Linux-audio-user May 2015

linux-audio-user@lists.linuxaudio.org

59 participants
62 discussions

Jack fails in QJackCtl but not in command line

by Anton Curl

Hi everyone! To launch jack I run: /usr/bin/jackd -P80 -dalsa -r44100 -p256 -n2 -Xseq -D -Chw:5,1 -Phw:5,0 This is what I have in my .jackdrc. In command line, there is no problem. It works perfectly. But if I try to launch Jack with this parameters through QJackCtl, I get this in the message window: creating alsa driver ... hw:5,1|hw:5,1|256|3|44100|0|0|nomon|swmeter|-|32bit The 5.0 output becomes 5.1. I don't understand why. Does anyone have an idea of what happen ? Sound card: Fast Track Pro OS: Ubuntu 12.04 Jack: jackdmp 1.9.8 QjackCtl: 0.3.8 pulseaudio-module-jack installed and Fast Track Pro disabled in PulseAudio Anton Curl

8 years, 11 months

Linux Audio User Group in Karlsruhe

by Gerald

Hi guys, is there a Linux audio user group in Karlsruhe/Germany. If no, would anyone living in the area like to initiate one with me? I live in Heidelberg but no one on this list seems to live there too, so I'm expanding my search, and riding by train doesn't take that long. Gerald

8 years, 11 months

Lenovo w540 with Impact Twin performance results

by Moshe Werner

Hi all, ever again someone comes up with a question regarding what AI works with what laptop, so I just thought I would share my results. Last September I bought a Lenovo w540 laptop, spec'd with i7 4700mq processor 1TB Samsung Evo 850 SSD system drive 500 GB HDD in Optical drive caddy 8 GB RAM I configured it to dual boot Windows 8.1 (for my wife;) and kxstudio. kxstudio runs with the lowlatency 3.13 kernel. I already owned a TC Impact Twin Firewire interface that I intended to try out on Linux. I only just now got to connect the two, the w540 doesn't have Firewire onboard so I bought a 2 port express card for 20 Euros (brand is inLine, chipset VIA VT6315). I can now happily report back that I'm running the TC Impat Twin with ffado and Jack at 64 frames, 2 buffers, with 2.6msec latency, and it's very stable till now. That is with HT turned on (I did not yet try it with HT turned off). At 32 frames I immediately get hundrets of xruns. The ffado mixer doesn't offer control over the Impact Twin, except for the sample rate and clock master. That means neither configuring the TC for standalone operation, nor zerolatency operation will work on Linux (for now). In Jack all 14 I/O and the Midi ports of the interface are shown correctly. I launched a ~50 track ardour 3 project with various LV2 Plugins (IR, Calf reverbs EQs and Compressors, Invada stuff, Linuxdsp stuff etc.) and got no xruns at all. All in all I'm very happy, and I want to thank all the amazing folks out there that are working hard to make Pro audio work on Linux possible. I'm only a semi pro "user" (supporting financially a few projects, where I can), but started out with Linux audio work in 2004, and it is remarkable where this amazing community got in those 10 years. Cheers Moshe

8 years, 11 months

Linux Audio Berlin user group

by Bruno Gola

Hello! There were lot's of Berliners at LAC 2015 and after talking to some of them we thought it would be nice to start a linux audio user group here in Berlin. This is an open call to all Berlin based Linux Audio users and developers! Let's meet, talk and share knowledge :) So far we have a mailing list[1] and an empty twitter account[2] (thanks to Sam :)) Our first meeting will probably be held at C-Base in the next weeks. We have no agenda yet, everyone is welcome, but me and Sam are more focused on electronic music stuff. Any suggestions on the date? [1] (as soon as the DNS starts working properly we send you the link to subscribe) [2] http://twitter.com/LAudioBerlin Cheers! -- Bruno Gola <brunogola(a)gmail.com> http://bgo.la/

