Linux-audio-dev January 2011

linux-audio-dev@lists.linuxaudio.org

66 participants
37 discussions

[ANN] Qtractor 0.4.8 - The Fiery Demigoddess released!

by Rui Nuno Capela

howdy so i lied, bluffed all the way, so what? should I be sorry? what you'd expect from this one self-called ber-procrastinator ? and then there's hope. alas, not the messiah, rather my development drive at my own pace. believe it or not, it is on-going and it will sure happen real soon ;) no sweat. The whole automation prophecy will be realized and delivered. yes, TYOQA just failed, slipped a bit. it doesn't mean it was abandoned though or, uh, procrastinated... well, it's only a happy new year after all:) the road to automation is being already being paved and walked although, i must say, it is no yellow-bricked one. the drive has begun. definitely, 2011 will be TYOQA (aha, read that again with a bold tee:)! more than automation, which infrastructure is already lurking in there, trus me, all work is being carried out at the backyard for the time being. blossoms might just pop out this spring ;) one thing i may wish to leave sound and clear: it is very likely that, in the very near future, that there will be some dot-release before the all-mighty-one release, whatever. now that the surprise-effect is gone, the long overdue and hailed beta release cycle that will present you and carve its deeds on stone with the dynamic-curves and automation features et al., will be nothing less nor before the coming version numbered as the 0.5.x scheme. then, and only then, the current alpha-cycle will be concluded. of course, that will be also the time for translations to be called in. just be a little more patient :) and then i lied a second time, when said those parodied f&d release code-names were exhausted. thanks to a lengthy but intermittent fall/winter-of-coding period, i had the chance to wake up one morning with the imagination score in its lowest end and roar an inner WTH! as they say around here, there's no second without a third. so another lie is there waiting to be told. or is it not? there, one would say: time will tell... Release highlights: * Archive/Zip session file bundle (save as... .qtz) (NEW) * Mixer MIDI controller mapping/learn (NEW) * LV2 GTK UI support (NEW) * LV2 Persist extension support (NEW) * MIDI Tools on main track/clips view(NEW) * Floating tool-tips while dragging/moving/pasting (NEW) * Rescale and Timeshift MIDI tools (NEW) * MIDI Quantize percentage (NEW) * Track range selection (NEW) * Audio insert send, wet/dry controls (NEW) * Audio clip pitch-shifting (FIX) * Metronome dedicated outputs related crash (FIX) * Stop transport tool/button action (NEW) * Mouse-wheel zooming (NEW) and a few more assorted features and fixes--see below the complete (boring) change-log for gruesome details. Nuff said. Qtractor 0.4.8 (fiery demigoddess) released! Website: http://qtractor.sourceforge.net Project page: http://sourceforge.net/projects/qtractor Downloads: - source tarball: http://downloads.sourceforge.net/qtractor/qtractor-0.4.8.tar.gz - source package (openSUSE 11.3): http://downloads.sourceforge.net/qtractor/qtractor-0.4.8-2.rncbc.suse113.sr… - binary packages (openSUSE 11.3): http://downloads.sourceforge.net/qtractor/qtractor-0.4.8-2.rncbc.suse113.i5… http://downloads.sourceforge.net/qtractor/qtractor-0.4.8-2.rncbc.suse113.x8… - user manual (archeologically dated): http://downloads.sourceforge.net/qtractor/qtractor-0.3.0-user-manual.pdf Weblog (upstream support): http://www.rncbc.org License: Qtractor is free, openosource software, distributed under the terms of the GNU General Public License (GPL) version 2 or later. Change-log: - MIDI controller mapping/learn is now possible on all mixer controls (monitor, gain, panning, record, mute, solo). - An internal rewrite (aka. refactoring) have been carried out, making sure that all track state action buttons (R, M, S) are now all under the observer pattern umbrella. - Single track range selection is now available on main menu (Edit/Select/Track Range; default keyboard shortcut: Ctrl+Shift+R); additionally to vertical range and horizontal track actions (Edit/Select/Range, Track) all these operations can now toggle over the previous selection. - Direct clip selection from Files list item has been brute-forcefully implemented (after being challenged by Jiri Prochaszka aka Anchakor:). - Files tree widget sticky "New Group" item fixed. - A new menu option has been added (View/Tool Tips) to show/hide a floating tool-tip while