Linux-audio-dev January 2012

linux-audio-dev@lists.linuxaudio.org

57 participants
47 discussions

by Dave Phillips

Greetings, I need to know how many members are signed up for LAU and LAD mail lists. Can someone point me to that information ? Best, dp

12 years, 3 months

Ambisonic Effect processing

by Harry van Haaren

Hi everyone, I'm currently thinking about how to process B-format ambisonic signals. For basic compression, gating, expanding, limiting etc things are relatively simple: process all 4 of the W,X,Y and Z signals. But what bout effects like Reverb: Should that effect only be applied to the W signal? This will change the signal's direction due to the unrelated-ness between the signals. But appling reverb to the directional components will smear any sudden changes in location, or am I missing something here? I'm applying most effects in mono before doing the B-format encode, perhaps all effects like reverb should be placed before that encoding? Open to theory, experience, guesstimates etc :) -Harry

12 years, 3 months

[ANN] Qtractor 0.5.3 - The Delta Whisky natural cask strength!

by Rui Nuno Capela

TYOQA is officially over. Qtractor 0.5.3 (delta whisky) drops from angels share! nuff said :) Impromptu release highlights: * Clip drag-and-move stepping with keyboard arrow-keys (FIX) * Plugin parameter automation GUI feedback (FIX) * LV2 plugin Qt4 GUI support (FIX) * Clip/Split on current play-head location (FIX) Slaintheva! Website: http://qtractor.sourceforge.net Project page: http://sourceforge.net/projects/qtractor Downloads: - source tarball: http://downloads.sourceforge.net/qtractor/qtractor-0.5.3.tar.gz - source package (openSUSE 12.1): http://downloads.sourceforge.net/qtractor/qtractor-0.5.3-2.rncbc.suse121.sr… - binary packages (openSUSE 12.1): http://downloads.sourceforge.net/qtractor/qtractor-0.5.3-2.rncbc.suse121.i5… http://downloads.sourceforge.net/qtractor/qtractor-0.5.3-2.rncbc.suse121.x8… - once upon the time, eons ago: user manual: http://downloads.sourceforge.net/qtractor/qtractor-0.3.0-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: - 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). Enjoy && Happy New Year! -- rncbc aka Rui Nuno Capela rncbc(a)rncbc.org

12 years, 3 months

FOSDEM 2012

by Nils

Hello lists, DISCLAIMER: I am not affiliated with FOSDEM. who is going to attend the FOSDEM Open Source Developers meeting in Brussels(Belgium) on 4./5. February? http://fosdem.org/2012/ There is no registration or fee (but you can donate). Since the LAC is in the USA this year maybe not many Europeans have the money to travel there, this could be an opportunity to meet anyway. I think I will go, somebody announced an inofficial Music Notation Meeting on the Lilypond mailing list. Nils

12 years, 3 months

scheduled server downtime - 10/Jan/12 - linuxaudio.org

by Robin Gareus

Hi all, As you may or may not have noticed, linuxaudio.org was rebooted today 15:06 UTC. The server now features shiny (faster) new virtual HDDs (with backups and everything..). Sponsored by the Virginia Tech Department of Music and DISIS. Cheer a loud "Hip Hip,..." to Ico, who made it possible in the first place and send Kudos to Brian Maloney from the vt.edu tech dept for outstanding excellent GNU/Linux support! All systems go. robin

12 years, 3 months

Job opening at HoerTech, Oldenburg, Germany

by Giso Grimm

Dear List, I am forwarding this open position, since people on this list might be interested. Giso -------------------- The Center of Competence for Hearing Aid System Technology – HoerTech gGmbH – is happy to announce a full-time job opening to expand its research and development team at the earliest possible date. HoerTech is a leading non-profit research institute in the field of audiological and acoustical developments related to hearing systems. For a national research project, we are seeking a qualified and motivated RESEARCH ASSOCIATE (f/m) with established experience in scientific research in either audio signal processing, physics, communications engineering, or similar. The position will be concerned with the further development of a software platform for hearing aid algorithms ("Master Hearing Aid") and the development of novel hearing aid algorithms. Another focus can be the co-development of auditory models for perceptual speech and audio quality estimation. The opportunity to undertake a doctoral research at the Oldenburg University is provided. For details please visit www.hoertech.de/cgi-bin/wPermission.cgi?file=/web_en/hoertech/job_1.shtml

12 years, 3 months

ganv build error: error: ISO C++ forbids declaration of ‘cairo_region_t’ with no type

by Diego Simak

Hi all, I don't really know if this email should be directed to LAD, or LAU or just Drobilla devs... anyway: I'm trying to build Ingen from SVN using all LV2 files (packages, extensions, tools, etc.) from SVN as well. During ganv build stage I'm getting this error: /home/diego/Desktop/ingen/drobilla-lad/ganv/ganv/canvas-base.h:259:2: error: ISO C++ forbids declaration of ‘cairo_region_t’ with no type /home/diego/Desktop/ingen/drobilla-lad/ganv/ganv/canvas-base.h:259:16: error: expected ‘;’ before ‘*’ token .....and the build just fails. I know that there's a ticket 792 [1] opened about this issue but I would like to know if there is some simple solution to solve this error. I'm on Ubuntu 10.04 with libcairo2-1.8.10. Thank you very much. Diego [1]: http://dev.drobilla.net/ticket/792

12 years, 3 months

scheduled server downtime - 10/Jan/12 - linuxaudio.org

by Robin Gareus

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi *, linuxaudio.org will be offline for scheduled server maintenance on Tue, 10 Jan 2012 14:00 UTC for about 2-3 hours. All online services will be unavailable during that time. If all goes well (new disks, fsck, kernel-update,..) the actual downtime will be much shorter.. thanks for bearing with us, robin -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iEYEARECAAYFAk8IZxUACgkQeVUk8U+VK0KJXgCgjbxcqXk4U9tzzBjWDbY/F7B9 RkQAoLHYKxinF9fWLkOyzJMyuRqqSKIP =U5Uj -----END PGP SIGNATURE-----

12 years, 3 months

[OT] Statistics about usage of GUI toolkits

by Julien Claassen

Hello everyone! Does anyone of you know about a good resource for statistical info about used graphical toolkits? So which toolkits are used the most. Including all platforms would be nice, but info on Linux-based toolkits would be a good start. Thanks and kind regards Julien =-=-=-=-=-=-=-=-=-=-=-=- Such Is Life: Very Intensely Adorable; Free And Jubilating Amazement Revels, Dancing On - FLOWERS! ====== Find my music at ====== http://juliencoder.de/nama/music.html ..................................... "If you live to be 100, I hope I live to be 100 minus 1 day, so I never have to live without you." (Winnie the Pooh)

12 years, 3 months

JACK Timemachine patch that allows OSC port to be specified at start up

by Tristan Strange

Hi all, I've been trying to get the attached patch to steve at plugin dot org dot uk.... unfortunately his email address has been unavailable for 5 days now. The attached patch allows the OSC port a timemachine instance is listening on to be specified at startup with a -o flag. Can anyone else commit this to the project's git repository whilst he's unavailable (providing it's up to scratch of course!) or forward this on to Steve for me please? This is the first patch I'll have submitted to a well used open source project so I'm super keen to see it in timemachines code base. Many thanks, Tristan

12 years, 3 months

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Linux-audio-dev January 2012