8 years, 11 months

(Live) Music made with Linux: Sebkha-Chott @ Brutal Assault Festival (Cz) + Description of the live setup

by ORL

Hi! I already told you about Sebkha-Chott several times on this list, usually speaking about our releases (always under GNU/Linux, from the beginning to the end). Actually, Sebkha-Chott also uses GNU/Linux on stage to manage sound, lights and video of the whole show (see details below). I usually don't post shows list or tour schedule here (maybe I should), but this time it's a big and international festival, so it might be that some of you will be interested in it. So Sebkha-Chott will play at Brutal Assault Festival #20 in Jaromer (Cz), for the third time, but for the first time, we will use the GNU/Linux live setup they have on tour. The final schedule is not known yet, but it will be between 5th and 8th of August. If some of you live near Cz, are metalheads, that's the place you should be (if you ask me, this year's line-up is really great, the best I've known since I know this festival). http://www.sebkhachott.net/15-years-of-sebkha-chott-kourt Here it is (please note the video and lights part of the system won't probably play at Brutal Assault due to very tight changeover schedule). *Description of Sebkha-Chott's live setup* *Distribution* All machines, including RPI, are running Debian systems, mostly Jessie. http://www.debian.org *Session Handling* Session handling is managed through ladish and on some control machine small shell scripts. http://ladish.org *Audio* /Routing/ All the routing is managed through ladish, jack is configured with the restrict self-connect option. /Mixing/ The mixing/processing of any audio signals coming from the instruments on stage or from "virtual sources" inside the machines (synths, samplers) is done through a bunch of Non-Mixer (probably not uptodate) instances, running independently one from the other. All these Non-Mixers finally ends up in the FOH mix or on of the three monitors mix (which goes to in-ear monitors system). We highly recommend Non-Mixer for this type of setup, as you don't need a timeline, and Non-Mixer is really lightweighted, OSC controllable, and flexible. Ecasound might have done the job too, still. http://non-mixer.tuxfamily.org/ /Live Looping/ The "instrumental line-up" contains 2 basses, 2 guitars, 3 vocals and a drumkit, each of them goes to a single looper (for the drums, we only loop a stereo submix). We use Sooperlooper (probably not uptodate, and (uglily) patched so that Jack Transport Synchronization with SL as a master works with it and is recalled when at session load). http://essej.net/sooperlooper/ /Synths/ Additionnally to the physical instruments, 5 synths are running, 3 of them polyphonic, 2 of them monophonic. We use Alsa Modular Synth (probably no uptodate) for this. You might get the patches on github (see below) http://alsamodular.sourceforge.net/ /Samplers/ A virtual drumkit is also used, with really-non-drumistic sounds. We use tapeutape (patched not uptodate version) for this purpose. http://hitmuri.net/index.php/Software/Tapeutape /Clic/ We use Klick to send clic in every monitor. https://github.com/dsacre/klick *Lights* Lights are controlled using QLC+. We use four profiles projectors and 4 LED "barres", which are split into 8 RGB segments each, each segment mightbe controlled independently from the others. http://qlcplus.sourceforge.net/ *Video**s* Videos and Moving images are displayed on three V-form screens. Those videos are displayed using a self-developped software called PytaVSL (derivating from VSL, a set of pd patches we used on a children show) and based on Pi3D. This runs on RPIs (old ones, not the big beasts you might get for 30$!!!). This lays on a mapped-layers principle, each of them might be mapped with images or videos, the content can be changed with OSC control, and you can move or change properties (including visibility/inivisibility) of a layer using OSC