Linux-audio-user November 2016

linux-audio-user@lists.linuxaudio.org

68 participants
75 discussions

by DJ Penton

WTF? I have tried repeatedly to unsubscribe from this list. It just doesn't work. I also sent a message to the listadmin, but nothing ever happens. What the fuck is it with this list?

7 years, 4 months

[ANN] Qtractor 0.8.0 - The Snobbiest Graviton is out!

by Rui Nuno Capela

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Hello there! This might come as an end to a long cycle indeed, really approaching a final and last milestone, whatever... But one thing is for sure: besides the prodigal but (pun, somewhat, not intended:)), this wraps up the so called Qstuff* Fall'16 release business deal [7][8]. Qtractor 0.8.0 (snobbiest graviton) is out! And the release highlights are: * Auto-backward location marker (NEW) * Clip selection edge adjustment (NEW) * Improved audio clip zoom-in resolution (NEW) * Clip selection resilience (FIX) * MIDI (N)RPN running status (FIX) And the band plays on... Maybe you can further decrypt the fresh juice from the change-log below -- or rather never mind though and go for the grabs already ;). Qtractor [1] is an audio/MIDI multi-track sequencer application written in C++ with the Qt framework [2]. Target platform is Linux, where the Jack Audio Connection Kit (JACK [3]) for audio and the Advanced Linux Sound Architecture (ALSA [4]) for MIDI are the main infrastructures to evolve as a fairly-featured Linux desktop audio workstation GUI, specially dedicated to the personal home-studio. Website: http://qtractor.sourceforge.net Project page: http://sourceforge.net/projects/qtractor Downloads: http://sourceforge.net/projects/qtractor/files - - source tarball: http://download.sf.net/qtractor/qtractor-0.8.0.tar.gz - - source package: http://download.sf.net/qtractor/qtractor-0.8.0-28.rncbc.suse.src.rpm - - binary packages: http://download.sf.net/qtractor/qtractor-0.8.0-28.rncbc.suse.i586.rpm http://download.sf.net/qtractor/qtractor-0.8.0-28.rncbc.suse.x86_84.rp m Git repos: http://git.code.sf.net/p/qtractor/code https://github.com/rncbc/qtractor.git https://gitlab.com/rncbc/qtractor.git https://bitbucket.org/rncbc/qtractor.git Wiki (on-going help wanted!): http://sourceforge.net/p/qtractor/wiki/ License: Qtractor [1] is free, open-source Linux Audio [5] software, distributed under the terms of the GNU General Public License (GPL [6]) version 2 or later. Change-log: - - 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 (suggested patch by Stefan Westerfeld, while on SpectMorph, thanks). References: [1] Qtractor - An audio/MIDI multi-track sequencer http://qtractor.sourceforge.net [2] Qt framework, C++ class library and tools for cross-platform application and UI development http://qt.io/ [3] JACK Audio Connection Kit http://jackaudio.org [4] ALSA, Advanced Linux Sound Architecture http://www.alsa-project.org/ [5] Linux Audio consortium of libre software for audio-related work http://linuxaudio.org [6] GPL - GNU General Public License http://www.gnu.org/copyleft/gpl.html [7] The QStuff* Fall'16 Release http://www.rncbc.org/drupal/node/1773 [8] Vee One Suite 0.8.0 - A Fall'16 Release http://www.rncbc.org/drupal/node/1775 See also: http://www.rncbc.org/drupal/node/1777 Enjoy && Keep the fun. - -- rncbc aka Rui Nuno Capela -----BEGIN PGP SIGNATURE----- iQEcBAEBCAAGBQJYMxyvAAoJEEnqU1AwGtTIPy4H/3bqzmC1EYRjrw3jLfwet6/A qsB+KpbW3F8sbWCG1UbsNHbQB8XvGF1D9M8GRpKHFHqkXq2fUmMpGrCaXU8tJpTK LMLoafblwWZqohusxOp3DfO9T65SmnR3WcnyqSQXZNEAfOAVSmZqbSwCl1+03Tik 8cTFM3LSCyX4yZ5YRSpF0lOL8VJBwhYVauFS3HOq32PSL/oTgBm8ORoZCsqc84KA VEpqcuQb1+uwvohHD3+NOQ2scwcEfLTg//b8E/iWY+LtyNphXTD/SbO1TOO4soOd O3ksGU6V63Vgd6R72a5liDmZ2uKMNUU1R+/0ucPsjbMAcbmZtdft12Dehr6KJhA= =szMp -----END PGP SIGNATURE-----