dragging, moving, resizing or pasting selected clips or events over the main tracks view and MIDI clip editor (piano-roll) respectively, displaying current target position and status. - Attempt to reset audio/MIDI time drift compensator on every engine start and loop turnaround. - Moving the punch-out marker over the main track time ruler was failing to shrink the punch-in/out range, now it does (not). - MIDI clip tools (quantize, transpose, normalize, randomize, resize, rescale and the new timeshift) are now all accessible from the main tracks view (Edit/Clip/Tools menu) and apply to all events on current selected clip(s). - LV2 Persist extension support is being introduced. - A new timeshift MIDI tool has been added, after an awesome patch by Jiri Prochaszka aka Anchakor; applies to selected events between edit markers, distorting their time and duration (optionally), either slowing down and accelerating, based on a given parameter P value. - Audio clip/buffer pitch-shifting fixes with regard to latency correction due on the RubberBand library one-pass (real-time) processing mode. - New Send Gain and Dry/Wet control parameters have been implemented for audio Inserts pseudo-plugins. - MIDI channel/master volume enqueued events are now affected by the current track/bus volume (0-100%). - Prevent old rounding error when resetting to plugin parameter default value with the mouse middle-button click while hovering a slider widget (observer). - A quantize percentage has been added to MIDI clip editor quantize tool (Tool/Quantize...) for time and duration quantization (0% for none; 100% for full regular quantization). - Metronome bus/ports are now created at engine start and not when user switches it on anymore. - Make sure all audio clip buffers are in sync upon smooth-ramping going off and playback is rolling. - Copy-pasting across controller event types is now possible on the MIDI clip editor (aka piano-roll). - Finally indulged, the genuine transport stop button makes its appearance on main toolbar and menu. - Main tracks grid visibility option (View/Snap/Grid). - Yet another off-by-one (frame) audio buffer bug got squashed away: rare symptom was that some audio clips were being left dead silent right after playback of their first looping period. - Plugin parameter name/label now a proper attribute of its respective MIDI Controller observer instance, allowing to be shown on dialog title (MIDI learn). - Default session file format saved on JACK session demand is now the bundle archive/zip one (.qtz). - Plugin selection dialog now shows whether a plugin features its own editor (GUI) and/or external state configuration (EXT). - Help/Shortcuts... window positioning and sizing are now preserved. - All plugin chain changes over the track properties dialog now sure counts as a dirty action (possibly fixing bug #3104129). - Newly extracted archive/zip session directories are now removed automatically from the file-system on session close, prompting the user for confirmation (cf. View/Options.../Display/Confirm Removals). - Ctrl+mouse-wheel is now set for zooming in/out, on main track-view and all applicable MIDI clip editor views (piano-roll), according to current zoom mode (see View/Zoom Horizontal, Vertical or All for both ways simultaneously). - New MIDI clip editor (piano-roll) mouse hovering effect (eye-candy++). - After too many a user request, a brand new session archive file type is being introduced (.qtz) which tries to bundle in one single zip archive all the media and contents of a session. - Add that to eye-candy: either loop or punch-in/out outer ranges are now shaded on the main track-view, thumb-view and MIDI clip editor (piano-roll) views. - LV2 GTK UI plug-in hosting is now roaring its ugly head (EXPERIMENTAL). - Ignore all initial and decremental notifications of audio engine's buffer-size changes. - Internal audio buffer loop points were not being set properly for non-zero clip offsets, leaving some as severely out-of-sync while rolling over loop turns. Now fixed again, hopefully. - Avoid audio peak file clashing when deriving from audio sample files with distinct absolute paths but the very same file (base)name. - A new MIDI editor (piano-roll) tool has been added: Rescale event times, durations and/or values by a percentage between 1 and 1000% (adapted thanks to patch #3081954, by Jesse Lucas). - Attempt to mitigate audio clip sequencing glitches on single-core/single-thread machines. cheers && enjoy (be happy!) -- rncbc aka Rui Nuno Capela rncbc(a)rncbc.org

