SEQUENCEUR AUDIO - MIDI Qtractor

[bluedid]

Oui, je teste d'abord tout ce qui concerne l'audio / Midi dans la branche principale, résoudre ensuite au cas par cas, rajouter des explications (le plus clair possible), voir ce qu'il manque par rapport au nombreux logiciels que j'utilise (en vidéo aussi).

Beaucoup de temps en tests, c'est le seul moyen pour comprendre comment le système fonctionne (à force de taper des commandes, on finit par mémoriser aussi); c'est plus facile ensuite pour réinstaller rapidement sur une autre machine. L'avantage c'est que TOUT est expliqué quand une erreur se produit et même en anglais cela ne me dérange pas trop. Le forum Gentoo est d'une richesse incroyable (et encore, je ne parle que du Forum Francais : http://forums.gentoo.org/viewforum-f...c786bf3a6dddf0).

Le challenge est aussi de prouver qu'un non-informaticien peut arriver aussi à s'en sortir ce qui peut amener d'autres utilisateurs (musiciens aussi !) pour participer au développement de Gentoo en audio / multimédia. Fedora, Mandriva, Ubuntu sont une porte d'entrée relativement accessible (j'aurais d'ailleurs toujours Puredyne sur chaque ordinateur), quelques-uns tentent ensuite l'aventure Gentooeste mais peu apparemment restent, découragement...

Enfin bon, grâce à ton aide et tes conseils / corrections Xavier, je m'accroche et ferais des p'tits tutos simples, le plus accessibles

[alchemist]

Ajouter l'overlay n'est pas très lourd. Une fois installé et intégré, il faut mettre "*" dans le fichier "/etc/eix-sync.conf" et lancer "eix-sync" à la place de "emerge --sync". Deux gros avantages :
- les overlays sont mis à jour
- update-eix est appelé après le sync, donc la base de données de eix est à jour.

[bluedid]

Ok, encore des commandes pas forcément facile à trouver dans la documentation "officielle", merci, bonne soirée

ok, faut mettre simplement * dans le fichier /etc/eix-sync.conf, ensuite eix-sync resynchronise ensuite le tout. Je viens de voir qu'il ne fallait pas mettre les guillemets :non (sur le 1er ordi ou la branche overlay pro-audio est installée, je fais des navettes entre les 3 ordis Gentoosabayonisés ! ).

[alchemist]

en effet, il ne faut pas mettre de guillemets. Pas évident de citer et de respecter la typographie française

[bluedid]

[bluedid]

Hello, :8)

Qtractor version 0.4.6 : http://qtractor.sourceforge.net/qtra...html#Downloads

Relit mes anciens projets sur Ubuntu 10.04 (alors que la 0.4.5 plantait dessus).

à noter que j'utiliserai exclusivement Ubuntu 10.04 jusqu'au festival des vieilles charrues vu que je fais partie du stand Ubuntu : http://www.audiokeys.net/forum/showt...-Charrues-2010

Reprise aussi sur Gentoo... ...à la rentrée

Bonne semaine

BlueDid :8)

[bluedid]

Qtractor version 0.4.6 nouveautés

Cette version apporte un sacré lot de nouveautés entre autre un éditeur d'évènements bien pratique. Si vous utilisez Ubuntu 10.04, il suffit de rajouter le dépôt Tango Studio http://www.audiokeys.net/forum/showt...cid-Lynx-10.04 et hop, plus besoin de compiler !

Voici les nouveautés (en anglais) :