7 years, 5 months

bit-transparent playback/recoding over AES using an RME 9632 card

by Tino Mettler

Hi, I try to get bit-transparent playback/recording of a stereo stream with a RME 9632 card. My test setup the card clocked at 48 kHz and the AES input and output looped. When I tried to use pure alsa, I recorded 10 channels to get channels 9 and 10 which is the AES input (I wasn't able to find a way to record only channels 9 and 10). However, I'm not able to play back anything during the recording. I get the error message "set_params:1361: Unable to install hw params". I also tried jack and started jackd this way: $ jackd -R -d alsa -d hw:DSP -z none -M -H I was able to play back a square sample and record channels 9 and 10 using jack_rec. However, the result looks like it went though bad AD/DA conversion: jumpy edges and the linear parts unclean, too. I'll try to find out if the playback or recording part is the culprit. However, I'd like to get some comments if bit-transparent playback/recording can work at all with my setup. If it does, I'd appreciate to get some hints how to achieve this. Regards, Tino

7 years, 5 months

XJADEO fullscreen in vertical span mode?

by oliver irschitz

hello together, I have an issue with xjadeo video monitor. its all running fine, but when I put it on fullscreen on a windows system with 3 screens connected (vertical span mode) the video just goes fullscreen on the primary screen and not over all 3 screens as expected. but with the vlc player it just works fine and plays the panoramic video over all screens perfectly. does anybody know if there is an option to span the fullscreen picture of the xjadeo video player over the 3 screens? I would appreciate any input very much, as this is a showstopper for our project and I cannot find any information online. thanks in advance for the help, bets regards -- Oliver Irschitz MediaArchitect& Founder peyotecross design GmbH oliver.irschitz(a)peyote.cc <mailto:oliver.irschitz@peyote.cc> fon: +43-699-13846266 http://www.peyote.cc http://www.youtube.com/user/peyotedesign

7 years, 5 months

Seeking WAV file

by Erik de Castro Lopo

Hi all, I'm working on fixing this issue: https://github.com/erikd/libsndfile/issues/190 in libsndfile. In order to figure out what's what, I need a WAV file loop, with an embeded ACID chunks, and the loop needs to be in a time signature *other* than 4/4. If you think you may have a loop that would be useful for me, you can verify it using the sndfile-info program that ships with libsndfile (its in the sndfile-programs package in Debian/Ubuntu). Running on candidate WAV files produces something like this: $ sndfile-info file.wav ======================================== File : file.wav Length : 146982 RIFF : 146974 WAVE fmt : 16 Format : 0x1 => WAVE_FORMAT_PCM Channels : 1 Sample Rate : 44100 Block Align : 2 Bit Width : 16 Bytes/sec : 88200 data : 145408 LIST : 110 INFO ICOP : Paul Bennet, 1999 ICRD : 1998-09-21 IENG : Paul Bennet ISFT : Sound Forge 4.0;Sound Forge 4.5 acid : 24 Flags : 0x0002 (Loop,RootNoteValid,StretchOff,RAMBased,??Off) Root note : 0x34 ???? : 0xFFFF8000 ???? : 0.000000 Beats : 4 Meter : 4/4 Tempo : 145.576584 strc : 1372 End What I need is a file with "Meter" of something other than 4/4. If you have one, please email the sndfile-info output to me at erikd at mega-nerd.com. I might also get you to email me the file if it looks like it might help. Cheers, Erik ---------------------------------------- Sample Rate : 44100 Frames : 72704 Channels : 1 Format : 0x00010002 Sections : 0 Seekable : FALSE Duration : 00:00:01.649 Signal Max : 32767 (-0.00 dB) -- ---------------------------------------------------------------------- Erik de Castro Lopo http://www.mega-nerd.com/

