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KDE Sound Application

Score 89%



Link:  Link
Minimum required   Qt 4.x
Downloads:  8303
Submitted:  Apr 14 2007
Updated:  Oct 9 2015


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


- Multi-track audio and MIDI sequencing and recording.
- Developed on pure Qt C++ application and UI framework.
- Uses JACK for audio and ALSA sequencer for MIDI
as multimedia infrastructures.
- Traditional multi-track tape recorder control paradigm.
- Audio file formats support: OGG (via libvorbis),
MP3 (via libmad, playback only), WAV, FLAC, AIFF
and many, many more (via libsndfile).
- Standard MIDI files support (format 0 and 1).
- Non-destructive, non-linear editing.
- Unlimited number of tracks per session/project.
- Unlimited number of overlapping clips per track.
- XML encoded session/project description files (SDI).
- Point-and-click, multi-select, drag-and-drop interaction
(drag, move, drop, cut, copy, paste, paste-repeat, delete, split, merge).
- Unlimited undo/redo.
- Built-in mixer and monitor controls.
- Built-in connection patchbay control and persistence
(a-la QjackCtl).
- LADSPA, DSSI, native VST and LV2 plug-ins support.
- Unlimited number of plug-ins per track or bus.
- Plug-in presets, programs and chunk/configurations support.
- Unlimited audio effect send/return inserts per track or bus.
- Loop-recording/takes.
- Audio/MIDI clip fade-in/out (linear, quadratic, cubic).
- Audio/MIDI clip gain/volume, normalize, export.
- Audio/MIDI track and plugin parameter automation (dynamic curves,
sample&hold, linear and spline modes).
- Audio clip time-stretching (WSOLA-like or via librubberband),
pitch-shifting (via librubberband [9]) and seamless sample-rate
conversion (via libsamplerate).
- Audio/MIDI track export (mix-down, merge).
- Audio/MIDI metronome bar/beat clicks.
- Unlimited tempo/time-signature map.
- Unlimited location/bar markers.
- MIDI clip editor (matrix/piano roll).
- MIDI instrument definitions (a-la Cakewalk(tm) (*.ins));
SoundFont (*.sf2) and MIDI Names XML (*.midnam) files also supported..
- MIDI controller mapping/learn/assignment (mixer and plug-in parameters).
- MIDI system exclusive (SysEx) setups.
- JACK transport sync master/slave.
- JACK session support.
- NSM (Non Session Management) support.
- MMC control surface enabled.
- MIDI Song Position cueing support.
- Configurable keyboard shortcuts.


0.7.1 2015-10-09 Meson Dope Beta

- Fixed an ages old MIDI track/channel instrument mapping (bank, program) issue that prevented normal all-shut-up messages from being sent to MIDI output buses/ports on playback stop.
- Messages standard output capture has been improved again, now in both ways a non-blocking pipe may get.
- Fixed port on MIDI 14-bit controllers input caching.
- Fixed false value readings on the MIDI clip editor (aka. piano-roll) tool-tips, when dragging a note velocity or controller value outside the acceptable nominal range (eg. 0-127).
- Added LV2_BUF_SIZE__nominalBlockLength option support (patch by falktx aka. Filipe Coelho, thanks).
- Fixed wrong initial tempo/time-signature display when session is loaded from command line.
- LV2 plug-in UI GTK2 and X11 in Qt5 host native support added.
- Transport/Auto Backward feature now honoring (auto return) to same current location precedence as Transport/Backward.
- Single/unique application instance control adapted to Qt5/X11 (cf. configure --enable-xunique).
- MIDI Tools/Transpose, Resize duration display format (frames, time or BBT) have been fixed.
- Build fix for Qt5.5 (patch by KaOS, thanks).
- MIDI Tools/Quantize et al. are tentatively being corrected to take event times as relative to THE beginning of session, instead of MIDI clip start location.