• Introducing a non-painting edit sub-mode on the MIDI clip editor's piano-roll (see Edit/Select Mode/Edit Draw menu).
• The MIDI clip editor (aka piano-roll) is now a lot more quiet about saving its own dirty content, delegating all salvage questions to main session control.
• Don't show session restart message box when changing JACK transport mode option anymore.
• Dedicated MIDI control bus switching fixed. Was closing the wrong bus eventually and crashing the whole show with it (fixes bug #2989590).
• MIDI bank/program backout has been corrected on MIDI track properties dialog rejection (ie. user cancellation).
• MIDI bank select method has been corrected for tracks with no instrument defined (probably fixing bug #2987071).
• LV2 UI Instance and Data Access extension support added; reduce LV2 external UI parameter value update flickering.
• JACK session infrastructure support. (EXPERIMENTAL)
• Initial widget geometry and visibility persistence logic has been slightly revised as much to avoid crash failures due to wrong main widget hidden state.
• Initial mixer widget extents are now set reasonably larger.
• General source tree layout and build configuration change.
• Ever since smooth-ramping introduction that having at least one input-only buses were causing immediate playback crashes, now hopefully fixed.
• Refactored for common engine client nomenclature, primarily provided by JACK, then secondarily passed to ALSA Sequencer, getting rid of the JackUseExactName requirement and lifting the unique/single instance restriction in the process.
• Current JACK Transport, MMC Device, and MIDI Song Position pointer (SPP) control modes are now saved/loaded as part of session option properties.
• MIDI clip editor's context menu crash on Qt >= 4.6 has been fixed (resolving bug #2972603).
• An ancient double-free corruption has been finally fixed at the audio/MIDI bus connection persistence logic.
• Improved visibility of track state buttons text (R, M, S) when turned on dark colored themes.
• LV2 Save/Restore extension support kicks off.
• MIDI engine read-ahead period has been shortened to half than it was since inception--now it's a 500msec cycle.
• MIDI clip editor event list gets its due inline editing, for time, note, value/velocity and duration columns, just one double-click away over the target cell
• Add-plugin selection dialog position and extent are now remembered across invocations and application sessions (tipping by Frank Neumann).
• MIDI clip time-stretching is now made available through the same gestures as audio ones, by just shift+dragging either of the clip edges.
• Drag-and-copying plug-in instances (cloning) is now fixed with regard to parameter value replication.
• MIDI clip editor snap-per-beat setting is now independent from main multi-track view; File/Save As... dialog fixed; the current event selection is now kept floating as long as it's possible after editing command actions; finally, edit mode has been extended to free-hand event drawing, chalking off (piano roll) draw mode from the TODO list.
• Swing-quantize has finally made its overdue debut as an additional MIDI clip editor tool (see Tools/Quantize...).
• Almost since its inception, audio inserts were injecting garbage random noise when not being activated, now fixed.
• Dedicated audio output ports for MIDI track plugins, now have their connection persistence back in business due on session load.

J'essaierai de traduire, s'il y a des volontaires ce serait sympa tiens

Les traducteurs automatique en ligne ne sont pas très efficaces de toute façon pour les documentations techniques...

[bluedid]

Qtractor : Résolution pb suivi curseur

Il peut arriver que le curseur ne suive plus le projet (ou par saccade). En supprimant le fichier /home/nom_utilisateur/.config/rncbc.org/Qtractor.conf , tout re-fonctionne normalement. Il semblerait que le fichier .conf ne soit pas bien mis à jour lors d'une nouvelle version.

Merci à Jof Thibaut de Tango Studio pour l'info

[bluedid]

Bonjour, :8)

La toute dernière version de Qtractor (0.4.9) est dispo ici : http://qtractor.sourceforge.net/qtractor-index.html (version à compiler) ou directement dans les dépôts de Tango Studio.

J'ai commencé le projet pour le concours n°5 avec la version 0.4.8, dés tout à l'heure je continue avec cette version et je verrais bien... ...s'il y a des nouveautés intéressantes !

Bonne semaine

BlueDid :8)

[bluedid]

Bon j'ai utilisé le logiciel pendant toute l'après midi avec de multiples instruments virtuels et c'est tout bon ! (juste une seul pb avec une réverb Ladspa).

J'ai apprécié des petits plus comme l'affichage en grisés des pistes mutés, celles des pistes solo, des groupes en mode "boucle"...

