[LAU] [ANN] Qtractor 0.6.7 - The Lepton Acid beta release!

Rui Nuno Capela rncbc at rncbc.org
Wed May 27 15:34:48 UTC 2015

It's alive!

   Qtractor 0.6.7 (lepton acid beta) is out!

Release highlights:

* MIDI instrument rendering on audio export (NEW)
* MIDI clip editor view/event criteria persistence (NEW)
* MIDI clip editor resilience on record/overdub (FIX)
* Generic plugin form position persistence (NEW)
* JACK Transport/Timebase master option (NEW)

and yet more tiny lurking critters swatted ;)

Well, the major highlight to this release is in fact this brand new and 
way long overdue feature, seamlessly integrated to the faithful and 
regular audio track export function: MIDI track instrument plug-in 
rendering and mix-down (aka. freeze) is now real, as long their audio 
output goes onto selected buses, aka. stems, mix-groups, whatever a 
mix/mastering head would name it! nb. on the (very esquisite) Qtractor 
arch-model parlance, those are just called "audio output buses" and that 
ain't gonna change, any time soon, so stop it! A word of caution must be 
told by now: dedicated (JACK) audio output ports are off-the-grid, so sorry.

Maybe this silently makes a notch towards the DAW epitome, though 
Qtractor still claims to be just a plain and honest sequencer--with yet 
another DAW-like feature addition--the same as it ever was.

Nuff said.

Qtractor [1] is an audio/MIDI multi-track sequencer application written 
in C++ with the Qt framework [2]. Target platform is Linux, where the 
Jack Audio Connection Kit (JACK [3]) for audio and the Advanced Linux 
Sound Architecture (ALSA [4]) for MIDI are the main infrastructures to 
evolve as a fairly-featured Linux desktop audio workstation GUI, 
specially dedicated to the personal home-studio.


Project page:


- source tarball:

- source package (openSUSE 13.2):

- binary packages (openSUSE 13.2):

- wiki (help wanted!):

Weblog (upstream support):

   Qtractor is free, open-source software, distributed under the terms 
of the GNU General Public License (GPL [5]) version 2 or later.

- MIDI clip editor (aka. piano-roll) position, size, and view/event type 
criteria are now persistent, across session and user preferences 
application state.
- Generic plugin form widget position is now also preserved across 
open/save session cycles.
- MIDI clip editor resilience is about to get an improvement, fe. it 
doesn't close on stopping record/overdub anymore.
- Introducing (JACK) Timebase master setting as an option to Transport 
mode (cf. View/Options.../General/Transport/Timebase).
- LV2 plug-in MIDI/Event support now slanted for deprecation.
- Spanish (es) translation added, by avid Reyes Pucheta.
- It's live: audio track export (cf. Track/Export Tracks/Audio...) has 
been deeply refactored to finally include MIDI track/instrument plugins 
rendering (aka. freeze) on selected audio output buses on mix-down. 
- MIDI file player now does (N)RPN 14-bit controller events.
- Track properties dialog output bus switch fix/optimization; also fixed 
multiple DSSI instance reference count on close.
- Fixed for some strict tests for Qt4 vs. Qt5 configure builds.
- German (de) translation update (by Guido Scholz, thanks).


[1] Qtractor - An audio/MIDI multi-track sequencer

[2] Qt framework, C++ class library and tools for
     cross-platform application and UI development

[3] JACK Audio Connection Kit

[4] ALSA, Advanced Linux Sound Architecture

[5] GPL - GNU General Public License

See also:

Enjoy && keep the fun.
rncbc aka. Rui Nuno Capela

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