Linux-audio-dev

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7513 discussions

by Fons Adriaensen

Hello all, I'm seeing a strange problem with the WFS system at the Casa del Suono. It consists of a number of Jack apps managed by a python program which in turn takes its input from 'player' like remote control apps running on two EEEs used by the musem staff. Some of the port connections are fixed, some are made or unmade by the python program according to the item chosen on the player interface. Twice now, after a few weeks of 'uptime', some of the fixed connections have disappeared. Everything else remains normal, the whole system still functions (apart from some missing audio signals) and restoring the connections manually is all that is required. No errors or whatever in any of the log files. The connections that are lost are always between the same two apps, both of which only have fixed connections. In other words there is nothing in the python control program that ever touches any ports of those two apps. So I'm wondering what's happening here. Anyone else running jack1 uninterrupted for months noticed anything strange ? Ciao, -- FA A world of exhaustive, reliable metadata would be an utopia. It's also a pipe-dream, founded on self-delusion, nerd hubris and hysterically inflated market opportunities. (Cory Doctorow)

12 years, 8 months

[ANN] Qtractor 0.5.7 - The Hotel Sierra is open, come on in!

by Rui Nuno Capela

Greetings, Yeah. Not much to tell about the times I'm afraid. But let me wish you all a merry and great new year, following the one which end is nigh. Just in case you wanna party, feel welcome, by all means: Qtractor 0.5.7 (hotel sierra) is open, come on in! Release highlights: * LV2 Options and Buf-size support (NEW) * Location markers/bar (NEW) * MIDI editor line-drawing (NEW) * Punch & loop recording compatibility (FIX) * Untangled LV2 UI parameter communication (FIX) * Dropped libSLV2 support, honoring libLILV for good (FIX) Website: http://qtractor.sourceforge.net Project page: http://sourceforge.net/projects/qtractor Downloads: - source tarball: http://downloads.sourceforge.net/qtractor/qtractor-0.5.7.tar.gz - source package (openSUSE 12.2): http://downloads.sourceforge.net/qtractor/qtractor-0.5.7-4.rncbc.suse122.sr… - binary packages (openSUSE 12.2): http://downloads.sourceforge.net/qtractor/qtractor-0.5.7-4.rncbc.suse122.i5… http://downloads.sourceforge.net/qtractor/qtractor-0.5.7-4.rncbc.suse122.x8… - quick start guide & user manual: http://downloads.sourceforge.net/qtractor/qtractor-0.5.x-user-manual.pdf Weblog (upstream support): http://www.rncbc.org License: Qtractor is free, open-source software, distributed under the terms of the GNU General Public License (GPL) version 2 or later. Change-log: - Loop and punch in/out ranges may now get set simultaneously, may even overlap each other. However, punch in/out range recording will always prevail over any loop recording takes. - LV2 Worker/Schedule now supporting multi-instance vs. single-UI scenarios. - LV2 Options and Buf-size extension support added. - Fixed an off-by-one-tick bug on MIDI file input which was leaving spurious zero-length runt notes at the end of a MIDI clip, if a note-on coincides with the ending/split point (on ticket issued by Jonathan H. Pickard, thanks). - Good old SLV2 library support for LV2 plug-ins (libslv2) is now irrevocably deprecated, or better said, completely wiped-out from the LV2 host code, now considered extinct. - LV2 UI parameter updates are now asynchronously detached from the source GUI widget thread, in attempt to improve cross-GUI-toolkit responsiveness, specially focused on LV2 plugins with a GTK based UI (eg. amsynth, triceratops, etc.). - Make sure LV2 UI parameters (input control ports) get updated when loading a genuine LV2 state preset. - Improved the (custom) tempo spin-box widget signal(ing) processing and dispatching. - Show proper pointing cursor and location tool-tip while dragging any of the time ruler markers (including latest location markers/bar). - On saving as an archive/zip session file (suffix .qtz) include only those files that are actually referenced by live clips arrangement. - Ongoing integration of location markers infrastructure (time-scale and MIDI-file support). - Free-hand/linear retouching of event values, while on the MIDI clip editor's view pane below the main piano-roll (eg. note velocities), is now possible provided the target events are selected, otherwise the usual painting edit sub-mode applies (cf. menu Edit/Select Mode/Edit Draw). - The MIDI clip editor now senses which target view pane has focus for general selection commands (cf. Edit/Select/None, All, Invert, Range) whether the main piano-roll or the event value (velocities) view. - Mouse middle-button clicking is back in business on main track-view and on MIDI clip editor views (piano-roll) as an immediate play-head (re)positioning command or merge/reset the edit-head/tail cursors if Shift/Ctrl keyboard modifiers are pressed. - Formerly protected, class qtractorClip::FadeFunctor is now public in an shot-in-the-dark attempt to fix clang builds (as reported by Jekyll Wu, thanks). - Override all sub-classed widgets mouse-pointer event handlers to be isolated from base widget style and/or window management. Enjoy!-- rncbc aka Rui Nuno Capela rncbc(a)rncbc.org

