Run Helm as a standalone synthesizer or as an LV2, VST, VST3 or AU plugin. Comes in both 32-bit and 64-bit versions.

helm_screenshot

tytel.org/helm

PyKaraoke ~ Cross-platform Karaoke


PyKaraoke is a free karaoke player for Linux, FreeBSD, NetBSD, Windows, OSX and GP2X.

You can use this program to play your collection of CDG, MIDI and MPEG karaoke songs. No songs are provided, you must obtain these from elsewhere.

Visit here to find out more about what a CDG or MP3+G file is. In short, CDG is the format of professional karaoke CDs. These CDs can be ripped to your hard disk, and turned into a .mp3 file together with a .cdg file. This player gives you the ability to play those mp3+cdg files.

PyKaraoke Features:

  • CDG (MP3+G, OGG+G, WAV+G) playback – Play standard CDG karaoke files
  • MIDI (.MID/.KAR) playback – Play MIDI format karaoke files
  • MPEG playback – Play karaoke songs and movies in MPEG format
  • Other formats – Play any other video formats by launching an external media player
  • Playlist – Queue up songs, sit back and enjoy
  • Searchable song database – Easily find your songs from the main screen
  • Search inside ZIP files – Play MP3+G/MIDI files wrapped in ZIP files
  • Cross-platform – Runs on Windows, Linux, BSD, OSX and GP2X
  • Mini Frontend – Additional mini-frontend for low res displays and handhelds
  • Export to MPEG – Convert CDG and KAR files to MPG files (command line only)

http://www.kibosh.org/pykaraoke
https://sourceforge.net/projects/pykaraoke

VoodooHDA ~ Mac Open IHDA Driver


VoodooHDA is an open source audio driver for devices compliant with the Intel High Definition Audio specification. It is intended as a replacement for AppleHDA on Mac OS X with support for a wide range of audio controllers and codecs.

Features:

  • automatic recognition of all HDA codecs
  • test jacks for autoswitch
  • control panel for fine tuning
  • sound treatment includes stereo enhancements
  • since v2.8 it works with two sound cards
  • v2.9 creates 5.1 channel as one device

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sourceforge.net/projects/voodoohda/

GrandOrgue ~ Virtual Pipe Organ


GrandOrgue is a sample based pipe organ simulator. When connected to MIDI keyboards and an audio system, it can accurately simulate the sound of a real pipe organ. This application has builds for Linux, Windows and OSX.

Features:</i>

  • Play sample sets
  • GUI console

GrandOrgue

sourceforge.net/projects/ourorgan/
sourceforge.net/p/ourorgan/wiki/Home

Spek ~ Acoustic Spectrum Analyzer


Spek (IPA: /spɛk/, ‘bacon’ in Dutch) helps to analyse your audio files by showing their spectrogram. Spek is free software available for Unix, Windows and Mac OS X.

Features:

  • Supports all popular lossy and lossless audio file formats thanks to the FFmpeg libraries.
  • Ultra-fast signal processing, uses multiple threads to further speed up the analysis.
  • Shows the codec name and the audio signal parameters.
  • Allows to save the spectrogram as an image file.
  • Drag-and-drop support; associates with common audio file formats.
  • Auto-fitting time, frequency and spectral density rulers.
  • Adjustable spectral density range.
  • Translated into 19 languages.

spek

http://spek.cc/
http://github.com/alexkay/spek

Mkchromecast ~ Linux & Mac Casting


This is a program to cast your macOS audio, or Linux audio to your Google Cast devices or Sonos speakers. It can also cast video files.

It is written for Python3, and it can stream via  node.js,parec (Linux), ffmpeg, or avconvMkchromecast is capable of using lossy and lossless audio formats provided that ffmpeg, avconv (Linux), or parec (Linux) are installed. It also supports Multi-room group playback, and 24-bit/96kHz high audio resolution. Additionally, a system tray menu is available.

https://mkchromecast.com/
https://github.com/muammar/mkchromecast