Voici les "quelques" améliorations :

• Session file format saved on JACK session has been reverted to archive/zip bundle one (.qtz) now using temporary extraction directory when loading an existing JACK session.
• Main toolbar time and tempo widgets get their visual extents a bit more theme-friendlier .
• Some current working directory trickery is now in place avoiding JACK session directories to ever be picked as default, as much as possible.
• Ghost-playbacks are now avoided on audio clips that are artificially extended beyond their own audio file lengths.
• Recording clips now shown in a reddish shade; also, it's all now shown a bit more correctly, regarding the lead and within looping range.
• Custom tempo spin-box widgets now honoring the decimal point cursor positioning for integral up/down tempo value stepping.
• Audio recording latency is now compensated via automatic clip offsetting.
• Audio peak file generation is now pipelined on a single unique thread, instead of old one per audio clip file basis.
• MIDI tempo/time-signature map import problem has been hopefully fixed (bug #329791).
• Session and track names are now sanitized from slashes (bug# 625798@bugs.debian.org).
• Mouse wheel effect to sliders is now reversed.
• An appropriate export filename is now suggested as default (Track/export Tracks...).
• Follow-playhead automatism is now temporarily suspended while mouse cursor hovering prompts for any editing action (applies to main track- view and MIDI clip editor/piano-roll).
• Audio vs. MIDI time drift correction now takes jack_frame_time() as audio time reference.
• Audio buffering internal synchronization logic gets it bartered: three bools for a single byte flag.
• Connections are now preserved as possible when changing bus properties (View/Buses.../Update).
• A rare audio clip looping out-of-sync condition got squared, hopefully the last
• Yet again, the audio clip buffer/disk-streaming optimization has been almost completely redrawn: now there's one thread per audio track.
• Not replacing a session directory that already exists on loading an archive file (.qtz) is now fixed with an usable brand new untitled session.
• The major thread optimization has been slightly improved: the audio clip buffer/disk-streaming thread is now served in a FIFO manner (was LIFO).
• Custom time/tempo spin-box widget change fixup.
• Audio clip filename change segfault/crash fixed.
• Make sure all clips in multiple recording tracks start and end at the very same position whenever recording is already engaged and rolling.
• Hopeful fix to a potential audio buffering race condition, which was a probable cause of random muted clips (maybe fixing bug #3290178).
• Avoid recursive observer widget value updates.
• Almost complete rewrite of the main track-view selection and redrawing logic, taking advantage of the fundamentally static graphical backstore.
• Autonomic resizing of mixer bus splitter sizes.
• Improved timing for monitored MIDI events being buffered though MIDI instrument plugins, while playback/transport is rolling.
• Audio peak/waveform is now slightly tweaked from the early optimization days (master C++ guru has always said that was root of all evil anyway .
• MIDI controller mapping now with "Invert" value option. Also, new "Inputs" and "Outputs" buttons have been added as helpers for MIDI control port connections access.
• Main left pane vertical splitter resize hack, avoiding some track list update re-entrancy.
• Inserting a LV2 instrument/synth plugin on an audio track or bus were causing immediate crash, now fixed (give or take some event buffer stub).
• Plugin Activate All/Deactivate All menu fixing.
• Make sure given session directory has all the necessary access permission (read/write) while on session properties dialog.
• Dedicated audio outputs setting for instrument plugins inserted on the MIDI track properties dialog were not being honored, now fixed.
• Force update/close of all MIDI clips and their respective editors (piano-roll) if open, when changing the global session tempo (BPM).
• Removed the misleading "(Any)" special channel value while on MIDI controllers/learn dialog.
• Floating tool-tips now being shown also while on mouse rubber-banding (drag-select).
• Audio clip pitch-shifting change fixing; also, tooltips now showing semitones units instead of a clueless percentage.
• Rendering audio wave-forms while recording is now a little bit smoother than before.
• New main track-view clip selection tool: invert current selection (Edit/Select/Invert). The MIDI clip editor (piano-roll) also gets proper range selection tool (Edit/Select/Range).
• More eye-candy: muted/non-soloed tracks are now slightly shaded on the main track-view.
• A major hidden optimization has been implanted: all audio clip buffer/disk-streaming threads are finally merged into a single multiplexing thread (was one thread per audio clip longer than 3 sec. which was quite wasteful and creepy.
• All plugin list view changes are now properly signaled to track properties and bus manager dialogs and enable their respective acceptance.
• Two brand new MIDI tools make their appearance: Scale-Quantize and Snap-to-Scale. The later may be readily accessible from the MIDI clip editor toolbar and menu (check View/Toolbars/Scale and View/Scale).
• Mixer track strips are now completely redone whenever a track gets moved or re-ordered on main track list-view.
• Transport auto-backward option is now honored whenever a new session gets loaded.
• LV2 extension headers update.
• Got rid of recent QX11EmbedContainer bloating, while introducing gtk_init() as for LV2 GTK UI support stabilization.
• Tempo tap helper button was added to View/Tempo Map... dialog.
• Executable DSSI plug-in GUI detection fixed.
• Backout default session directory after cleaning up extracted archive/zip bundle session (.qtz).
• Files widget item selection feedback/focus fix.
• MIDI editor anchor event floating tool-tip fix.
• Probable fix for GtkStyle usage detection (might be gentoo specific).