12 years, 8 months

Writing a music notation editor and need some help with MIDI, Jack, and FluidSynth

by M Donalies

I'm using Qt and C++ under Linux with ALSA. Ideally, what I'd like is a simple example like alsa's midiseq.c or a MIDI metronome hooked up to jack so that it outputs to fluidsynth. Then I could see the whole system in action. Is there such an example available? I'm having some trouble understanding how all the pieces fit together. I have a few other questions that aren't directly related: The first has to do with manipulating midi ctlr events to simulate various musical techniques like legato and palm muting. What I've tried so far doesn't sound very good. I need legato in polyphonic mode, so just overlapping notes doesn't work. Sending a legato ctlr message doesn't seem to do anything. I'm not looking for anything real fancy, just something to make trills & slurs sound reasonable. I think all I want to do is to skip the attack portion of the sample. For palm muting, I've shortened the note duration, but I'd like to darken or thicken the timbre. Is there any simple way to do this? Second, I've lifted a lot of glyphs from the Lilypond font and placed them in my own font and I was wondering how and where to credit creators of these glyphs. I've added glyphs of my own (bends, vibrato, etc.) and doctored some others, but many are just cut, pasted, & resized from Lilypond. Before I release any code, I'd like to get the credits properly documented. Thanks, all. -- 7:8

12 years, 8 months

Re: [LAD] [LAA] Suil 0.6.8

by hermann meyer

Am 23.12.2012 03:29, schrieb David Robillard: > Suil 0.6.6 is out. Suil is a lightweight C library for loading and > wrapping LV2 plugin UIs. Suil transparently presents UIs written in > any toolkit as the desired widget type of host programs, so hosts do > not have to depend on foreign toolkits. > > This minor release fixes a couple of potential crashes. > > Suil home: http://drobilla.net/software/suil/ > Download: http://download.drobilla.net/suil-0.6.6.tar.bz2 > > Changes: > * Fix crash in x11_in_gtk2 when event_filter fires before widget > is realized > * Use libgtk-x11-2.0.so.0 (with .0 suffix) by default which is > available on systems without the dev package > * Update to waf 1.7.8 and autowaf r90 (install docs to versioned > directory) > > Also, a note about the previous release: the Gtk in Qt fixes are thanks > to Devin Anderson; apologies for this attribution oversight in the hasty > release and corresponding announcement. > > Enjoy, > > -dr > Thanks for your work on this, suil makes the live for a plug-in-developer a bit more easy, and gives the chance to keep the knowing toolkit for create a plug-in UI. I just wonder a bit, you announce Suil 0.6.8, gives the download link for Suil 0.6.6, and when I have a look at your project page I found Suil 0.6.10 :-) regards hermann

12 years, 8 months

Lv2 Toolkit v1.0.3 (lvtk) Released

by Michael Fisher

Hello LAD, LVTK v1.0.3 is out. For those who aren't already aware, LVTK is the successor to lv2-c++-tools. Info and source download: http://lvtoolkit.org/releases/lvtk-v1-0-3 Important Fixes: - Fixed UI compiler errors with -Wl,nodelete. - Accurate MIDI triggering in the Synth base class - Fixed GtkUI mixin bug that was causing crashes when a plugin is unloaded while UI is still open. A complete list of changes is in the Git history.