0.7.0 2015-07-24 Muon Base Beta

- Complete rewrite of Qt4 vs. Qt5 configure builds.
- Revised MIDI Controlllers catch-up algorithm.
- Mixer multi-row layout gets a little bit of a fairness fix.
- Non-continuous MIDI Controllers now have their Hook and Latch options disabled as those are found not applicable,
- As an alternative to PC-keyboard shortcuts, MIDI controllers are now also assignable and configurable for any of the main menu command actions, all from the same old configuration dialog (Help/Shortcuts...).
- Fixed missing Track and Clip sub-menus from Edit/context-menu that were found AWOL ever since after the Lazy Tachyon beta release (> 0.6.6).
- An off-by-one bar position (as in BBT, bar, beat and ticks) has been purportedly fixed as long as LV2 Time/Position atom event transfer goes.
- French (fr) translation line to desktop file added (patch by Olivier Humbert, thanks).
- A new top-level widget window geometry state save and restore sub-routine is now in effect.
- Improved MIDI clip editor resilience across tempo and time-signature changes.
- Keyboard shortcuts configuration (Help/Shortcuts...) now lists complete menu/action path where available.
- Fixed in-flight VST plugin editor (GUI) resizing.
- Added support to LV2UI_portMap extension, found really handy for the cases where you have multiple plugins with different port configurations and a single common UI to drive them all (pull request by Hanspeter Portner aka. ventosus, thanks).

O.6.7 2015-05-27 Lepton Acid Beta
O.6.6 2015-03-29 Lazy Tachyon Beta
O.6.5 2015-01-30 Fermion Ray Beta
O.6.4 2014-11-24 Baryon Throne Beta
O.6.3 2014-09-22 Armed Hadron Beta
O.6.2 2014-07-07 Boson Walk Beta
O.6.1 2014-04-29 Bitsy Sweet Beta
0.6.0 2014-03-21 Byte Bald Beta.

SUSE(openSUSE 13.2 Binary RPM (i586))
SUSE(openSUSE 13.2 Binary RPM (x86_64))
SUSE(openSUSE 13.2 Source RPM)
openSUSE Tumbleweed
openSUSE 13.2
Debian 8.0 (amd64)
Debian 8.0 (i386)
Fedora 22 (x86_64)
Fedora 22 (i686)
Fedora 22 (i686)
Fedora 22 (x86_64)
Ubuntu 15.04 (amd64)
Ubuntu 15.04 (i386)
Ubuntu 14.04 (i386)
Ubuntu 14.04 (amd64)
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 Again ... where is the program??

 by dovidhalevi on: Apr 30 2014
Score 30%

Also latest 0.6.1

Trying to compile fails as well. It is including qt5 includes!!

Reply to this



 by MoonDragon on: Jun 12 2014
Score 50%

Qtractor is a joy to use, reminds me a lot of emagic logic without the objects layers.
This is a very usable program and does the job without any hiccups!

Reply to this


 0.6.3 Debian/Ubuntu Dependencies

 by dovidhalevi on: Sep 23 2014
Score 50%

Debs will not install correctly. Dependencies listed are incorrect/obsolete:
qtractor : Depends: libjack0 but it is not going to be installed
Depends: liblilv-0 but it is not installable
Depends: liblo0ldbl but it is not installable
Depends: libserd-0 but it is not installable
Depends: libsord-0 but it is not installable
Depends: libsratom-0 but it is not installable
Depends: libsuil-0 but it is not installable

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 Re: 0.6.3 Debian/Ubuntu Dependencies

 by rncbc on: Sep 23 2014
Score 50%

all respective dependencies are also available from (my) OBS repository (http://download.opensuse.org/repositories/home:/rncbc)


rncbc aka Rui Nuno Capela

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 Re: Re: 0.6.3 Debian/Ubuntu Dependencies

 by dovidhalevi on: Sep 23 2014
Score 50%

Not the point.
The distro's repositories have these libs with slightly different names so a package for the distro should site them: For example, Debian has libserd-0-0 instead of libserd-0.

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 by monoton on: Dec 11 2014
Score 50%

is not

linux mint 17.1 x64


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 Recurring Problem, Time to Address!

 by dovidhalevi on: Jul 26 2015
Score 50%

This and recent qjackctl are looking for libjack0. This is an older version and not compatible with recent distro upgrades of Debian, etc.

I can compile it.

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