7 years, 5 months

[ANN] Vee One Suite 0.8.0 - A Fall'16 release

by Rui Nuno Capela

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Hello again! The 'Vee One Suite' aka. the 'gang of three' old-school homebrew software instruments, respectively synthv1 [1], as a polyphonic subtractive synthesizer, samplv1 [2], a polyphonic sampler synthesizer and drumkv1 [3] as yet another drum-kit sampler, are now into their twelfth beta, joining "The Qstuff* Fall'16 release" stream [10]. As before, all still available in dual form: - - a pure stand-alone JACK [4] client with JACK-session, NSM [5] (Non Session management) and both JACK MIDI and ALSA [6] MIDI input support; - - a LV2 [7] instrument plug-in. The common change-log for this joint-release: - - LV2_STATE__StateChanged is now transmitted as a regular atom notification event, as far as to give some careful hosts enough slack to raise a dirty flag. - - Fixed input MIDI RPN/NRPN running status processing. - - Once forgotten, loop on/off setting is now consequential (samplv1 [2] only). - - Almost complete overhaul on the configure script command line options, wrt. installation directories specification, eg. --prefix, - --bindir, --libdir, --datadir and --mandir. So here they go, thrice again! **synthv1 - an old-school polyphonic synthesizer [1]** synthv1 0.8.0 (fall'16) is out! synthv1 is an old-school all-digital 4-oscillator subtractive polyphonic synthesizer with stereo fx. LV2 URI: http://synthv1.sourceforge.net/lv2 website: http://synthv1.sourceforge.net downloads: http://sourceforge.net/projects/synthv1/files - source tarball: http://download.sf.net/synthv1/synthv1-0.8.0.tar.gz - source package: http://download.sf.net/synthv1/synthv1-0.8.0-30.rncbc.suse.src.rpm - binary packages (openSUSE Tumbleweed): http://download.sf.net/synthv1/synthv1-0.8.0-30.rncbc.suse.i586.rpm http://download.sf.net/synthv1/synthv1-0.8.0-30.rncbc.suse.x86_84.rp m git repos: http://git.code.sf.net/p/synthv1/code https://github.com/rncbc/synthv1.git https://gitlab.com/rncbc/synthv1.git https://bitbucket.org/rncbc/synthv1.git **samplv1 - an old-school polyphonic sampler [2]** samplv1 0.8.0 (fall'16) is out! samplv1 is an old-school polyphonic sampler synthesizer with stereo fx . LV2 URI: http://samplv1.sourceforge.net/lv2 website: http://samplv1.sourceforge.net downloads: http://sourceforge.net/projects/samplv1/files - source tarball: http://download.sf.net/samplv1/samplv1-0.8.0.tar.gz - source package: http://download.sf.net/samplv1/samplv1-0.8.0-30.rncbc.suse.src.rpm - binary packages (openSUSE