L'édition en tout cas des multiples synthétiseurs virtuels que j'ai utilisé n'a posé aucun soucis même en fonctionnement ce qui n'était pas tout à fait le cas avant.

Testé sur Linux Tango Studio (basé sur Ubuntu Studio 10.04) avec une carte mère basique MSI P4M900, 1Go ddr2, Dual Core 4300, ddur Hitachi 1To, carte graphique 8400Gs et carte son M-Audio Audiophile 24/96.

Et hop, le projet en cours

bluedid_qtractor_0.4.9_2011_06_13ombre.jpg

[alchemist]

A voir la liste, ce n'est pas une petite mise à jour 0.0.+1...

[bluedid]

Et dire que ce n'est QUE la version 0.4.9 ! Y'en a qui sont persuadés que c'est une version expérimentale Alpha mais ici on est sur Linux, ce n'est pas le même univers car il n'y a pas de contraintes commerciales...

Tiens, je ne m'étais jamais posé la question mais il faut avouer qu'on ne voit pas forcément les retouches tout de suite dans ce logiciel, le développeur préférant privilégier l'efficacité par rapport au look

[bluedid]

Bonsoir, :8)

Qtractor version 0.5.1 : http://qtractor.sourceforge.net/qtra...html#Downloads

qtractor-screenshot10.jpg

Version très intéressante car il y a enfin l'automation!!! (pas encore essayé) et encore de nombreuses améliorations...