12 years, 9 months

[ANN] Vee One Suite 0.3.0 - The Third Coming

by Rui Nuno Capela

12 years, 9 months

warning: seedy journal possibly targetting LAC authors

by Jörn Nettingsmeier

hi everybody! i just received a personalized spam mail from a very seedy publishing company which apparently has harvested the linux audio conference backlogs. so here's a friendly warning since this might happen to others who have contributed to LACs in the past. this company doesn't check out at all as a relevant publisher, and a number of people have reported that their business model is to bait and hook scholars desperate for publications and then milking them for publication fees. they will also ask for a transfer of copyright. needless to say, david publishing's journals are practically unheard of in the world of serious research, and being in one is very likely to hinder a career rather than foster it. meanwhile, a happy holiday season and may santa bring good publishing opportunities to all scholars who have been well-behaved during the year! jörn -------- Original Message -------- Subject: Call for Papers or Books from Journal of Literature and Art Studies (ISSN 2159-5836) Date: Fri, 21 Dec 2012 13:58:59 +0800 From: literature.art <literature.art(a)davidpublishing.org> To: nettings <nettings(a)stackingdwarves.net> From Knowledge to Wisdom *Journal of Literature and Art Studies, USA* International Standard Serial Number: ISSN2159-5836 (Print),ISSN 2159-5844 (Online)** *Call for Papers and Books* ** Dear Jörn NETTINGSMEIER, This is a journal entitled */Journal of Literature and Art Studies /(ISSN 2159-5836)*published across the United States by David Publishing Company, EL MONTE, CA, USA.We are glad to know you have submitted a paper named:*_Generalpurpose Ambisonic playback systems for electroacoustic concerts - a practical approach _*at Linux Audio Conference 2010.Weare very interested in your research. If the paper mentioned has not been published in other journals and you have the idea of making our journal as a vehicle for your research interests,please send us the English electronic version of your paper in MS word format. And all your original and unpublished papers are welcome. Hope to keep in touch with you by email. If you have other original and unpublished papers or books at hand which have not been published yet, please feel free to send them to us too. As an American academic publishing group, we wish to become your friends if necessary. At present, we also want to invite some people to be our reviewers or become our editorial board members. If you are interested in our journal, Please send your CV to us too. Expect to get your reply soon. *Description* ** */Journal of Literature and Art Studies /*is an international academic journal (print and online), published monthly by David Publishing Company, USA, which was founded in 2001, and is striving to provide the best platform for artists and scholars worldwide to exchange their latest findings and results. Our journal is an English version and your contribution to our journal would be very much welcome! *Current columns involve:* ** Literature studies, art theory, culture and history of arts, appreciation of arts, etc.. *Some renowned databases our journal can be retrieved:* **** */Journal of Literature and Art Studies/*is to be indexed in following databases: ★ Database of EBSCO, Massachusetts, USA (Humanities Abstracts (H.W. Wilson)) ★ LLBA Database of CSA ★ Universe Digital Library S/B, Proquest ★ Proquest, USA ★ Chinese Database of CEPS, American Federal Computer Library center (OCLC), USA ★ Chinese Scientific Journals Database, VIP Corporation, Chongqing, P.R. China ★ Ulrich’s Periodicals Direcory ★ Summon Serials Solutions *Information for author(s)* ** 1. The manuscript should be original, and has not been published previously. Please do not submit material that is currently being considered by another journal. 2. Manuscripts may be 3000-8000 words or longer if approved by the editor, including an abstract, texts, tables, footnotes, appendixes, and references. The title should not exceed 15 words, and abstract should not exceed 400 words. 3-8 keywords or key phrases are required. 3. The manuscript should be in MS Word format, submitted as an email attachment to our email address. 4. Author(s) of the articles being accepted are required to sign up the Transfer of Copyright Agreement form. 5. The author(s) will receive 2 copies of the issue of our journal containing his/her (their) article(s). 6. It is not our policy to pay authors. *Submission**of manuscript* ** All manuscripts submitted will be considered for publication. Please visit our website at _www.davidpublishing.com_ for our automatic paper submission systems or send an email attachment to: art.literature(a)yahoo.com<mailto:art.literature%20@yahoo.com>, _literature.art_(a)davidpublishing.org<mailto:philostudy@gmail.com>. Best Regards! Wayne Editorial Office Journal of Literature and Art Studies (ISSN 2159-5836) David Publishing Company 9460 TELSTAR AVE SUITE 5,EL MONTE,CA 91713,USA Website: http://www.davidpublishing.com E-mail: literature.art(a)davidpublishing.org <mailto:literature.art@davidpublishing.org> Tel: 1-323-9847526, 1-323-4101082; Fax: 1-323-9847374; 1-323-9080457

12 years, 9 months

Re: [LAD] avw.lv2 0.0.9

by David Robillard

On Mon, 2012-12-17 at 12:51 +0000, Aurélien Leblond wrote: > [...] > I just released a new version of the avw.lv2 plugin suit: [...] > - Starting not to use Gtk Builder (only LFO GUI) Out of curiosity, were there any technical problems behind this, or just consistency/preference/whatever? -dr

12 years, 9 months

Re: [LAD] building the new Guitarix LV2 Amp

by David Robillard

Looks like you are building against a static library. Since you are building a shared module, pedantically you can't do this, in practice you at least need to be sure all code is built with -fPIC. Presumably the static library mentioned is not, which is your problem. I am not familiar with libgxmm or the guitarix LV2 work specifically, sorry, no concrete suggestions. Gianfranco Ceccolini <franconassis(a)gmail.com> wrote: >_______________________________________________ >Linux-audio-dev mailing list >Linux-audio-dev(a)lists.linuxaudio.org >http://lists.linuxaudio.org/listinfo/linux-audio-dev

12 years, 9 months

building the new Guitarix LV2 Amp

by Gianfranco Ceccolini

Hello all I've tried building the new LV2 Amp from guitarix and the following error is ocurring /usr/bin/ld: default/libgxwmm/gxwmm/libgxwmm.a(controlparameter_83.o): relocation R_X86_64_32 against `_ZTTN3Gxw16ControlParameterE' can not be used when making a shared object; recompile with -fPIC default/libgxwmm/gxwmm/libgxwmm.a: could not read symbols: Bad value I've already installed the last LV2 from SVN. Using Debian Testing in my box. Any ideas on waht I'm doing wrong? Thanks for all Gian -- Antes de imprimir pense em sua responsabilidade e compromisso com o MEIO AMBIENTE!

12 years, 9 months

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Linux-audio-dev