too. By now, PytaVSL is not recommended for anyone except us (or you will have to put your hands in it, and you'll see then we're no real devs!!!). https://github.com/orlammd/pytaVSL https://github.com/tipam/pi3d *Controls* /MIDI/OSC Routing/ The whole thing is controlled via a centralized OSC/Midi router. We use Mididings for this purpose, and we highly recommend it, it's a really good piece of software which makes everything possible in such a setup. The version we used has been patched to be able to route/filter/manage OSC messages too. I propose this dirty patch to Dominic and I know he has worked on this, but I couldn't tell what's the current state of the software, as we do not use an uptodate version on this neither! /PedalBoards/ We use DIY pedalboards to trig the sequencers, loopers, and to change instruments sounds (including synths). These pedalboards are made of a "règle de maçon", push-buttons and a Teensy2.0 programmation board. It basically sends an OSC message /pedalBoard/button #number when you press a button. These messages are then managed by Mididings. There are two pieces of software for this, one on the board, one on the receiving computer. https://github.com/AMMD/Poly_PedalBoard /Touchscreen Interfaces/ All the mixers, the LASDPA plugs, and in some case the synths are controlled using touchscreen interfaces. We've developped a programm for this purpose called Ghislame. Initially developped in C++/Fltk, we ported it to python/kivy and finally it now uses a JS engine. Initial versions controlled more things (loopers, synths, mixers, lights), but in a quite weighted way. Current version (JS) only controls Mixers and Plugs, but does it much more fluently. One of these touchscreen interfaces is placed at FOH, so that mix of the show might be done from FOH. The other ones are sprayed on stage so that musicians might control their monitoring and some other things easily. https://github.com/jean-emmanuel/oschtmlgui https://github.com/AMMD/kvGhislame https://github.com/AMMD/Ghislame /Visual Monitoring/ Several small laptops are placed on stage with LiveDings (Mididings frontend) and slgui (SooperLooper GUI) running on them. *Sequencers* /Midi Sequencing/ seq24 in a really really patched version is used to sequence MIDI. It's used in matricial mode, and the patches we've done acts on many things: arbitrary number of beats in a measure, abitrary number of measures in a sequence, n-tuples, 16x13 matrix (instead of 8x2), play/stop controllable by Program Changes, and other crappy things. I really don't recommend our patched version which contains many bugs we learned to prevent! It's the very first software we've been patching, and.... wel.... seq24 is synced to Jack Transport as a slave. As far as I know this doesn't work anymore with more recent version of seq24, and as a result, our version is not uptodate. We will certainly change about this when we'll have time. We attend much from Non-Sequencer on that point! ;) /OSC Sequencing/ Over the Midi Sequencing, OSC sequencers are running. One controls the lights, one controls the videos, another one might send messages to audio machines (including seq24), and one runs over them all and might send the BIG SEQUENCE messages! We use a self-developped software called pyOSCseq. This sequencer can run looped sequence (as any other sequencer) but also can send on-shots sequence (many uses in theater context). https://github.com/jean-emmanuel/pyOSCseq /Jack Transport/ Jack Transport is used to synchronize every tempi/triggers and so on. Sooperlooper is Jack Timebase Master, and the other pieces of software that might be sync to are slaves. Considering that Sebkha-Chott'music is composed of many sequences in many metrics and tempis, with highly contrasted way of passing from one to the other, this point was a very critical point at the beginning of our work with machines (in 2008). -- ORL AMMD - Freak & Free Arts Coo[r]p www.ammd.net - 095 234 72 48