Tumbleweed): http://download.sf.net/samplv1/samplv1-0.8.0-30.rncbc.suse.i586.rpm http://download.sf.net/samplv1/samplv1-0.8.0-30.rncbc.suse.x86_84.rp m git repos: http://git.code.sf.net/p/samplv1/code https://github.com/rncbc/samplv1.git https://gitlab.com/rncbc/samplv1.git https://bitbucket.org/rncbc/samplv1.git **drumkv1 - an old-school drum-kit sampler [3]** drumkv1 0.8.0 (fall'16) is out! drumkv1 is an old-school drum-kit sampler synthesizer with stereo fx. LV2 URI: http://drumkv1.sourceforge.net/lv2 website: http://drumkv1.sourceforge.net downloads: http://sourceforge.net/projects/drumkv1/files - source tarball: http://download.sf.net/drumkv1/drumkv1-0.8.0.tar.gz - source package: http://download.sf.net/drumkv1/drumkv1-0.8.0-26.rncbc.suse.src.rpm - binary packages (openSUSE Tumbleweed): http://download.sf.net/drumkv1/drumkv1-0.8.0-26.rncbc.suse.i586.rpm http://download.sf.net/drumkv1/drumkv1-0.8.0-26.rncbc.suse.x86_84.rp m git repos: http://git.code.sf.net/p/drumkv1/code https://github.com/rncbc/drumkv1.git https://gitlab.com/rncbc/drumkv1.git https://bitbucket.org/rncbc/drumkv1.git License: The Vee One Suite are free, open-source Linux Audio [9] software, distributed under the terms of the GNU General Public License (GPL) [8] version 2 or later. References: [1] synthv1 - an old-school polyphonic synthesizer http://synthv1.sourceforge.net/ [2] samplv1 - an old-school polyphonic sampler http://samplv1.sourceforge.net/ [3] drumkv1 - an old-school drum-kit sampler http://drumkv1.sourceforge.net/ [4] JACK Audio Connection Kit http://jackaudio.org/ [5] NSM, Non Session Management http://non.tuxfamily.org/nsm/ [6] ALSA, Advanced Linux Sound Architecture http://www.alsa-project.org/ [7] LV2, Audio Plugin Standard, the extensible successor of LADSPA http://lv2plug.in/ [8] GNU General Public License http://www.gnu.org/copyleft/gpl.html [9] Linux Audio consortium of libre software for audio-related work http://linuxaudio.org [10] The QStuff* Fall'16 Release http://www.rncbc.org/drupal/node/1773 See also: http://www.rncbc.org/drupal/node/1775 Enjoy && keep the fun ;) - -- rncbc aka. Rui Nuno Capela -----BEGIN PGP SIGNATURE----- iQEcBAEBCAAGBQJYLc+iAAoJEEnqU1AwGtTI5rAH/AtuKufN/PPaAoIhIqWfn0r7 RxlnsOh827kPdvk/7s8BinUEiUp66NsS5JJOMI2T1scoRnHEDA8Rx+b6JWWeRNMM AQLRVztluiGLo6yF1rn8wrPvnogIQFrYklrRGwNHRPJ1P4MTdI799KODblRMiihx jjTHzGnIWT9/nAl5O0MsdDeEg1fGkUZXissE2YnUJ4lpzNwpHHFcdh4rUedcRdLA QfyckqfoxJZ70iuTrF4xovpCObywBww8bvXa76+L9vSHrvQkOlis29cGfdyZWdJ3 hEjL2AzTgJMCodq2/JcX2fQy7JINKILtCfmLiUadXjm9lIS1o3M9VEAqNP15wNs= =iCqi -----END PGP SIGNATURE-----