13 years, 11 months

[Somewhat OT] Running QSC Venue Manager on wine ?

by fons＠kokkinizita.net

Hello all, Anyone managed to run QSC's Venue Manager software on wine ? <http://www.qscaudio.com/products/software/qscontrolnet/> Tried it yesterday - running the installer displays a message that it is checking for 'required Microsoft components' and that this could take 5 to 10 minutes. But it was still checking an hour later... But I'm a wine noob, so maybe I'm just missing the obvious... Ciao, -- FA There are three of them, and Alleline.

13 years, 11 months

New mailing list for Android Audio Developers

by Olivier Guilyardi

Hi everyone! I am glad to announce the creation of the andraudio mailing list, dedicated to audio development on Android, at: andraudio(a)music.columbia.edu More info and subscribing: http://music.columbia.edu/mailman/listinfo/andraudio This list is meant to be a place to discuss about audio development, in the context of music and sound applications, but also games and other apps which use audio on Android. Discussions and questions about both Java and native APIs are welcome. In addition to application-level topics, we are interested in discussing about Android audio system internals, for educational purposes, as well as finding new ways to work with sound on Android. So please come and join us if audio development on Android interests you. -- Olivier

13 years, 11 months

[LAA] [ANN] guitarix released gx_head

by hermann

I'm happy to announce the first public release of gx_head. gx_head is a simple guitar mono tube amplifier simulation based on the work we have done in the guitarix project. gx_head provide 3 tube models (12AX7, 12AU7, 6V6) and 8 different tonestack models(Bassman, Twin Reverb, Princeton, JCM-800, JCM-2000, M-Lead, M2199, AC30), so you can simply create the amp-model to your needs. gx_head comes with a bunch of in-build effects, like distortion, crybaby, autowah, phaser, flanger, echo, delay, . . . The effects could ordered in two Racks, on for the mono effects, witch could be load for pre or post processing, and one for the stereo effects, witch could only used in post processing. Effects are loadable over the menu, a pop-up menu in the racks, or a plugin bar. Settings could saved/load as presets. gx_head comes with some factory settings provided by guitarix/gx_head friend "funkmuscle", thanks therefore. All UI controllers could connected with jack midi via MIDI learn with your external MIDI controllers. gx_head is ready for language support via gettext() and comes thanks to Pablo Fernández with a Spanish translation. The style file gx2 is contributed by zettberlin, thanks Hartmut some features in short: * 8 tonestack models * 3 tube models * cabinet impulse response module * bass boster * easy Impulse Response file support via zita-convolver * on the fly IR-file resampling via zita-resampler * Oscilloscope and tuner * multi band distortion model * scalable EQ * phaser, flanger, stereo delay, stereo echo, * overdrive, compressor, freeverb, reverb, * chorus, moog filter, low/high pass filter, . . * MIDI learn * Patch Info widget * Preset File Load/Export option * factory settings * language support * shining User Interface via GTK/gtkmm * . . . . have fun _________________________________________________________________________ gx_head is licensed under the GPL. screenshots: http://sourceforge.net/apps/wordpress/guitarix/ direct download: http://sourceforge.net/projects/guitarix/files/gx_head/gx_head-0.12.0.tar.b… download: http://sourceforge.net/projects/guitarix/ please report bugs and suggestions in our forum here: http://sourceforge.net/apps/phpbb/guitarix/ ________________________________________________________________________ For extra Impulse Responses, gx_head uses the zita-convolver library, and, for resampling we use zita-resampler, both written by Fons Adriaensen. http://www.kokkinizita.net/linuxaudio/index.html We use the marvellous faust compiler to build the amp and effects and will say thanks to : Julius Smith http://ccrma.stanford.edu/realsimple/faust/ : Albert Graef http://q-lang.sourceforge.net/examples.html#Faust : Yann Orlary http://faust.grame.fr/ ________________________________________________________________________ For faust users : All used Faust dsp files are included in /gx_head/src/faust, the resulting .cc files are in /gx_head/src/faust-cc The tools we use to convert (post-processing and plot) the resulting faust cpp files to the needed include format, stay in the /gx_head/tools directory. ________________________________________________________________________ regards guitarix development team

