Qtractor 0.8.4

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.

Tags audio editor c++ qt jack
License GNU GPL
State beta

Recent Releases

0.8.421 Sep 2017 14:25 minor feature: Assigned MIDI Controllers to plug-in's Activate switch are Now finally saved and (re)loaded properly across sessions.. Audio clip panning option property is now being introduced.. Out-of-process (aka. dummy) VST plug-in inventory scanning Now restarts automatically and resumes processing in case of a premature exit/crash; VST plug-in inventory scan/cache. Persistency is now in place.. Desktop entry specification file is now finally independent From build/configure template chains.. Updated target path for freedesktop.org's AppStream metainfo File (formerly AppData).. Changing the View/Options.../Display/Custom/Style theme Takes effect immediately unless it's back to "(default)".. Slightly slower but better approximation to IEEE 32bit Floating point cubic root ie. cbrtf().
0.8.301 Jul 2017 20:45 minor feature: Make sure any just recorded clip filename is not reused While over the same track and session. (CRITICAL). LV2 Plug-in worker/schedule interface ring-buffer sizes Have been increased to 4KB.. track-name auto-incremental numbering sufwhen Modifying any other track property.. WSOLA vs. (lib)Rubberband time-stretching options are now Individualized on a per audio clip basis.. Long overdue, some brand new and fundamental icons revamp.. a tempo-map node add/update/remove rescaling with Regard to clip-lengths and automation/curve undo/redo.. a potential Activate automation/curve index clash, or aliasing, for any plug-ins that change upstream their. Parameter count or index order, on sessions saved with The old plug-in versions and vice-versa.
0.8.212 May 2017 00:25 minor feature: Track-name uniqueness is now being enforced, by adding an auto-incremental number sufwhenever necessary.. Attempt to raise an internal transient file-name registry to prevent automation/curve files to proliferate across. Several session load/save (re)cycles.. Track-height resizing now meets immediate visual feedback.. A brand new user preference global option is now available: View/Options.../Plugins/Editor/Select plug-in's editor (GUI) if more than one is available.. More gradient eye-candy on main track-view and piano-roll. Canvases, now showing left and right edge fake-shadows.. the time entry spin-boxes when changing time offset or length fields in BBT time format that goes across any. Tempo/time-signature change nodes.. French (fr) translation update.
0.8.119 Feb 2017 02:25 minor feature: The View/Options.../Display/Dialogs/Use native dialogs Option is now set initially off by default.. All tempo and time-signature labels are now displayed With one decimal digit, as it was in mostly everywhere Else but the time ruler/scale headers.. JACK transport tempo and time-signature changes are now Accepted, even though playback is not currently rolling; Also, changing (JACK) Timebase master setting (cf.View/ Options.../General/Transport/Timebase) will take effect. Immediately, not needing nor warning for session restart Anymore.. Track/Navigate/Next and Previous menu commands, finally to wrap around the current track list.. Current session (JACK) transport mode option switching is. Now being made accessible, from the main menu and drop-down Toolbar buttons, as well as user configurable PC-keyboard And/or MIDI controller shortcuts (cf. Transport/Mode/None, Slave, Master, Full).. some auto-backward play-head position flip-flopping. When opening a new session while the previous was still on Rolling/playing state, hopefully.. Added French man page.. MIDI clip changes are now saved unconditionally whenever The editor (piano-roll) is or not currently visible.. Audio clip peak/waveform files re-generation performance, Scalability and resilience have been slightly improved.. Some sanitary checks have been added to audio clip peak/ Waveform re-generation routine, as much to avoid empty, Blank, zero or negative-width faulty renderings.. Do not reset the Files tree-view widgets anymore, when Leaving any drag-and-drop operation (annoyingly, all Groups and sub-groups were being without appeal).. Make builds reproducible byte for byte, by getting rid of The configure build date and time stamps.
0.8.013 Dec 2016 01:25 major feature: 2016-11-21 - The Snobbiest Graviton Beta MIDI clip tools redo/undo processing refactored as much to avoid replication over multiple hash-linked clips; MIDI clip editor's floating selection/anchor event stability has been also improved, in regard to MIDI tools processing range. Auto-backward play-head location, when playback was last started, is now shown on main track-view, as a momentary dark-red vertical line marker. LV2 plugin-in parameter optimization: stuff consecutive series of plug-in's parameter value changes, as much as possible into one single undo/redo command. LV2_STATE__StateChanged is now recognized as a regular atom notification event and raising the current session dirty flag, as normal behavior. Adjusting clip selection edges is now possible and honored while on the the main track-view canvas. Audio peak file caching and rendering, as far as audio clip wave-forms are concerned, have been refactored and optimized a couple of notches higher, on the ephemeral and rather marginal throughput front ;). Fixed a potential crash on the singleton/unique application instance setup. Edit/Select Mode tool-buttons moved into single drop-down tool-button on the main and MIDI editor's tool-bar. Do not reset the current clip selection when updating the main track-view extents eg. while zooming in or out. Automation curve node editing auto-smoothing revisited; also fixed input MIDI RPN/NRPN running status processing, which was crippling some plug-in automation curve nodes, when saved in high-resolution 14-bit mode. Fixed the visual play-head position (vertical red line) while zooming in or out horizontally. Almost complete overhaul on the configure script command line options, wrt. installation directories specification, eg. --prefix, --bindir, --libdir, --datadir and --mandir. LV2 Plugin-in worker/schedule fix: make request/response ring-buffer writes in one go, hopefully atomic.