• More LADISH support: SIGTERM signal is now trapped for graceful application close.
• Improved paste-repeat snap precision when dealing with large repeat counts.
• Czech (cs) translation added, by Pavel Fric.
• Added a few snap-to-beat divisors (unusual Beat/5, Beat/7, Beat/9 and Beat/10) for completeness sake.
• Such a simple change of mind with a visual twist: the "A" track automation button/menu has now been moved to the right-most, as it belongs
• Auto-connection of dedicated audio outputs is now optional for default audio master bus, metronome, player and MIDI instrument plugin dedicated audio outputs.
• Finally, after a pitiful large brain-dead period, generic plugin forms are now showing all possible controllable plugin parameters featuring a paged, tabbed dialog, whenever applicable.
• Special hack/fix for JUCE based native VST plugins, which are the most actually found with a GUI editor, skipping explicit shared library unloading and thus avoiding some mysterious crashes on session close and/or application exit.
• Support for MIDI-fx plugins (native VST and/or LV2) is now implemented and functional (intra-chain only).
• Instrument plugin bank/program selection was found broken or dead in the water, specially on VSTi, now finally fixed again.
• VST plugin parameter value display on generic form is now back in business (were dead regarding value changes).
• All plugin's provided GUI editors are now honored by being popped up first, instead of the usual but good old generic plugin form.
• Long overdue implementation of a dedicated MIDI file player is now accessible from the MIDI files widget; one can play the whole SMF or just a single track or channel.
• Update to a newer VeSTige header, probably fixing an old 32 vs. 64 bit mismatch.
• Avoid JACK session filenames/paths to be ever shown; also avoid all buses ports (re)connections when JACK sessions are (re)loaded, given the fact that session management will take care of just that; more also, untitled/default session names are now also picked up to match current LADISH project name, obviously given by LADISH_PROJECT_NAME environment variable, whenever present (as suggested by Nedko Ardaunov).
• Paste-repeat floating selection has been fixed (was showing only the last repeated selection).
• Coherence of tempo changes on audio and MIDI clips, whether automatic time-stretching is in effect, has been slightly improved, hopefully fixed.
• Bold attempt to get linked (aka. ref-counted) audio and MIDI clips into practice (EXPERIMENTAL).
• Main track view now showing all clips above the grid.
• Added support for both new and older (deprecated uri) lv2_external_ui extension (by Nedko Ardaunov).
• Following yet another great idea, and implementation, by Holger Dehnhardt, who already brought us the new aux-send insert plugin, thanks again, the so-called direct access control option is now featured for any plugin parameter right from plugin listings eg. mixer strips.
• General resource consumption and management has been slightly improved, due to internal buses allocation optimization.
• Fixed nasty crash-bug that was severely affecting all sessions that had at least one insert (pseudo-)plugin on any audio input bus.
• All automation curve nodes are now relocated whenever disparate session sample-rate is detected on load.
• New aux-send/insert pseudo-plugin is now introduced, allowing to route any track audio output to any other audio output bus besides the nominal one -- thanks to an original implementation from Holger Dehnhardt.
• New immediate edit/loop-range settings from current clip extents, accessible on the main menu (Clip/Range Set, Loop Set) and from MIDI clip editor menu as well (File/Range Set, Loop Set).
• MIDI Names XML files (*.midnam) may now be imported into MIDI instrument definitions. (EXPERIMENTAL)
• Avoid cursor reset while editing MIDI events list (fixes bug #3380259, reported by Frank Neumann).
• Just some typos fixing (patch #3378382 by c-korn).
• Track view automation curve editing mode has been slightly fixed, now allowing for other previously existing point-and-click mouse operations.
• Default automation curve mode is now preserved (following a suggestion by Alexandre Prokoudine, thanks).

Testé avec succès sur des montages de projets chez un copain musicien (et ordi un peu ancien) tout à l'heure de longues heures avec synthétiseurs Dssi, effets Ladspa... :super

Vu toutes les améliorations avec une simple incrémentation, de 0.1 dans le numéro de version, je me demande à quel niveau se situera le niveau de fonctionnalité quand sortira la version 1.0!!!!! (dans 5 ans? :oups)

[bluedid]

Qtractor Version 0.5.3 (à compiler) disponible (directement avec la mise à jour de Linux Tango Studio comme à chaque fois d'ailleurs )

• Fixed initial LV2 plugin UI widget/window titles.
• Attempt to get any brand new LV2 plugins Qt4 enabled UI's working on either slv2 and lilv build modes (nailed by falkTX, thanks).
• Current clip is ultimately inferred from the one under the play-head position and current selected track; the last one clicked over and/or selected still has precedence (following request by Loiugi Verona).
• Drag-moving clips horizontally with the keyboard arrow-keys just got a step better with a fixed minimum of one pixel, depending still on the current snap-per-beat setting and horizontal zoom level (as suggested by Louigi Verona, thanks).
• Get maximum and minimum peak values back when drawing audio waveforms.
• Automation play/feedback has been missed to show on those plugins that provide their own GUI, now on par with all the rest 'homebrew' widgets (eg. generic plugin properties dialog).
• All plugin parameters automation and selection were left inaccessible until the generic native plugin dialog is eventually shown, now fixed (re. bug #3463916).

En règle générale, il faut attendre une nouvelle distribution pour obtenir la dernière version de Qtractor sinon il faut compiler (pas forcément difficile mais pas forcément évident pour le débutant) d'ou l'intêrêt d'avoir une distribution spécialisée (en l'occurence MAO) bien maintenue ou de rajouter des dépôts externe (éventuellement plus de risques) ou passer en expérimental avancé!!! (bon alors là, c'est plus fun! )

[bluedid]

Voici un petit exemple d'automation pouvant intervenir sur le gain, le panoramique mais aussi sur les paramètres d'effets

qtractor_automation_valse_ton_bluedid_2012_01_20.jpg

Un tuto (vidéo) sera prévu bientôt