13 years, 11 months

the most kickass conference presentation i've ever seen...

by Jörn Nettingsmeier

from 27c3 :it's short, sweet, spectacular, and does away with the "sorry my laptop doesn't work with the projector" dilemma :-D http://www.youtube.com/watch?v=yEG68O6jpjo&feature=player_embedded

13 years, 11 months

interview with Dave Smith

by Dave Phillips

Greetings, http://www.kvraudio.com/interviews/interview_with_dave_smith Not very deep, but enjoyable. "Avoid Kansas". Great advice. :) Best, dp

13 years, 11 months

ALSA multi plugin and JACK xrun callbacks

by Lee Azzarello

Hello, I'm looking for some advice for an interesting symptom of putting my M-Audio Fast Track Pro USB sound card into ALSA multi mode. This sound card has four physical outputs which are mapped to two 2 channel ALSA streams rather than one four channel stream. I used the ALSA multi plugin to combine these two streams into a single pcm device so JACK can interface with all four outputs. It is working nicely. Despite no perceptible problems in sound quality or latency, jackd is printing hundreds of XRUN callback warnings to the message console each second! I can operate the system perfectly fine, run multiple applications, connect them to the four virtual outputs with no audible timing issues. What is the meaning of this many XRUN callbacks per second? What kind of performance will this impact if not sound playback? Thanks for your help, Lee Azzarello

13 years, 11 months

Re: [LAD] [LAU] [ANN] IR: LV2 Convolution Reverb

by Tom Szilagyi

On 13 January 2011 21:57, Darrin Thompson <darrinth(a)gmail.com> wrote: > > Dumb n00b question: > To use a convolution reverb one needs a recording of an impulse response > right? If I found a random one on the internet would it tend to work ok in > any reverb or do I need one made especially for the reverb implementation > I'm using? Technically, an impulse response is just an ordinary soundfile. Of course it has a certain soundfile format, sample format, channel count and samplerate, but if these are compatible with the convolution reverb you're loading it into (you can successfully load it into the plugin) then yes, it should generally work. Of course there are proprietary convolution reverbs that are bundled with impulse responses in a proprietary format, meaning that these impulses are not plain soundfiles, but are in some proprietary (and secret) binary format. Naturally, you cannot use those (and I guess if you could somehow reverse engineer the impulses into an "open" soundfile format, which would technically allow you to use the impulses in an open source plugin, the EULA of that plugin's license would have a word about it). Tom

13 years, 11 months

Linux Audio Conference 2011: Paper submission deadline extended

by Frank Neumann

Dear all, for the Linux Audio Conference 2011(*) in Maynooth, Ireland, we have extended the deadline for paper submissions to February 20th, 2011. So, if you have considered handing in a paper but couldn't make up your mind yet, here is your chance to become active! Never forget that this conference lives through the people participating in it. The deadline for music submissions has been set to the same date. Notification of acceptance of submitted papers has been aligned slightly as well, and will be sent out on March 15th, 2011. (*) http://lac.linuxaudio.org/2011 Please spread this information to anyone who might be interested. Direct any questions through email to lac(a)linuxaudio.org. Thanks, Frank

13 years, 11 months

pd-l2ork 20110109 snapshot now available

by Ivica Ico Bukvic

Please pardon cross-posting. Changelog: *fixed major CPU hit due to a bug in Cord Inspector implementation. Now the CPU usage is back to what it is in pd-extended. *further performance optimizations to the Cord Inspector. *improved edit mode detection and fixed edit menu activation accordingly. Latest snapshot is available from the usual place: http://l2ork.music.vt.edu/main/?page_id=56 Complete changelog since 11/25/2010 is available here: http://l2ork.music.vt.edu/data/pd/Changelog Best wishes, Ico

13 years, 11 months

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Linux-audio-dev January 2011