Show-off my open-source stuff, mostly of the Linux Audio/MIDI genre

The Flirty Ditz

Qtractor is an audio/MIDI multi-track sequencer application, written in C++ on top of Qt Software's Qt4 framework, having JACK and ALSA as its main infrastructures and Linux as native and exclusive platform. Specially suited to the lone-wolf composer, arranger and (re)creative music-maker personal home-studio, it still hopes to evolve as a fairly featured desktop audio/MIDI workstation or at least, a prototypical part of it ;)


Qtractor 0.2.2 (flirty ditz) is out!

Release highlights:

  • Stephen Doonan joined documentation team and revised the user manual.
  • Spurious MIDI events recording bug now fixed.
  • Audio track monitoring and plugin loop processing slightly improved if not fixed.
  • MIDI clip editor improved precision and correct snapping.
  • Multiple track mute and solo one-click toggling (NEW).
  • Better MIDI connection persistance across sessions.
  • Record-armed tracks aren't muted on playback anymore (NEW).
  • Optimized audio clip waveform caching and drawing.
  • Many more or less fixes (see change-log).

ENOS08@isep.ipp.pt

Saturday, September the 6th, I was once again pleased to attend the second National openSUSE Portuguese Meeting (ENOS), in a renewed invitation from Carlos Gonçalves. This time I had a chance to talk around the current Linux Audio/MIDI scenario and, of course, my brainchild Qtractor.

The Fainty Diva

Howdy! Vacation time is now gone and the rentrée is upon us, at least on this hemisphere side of the globe ;) Silly season, beloved August, summertime it is. And before it's too late, I'm proud to announce that a new alpha has summoned to the challenge:

Qtractor 0.2.1 (fainty diva) has been released!

Release highlights:

  • Gradient eye-candy (NEW)
  • DSSI multi-instance plug-in issue fixed
  • Clip waveform/piano-roll rendered while recording (NEW)
  • MIDI pitch-bend, omni-channel filtering and recording fixes
  • Play-head positioning in the thumb-view (NEW)
  • And many few more (see change-log below:)

The Frolic Demoiselle


Qtractor is an audio/MIDI multi-track sequencer application written in C++ with the Qt4 framework [1]. Target platform is Linux, where the a Jack Audio Connection Kit (JACK) for audio [2] and the Advanced Linux Sound Architecture (ALSA) for MIDI [3] are the main infrastructures to evolve as a fairly-featured Linux desktop audio workstation GUI, specially dedicated to the personal home-studio.

Qtractor is free open-source software, distributed under the GNU General Public License (GPL) [15].

Qsynth 0.3.3 Knobs Galore!

Thanks to Pedro Lopez-Cabanillas and Guido Scholz, this Qsynth release is now a reality. Main new features are the new rotating knob style options, first full translations, German and Spanish and last but not least, there's this WindowsTM all-in-one package available (includes FluidSynth port) for your (sick:) pleasure only. Please read below the brilliant notes from Pedro about this breakthrouth release. Yes, before's too late:

Qsynth 0.3.3 (stable) is out!

For the clueless, Qsynth is a Qt GUI frontend application to the excellent FluidSynth soft-synth library implementation for the SoundFont 2 specification.

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