8 years, 11 months

Fwd: Re: Ardour Version Question: 2 versus 3?

by ORL

(I never paied attention that reply-to is not positionned by LAU...) Here's what I've been writing. Le 04/05/2015 20:56, Bruno Ruviaro a écrit : > On Monday, May 4, 2015, Ivan K <ivan_521521(a)yahoo.com > <mailto:ivan_521521@yahoo.com>> wrote: > > I have some question regarding versions of Ardour > that people are using. > > Currently, I am running Fedora 20, and their > software repository has two versions of Ardour available: > > ardour-2.8.16-12.fc20 > ardour-3.5.403-1.fc20 > > I seem to recall that in the past, despite > Ardour3 being available, some people were still preferring > to use Ardour2. This seems to be supported by the > fact that Fedora offers both versions. > > Why might one prefer Ardour2 over Ardour3? > > > I think some people stayed with A2 just because it was working well > for them and didn't want to run risks or change their workflow. I'm one of these people. Actually, I've been using Ardour2 for many years, but I was OK to switch to A3, especially because I was lacking several things (for example the fact that MIDI bindings weren't recalled after closing the session). Still I use Ardour for audio recording only, I have other habits concerning MIDI, and feel in ease with the modular approach allowed by Jack, so it was not absolutely necessary for me to swtich to A3. I tried (and am always trying, by the way), but I've experienced many bugs, including the big ones around MIDI things (MIDI being un-editable, then MIDI files being lost, and so on), and finally, I kept on Ardour2 for the moment, because, once again, I don't need Ardour to care about the MIDI. As I work in a studio and also for audio-engineers schools, I prefer to have something which works reliably and that I trust in, than a more bleeding-edge soft, and as far as I've tried for now (but I must say I didn't try A3 for 4 monthes), it lead me to stay on A2. I use Debian, and use the stable version when it's about schools, for example. There is something else too. I'm not so keen of A3 GUI. It's not that far from A2, but I'd like the sobriety of A2, and, more precisely, I really don't like the way Zoom/Scrolling is done in A3, and I really miss the scroll bars (mightbe I can custom my preferences so that it looks like that, I didn't try) of A2. To end up, but that's not really an Ardour pb, much more my workflow problem, but I feel A3 quite less usable in i3wm, as you need to recall much more key bindings to be able to close the windows you've opened (i3 doesn't provide window decoration) as there is no "OK" nor "cancel". Well, that's my reasons. By that time, I would be sad not to have Ardour2 (still, I've not tried A4). (to be honest, for my own audio-engineering works, I use non-mixer / non-timeline, and sometimes ecasound) Cheers. Aurélien -- ORL AMMD - Freak & Free Arts Coo[r]p www.ammd.net - 095 234 72 48

8 years, 11 months

Music made with linux: a773/attention span

by Atte

Hi Here's a new track from my a773 project. Beats melodic, glitchy jazz. https://soundcloud.com/a773/attention-span Hope you enjoy! -- Atte http://atte.dk http://a773.dk

8 years, 11 months

qjackctl: disable baloon popups?

by IOhannes m zmoelnig

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 this is something that has annoyed me endlessly for years, and i still haven't found a solution. the issue is minor (that's why i haven't asked before), but annoying nevertheless. so: i'm using qjackctl with the "system tray icon" enabled. when i close the application window, qjackctl keeps running and is accessible via the system tray. cool. that's what i want. however, every single time i close the main qjackctl window, a balloon pops up in my notification area, telling me that the "program will keep running in the system tray" and how to really shut it down. the first time i read this, this information was informative (i suppose, it has been years). but no longer. i already know that the program will keep running. that's why i'm using the system tray. there's no need to tell me again and again (even within a single session!). there *must* be simple way to "not show this message again", without completely disabling tray notifications. but how? btw, this is on Debian/sid with xfce4. fgasdmr IOhannes -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBCAAGBQJU0eVfAAoJELZQGcR/ejb4SY0P/3NphEAkGRawvdm4espj7i1J CIIGtUFTyvsKwFXEqXtAdlHz3/mt9pv1H17LEWdIxOfJ+ziY5dOC1HbAnNSPXmte 91AGmrFCNC8uKSrvCx+kySJEiU4AbNaSY0g8ORKMvOuCPAdO//9qXFBcSRaPX5eb rT7xtGKK+NYTmFSiPIypjW0ttGabtIjJE+Pg8e674rep+Q63ovxPBTBzkVcvJt4J udTKPc8+V7vZvC0Q0y4/vwiih5l0+7RypNxuapm+KY8zSgSkGUc2Wug2XMPhaLid Zmej+Kn/72PZflC5p7uo9JOZkXcShO7SX6296oaFqhFdtxlkUxmggZf/D6eeIGhA 91bACU/+GVgfXE8QUXX0XaifvstBaEwUMdpLIB9lLhC6sdROpl6hHFz/JMJSJYqt pX0oFI1YNzaT65E0BzOfQa4yxuyNO4BoYZ/C7wg4WtSMd/zHaiK5z9K0nxh1ruDM 5BNgeYNtvQ++FO3V0/eVkOwqab6hdS8/MfLRbro/BmJbNsg4MTDUxHZiL1AzXhIz 6l/SbMsdExY3NgbDQiVmfoW6P9MGDrBO/7n6DZj6g7O5lmtEdR9jhPKpFN3ApJzr +yVkxrcppph9eNMMUtAWnXh+XBGuuvfdrhakHoAZIaDGa3P7f6GsBjufyrysKGT1 SRBESzDoiLj+5K3rCOYr =ertZ -----END PGP SIGNATURE-----