7 years, 5 months

screcord.lv2 release v0.1

by Hermann Meyer

Hi for the shake of easiness I've pushed a release of screcord.lv2 to github. screcord.lv2 is a ultra light LV2 recording plugin, which will save your audio stream to disk. screcord features stemless recording, means it open a new file when max file size of wav file is reached. screcord comes without GUI, but provide a record button, a format selector, and a clipping indicator. screcord use libsndfile http://www.mega-nerd.com/libsndfile/ regards hermann

7 years, 5 months

ANN: competitive research assistantship available at Virginia Tech/ICAT/DISIS

by Ivica Ico Bukvic

Please excuse x-posting: Virginia Tech is seeking graduate student candidates for a competitive Institute for Creativity, Arts, and Technology (ICAT) graduate research assistantship starting with the academic year 2017-8. We are specifically looking for students who are interested in studying in the newfound Human-Centered Design (HCD) transdisciplinary individualized PhD and/or Computer Science's Human-Computer Interaction (HCI). We are also willing to consider Masters level applicants to the CS program with focus on HCI. Additional assistantships may be available through the HCD program. HCD Option Virginia Tech's new individualized Human-Centered Design (HCD) iPhD transdisciplinary degree is closely aligned with the newfound Institute for Creativity, Arts, and Technology (ICAT). iPhD is a degree designed primarily to support individually tailored PhD experiences, allowing students to actively participate in shaping their plan of study. CS HCI Option The graduate program in the Department of Computer Science at Virginia Tech is on its way to becoming one of the top programs in the country. The resources and facilities for research areas such as human-computer interaction, bioinformatics, and high-end computing are state of the art, and the growing list of specialized masters and doctoral degrees in a variety of areas provides opportunities for students to concentrate their research and study on the specific aspects of computer science in which they are most interested. At Virginia Tech, students receive firsthand instruction by award-winning faculty. In the computer science department, that means that graduate students have the opportunity to learn from the professors who have helped to define today's computer industry. The Center for Human-Computer Interaction is a part of ICAT, offering a diverse infrastructure and human expertise for cutting-edge research. The GAship in question seeks candidates with a solid research background, and a strong sense of independence and self-sufficiency. We are particularly seeking students interested in sonification, sound spatialization, and interactive technologies (e.g. mind-body technologies, laptop/mobile ensembles, hyperinstruments, installations, mobile/wearable/physical computing, etc.). Knowledge of Max and Pd/Pd-L2Ork programming environments, C/C++, Java, or equivalent is strongly preferred, as well as skills in other domains (e.g. interactive multimedia, K-12 education, 3D animation, etc.). This is a renewable assistantship with a full tuition waiver and a stipend. To be eligible candidates need to apply, be accepted, and enroll in the new HCD iPhD or the Human-Computer Interaction Computer Science program with primary focus in the computer music domain focusing on one or more of the aforesaid areas of interest. The successful candidate will be given an opportunity to participate in conducting research using the cutting edge 148 speaker system and consequently its innovative spatialization, sonification, and immersion approaches in the new $100M Moss Arts Center and more specifically Institute for Creativity, Arts, and Technology's three-story Cube space and its smaller counterpart, the immersive Perform Studio, as well as the new DISIS facilities, a part of a $600,000 renovation that opened in January 2015. They will also work closely with ICAT faculty and students on a number of collaborative projects. For questions and application information please contact Dr. Ivica Ico Bukvic <ico(a)vt.edu> For more information: ICAT http://www.icat.vt.edu DISIS http://disis.icat.vt.edu L2Ork http://l2ork.icat.vt.edu HCD http://hcd.icat.vt.edu/ Best, -- Ivica Ico Bukvic, D.M.A. Associate Professor Creative Technologies in Music ICAT Senior Fellow DISIS & L2Ork Director Virginia Tech School of Performing Arts – 0141 Blacksburg, VA 24061 (540) 231-6139 ico(a)vt.edu www.performingarts.vt.edu disis.music.vt.edu l2ork.music.vt.edu

7 years, 5 months

JACK Freewheel mode thoughts

by Lorenzo Sutton

Hi all, I was recently thinking about how powerful, yet maybe underestimated, the JCAK freewheel mode [1] is. As far as I know this is used by Ardour, Qtractor and MusE for export/bounce, 'internally'. Call me old school, but I like to use various (lots) of audio software on Linux in a modular way. I have stated many times that, in my humble opinion, modularity plus inter-connectability of applications though JACK is, from a creative point of view, a killer feature. So, coming to the freewheel point. Wouldn't it be great if 'all jack audio' software were freewheel-ready, so that if I activate a switch, all applications enter freewheel mode and when I activate recording in my favourite DAW, connected to some of my favourite (standalone!) synths, connected to my favourite sequencer, everything is recorded 'faster than realtime' in the DAW? Or also: isn't it startling that in the digital era one should 'record' stuff internally in real-time?? What kind of work/burden would becoming freewheel-ready pose on existing applications? I do can see some cases where this just wouldn't work or might not even be desirable: for example Pure Data and similar software which by definition is realtime. Hopefully this can start some (civilized!) debate on the topic and it also includes other topics such as (creative) workflow, etc. Lorenzo. [1] http://www.jackaudio.org/api/group__ServerControl.html#gad65c741a1d1d2fb09e…

7 years, 5 months

New Music: Five of Cups

by Ben Bell

Hi all, Just a quick note to say my new album (Patchwork Cacophony, Five of Cups) was released today. Once again, almost everything was produced on Linux using Ardour and other Open Source software (though there are very few soft synths -- it's mostly olde fashioned drums, guitars, voices and physical keyboards). Same as last time, if anyone mentions Ardour when buying a copy I'll collect up £1 per sale for a donation to Ardour development. In truth with music sales being what they are these days it's unlikely to feed a proper developer caffeine habit for even a week, but it should be able to eclipse my all-time revenue from Spotify ;) The music is prog rock, with a strong emphasis on keyboards and classic-era sort of sounds rather than more metal-influenced which is seeing a bit of a rennaissance these days. You can stream the whole thing for free on Bandcamp: http://patchworkcacophony.bandcamp.com/ Thanks again to everyone in the Linux Audio world, from the ALSA and FFADO guys, obviously Ardour, but also things like Scribus and Gimp. It constantly amazes me how much support there is for producing a thing like this without recourse to proprietry software. Long may it continue! Ben

7 years, 5 months

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Linux-audio-user November 2016