8 years, 11 months

How to send MIDI clock or Jack Transport over local network?

by Bruno Ruviaro

Hi all, I'm a bit stuck trying to figure this out... I want to run SooperLooper in several laptops (in a laptop orchestra context), and be able to sync them. The laptops will be connected to a local network (wifi, or possibly via ethernet). >From what I read, I could try doing this either with a MIDI clock, or with Jack Transport (via NetJack? Though I don't need to send any audio to/from laptops). I've installed Rui's QmidiNet and QmidiCtl, but when I try to start them, I get an error message (setsockopt(IP_ADD_MEMBERSHIP): Invalid argument; socket(in): your kernel is probably missing multicast support. ). Are these the right tools for the job? How can I send a MIDI clock to several other laptops over a local network? Should I be trying NetJack instead? Any hints appreciated.... thanks! Bruno [*] I've ruled ou NetJack for Jack Transport sync, as it syncs all clients to one soundcard, where in my case each laptop will be playing with their own separate soundcard and speaker.

8 years, 11 months

Alsa setup question

by hollundertee＠gmx.net

Hi there, I didn't have access to the LA-lists for a number of months now, and the list admin was not helpful. I subscribed with this crappy mail provider now and hope that it will work. Sorry for advertisement and other crap that might go along with it. I do have some trouble setting up alsa the way I want it. The machine is a laptop that I carry around and use at home. What I want to have: 1) If on the road, the internal card (PCH) should be the default. 2) If at home, the usb card (UA25) should be the default. I had this working rather reliably at some point, but it doesn't work anymore. I have the following in /etc/modprobe.d/alsa-base.conf to prevent race conditions on boot: options snd slots=snd_usb_audio,snd_hda_intel options snd_usb_audio index=0 options snd_hda_intel index=1 However, I experience weird things with /etc/asound.conf, it gets overwritten on every boot with garbage. This is what it looks like when I boot without external interface: defaults.ctl.card 1 defaults.pcm.card 1 defaults.pcm.card 1 defaults.pcm.card 1 defaults.pcm.card 1 defaults.pcm.card 1 When the external interface is plugged in on boot, it looks somewhat like this (off the top of my head): defaults.ctl.card 0 defaults.pcm.card 1 defaults.ctl.card 1 defaults.pcm.card 0 defaults.pcm.card 1 defaults.pcm.card 1 defaults.pcm.card 1 defaults.pcm.card 1 Obviously total garbage, and I have no idea what service tries to be smart here. Any ideas? At least ~/.asoundrc does not get overwritten. Also, is there a reliable way to do what I want? Right now I have this in my ~/.asoundrc, but it does not do what I want. I suspected that alsa would set the only device actually there as default, but it does not, so with this setup I have no sound on the road: defaults.ctl.card 0 defaults.pcm.card 0 Thanks in advance for your help. Regards, hollunder

8 years, 11 months

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Linux-audio-user May 2015