Linux-audio-user August 2009

linux-audio-user@lists.linuxaudio.org

153 participants
162 discussions

Re: [LAU] Jack0.116.2+svn3592-2 disconnect Ardour very often

by frederic rech

Hi Patrick, I have made these : compile an RT kernel, and "do something" in fstab, limits.conf, group. Surely there are other files to modify, but don't have heard about they yet... If you have any idea don't hesitate ! Oh, soft mode is not so good, same error comes after a while, I will try to recompile Ardour and Jack to see if it fix the problem. Anyway, thanks for your replies. Freely --fred --- En date de : Sam 29.8.09, Patrick Shirkey <pshirkey(a)boosthardware.com> a écrit : De: Patrick Shirkey <pshirkey(a)boosthardware.com> Objet: Re: [LAU] Jack0.116.2+svn3592-2 disconnect Ardour very often À: "frederic rech" <f.rech(a)yahoo.fr> Date: Samedi 29 Août 2009, 0h59 Hi, It's good to hear that helped. There are several steps you can take to make your system more capable of low latency and avoid xruns. They include installing a real time kernel and making some changes to the configuration of various parts of the system. Cheers. Patrick Shirkey Boost Hardware Ltd On 08/29/2009 02:59 AM, frederic rech wrote: Thanks for replying Patrick : soft mode seems to work a lot, what do you means with "fine tune" ? --- En date de : Ven 28.8.09, Patrick Shirkey <pshirkey(a)boosthardware.com> a écrit : De: Patrick Shirkey <pshirkey(a)boosthardware.com> Objet: Re: [LAU] Jack0.116.2+svn3592-2 disconnect Ardour very often À: "frederic rech" <f.rech@yahoo..fr> Cc: linux-audio-user(a)lists.linuxaudio.org Date: Vendredi 28 Août 2009, 10h36 On 08/28/2009 05:21 PM, frederic rech wrote: Hi list, Met a problem, with Jack as far as I can understand... I installed Jack + lib and dev + qjackctl from the Sid repositories on this Lenny based P4 machine with Fluxbox as WM.. Then build Ardour from svn. When do any change in an Ardour session, at the next PLAY it says Jack disconnect Ardour cause it was not fast enough, and ask to try to restart Jack, reconnect Ardour and save the session.. Nothing can be done, and Ardour is freezed. When restarted, all connections have disappeared... I try with a version of Ardour from the repos, and it's the same, so think problem is on Jack side. Is someone in the list have had the same problem, and/or an idea to solve this ? Any help will be appreciate, thanks ! Freely --fred You can add a flag to jack commandline that will make it ignore xruns. Maybe that will help. ex. jackd -d alsa -s -s = softmode You can also fine tune your system to be able to handle lower latency playback and increase stability. Patrick Shirkey Boost Hardware Ltd _______________________________________________ Linux-audio-user mailing list Linux-audio-user(a)lists.linuxaudio.org http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user

14 years, 7 months

ZynAddSubFX -- Zombifies on opening patch

by adam faranda

I am running Debian lenny; with a home-baked RTkernel (linux-2.6.29.6-rt23). I built Jack with no problem; I am even getting 2.67 ms latency without no Xruns using my laptop's sound cards. I installed ZynAddSubFX via the 'Add or Remove Programs' Gnome Applet. It runs like a dream; I can load up the PADSynth and play lots of notes really fast with out so much as a click. I created a neat sounding string/voice patch and saved it, and here is where I encountered the problem. I opened the patch, and began to play on the keyboard -- no sound. I restarted Zyn, and had no problem playing the factory patches, however all went silent as soon as I opened my patch, even the factory patches. I repeated this process, this time with the Jack connection manager in view. Sure enough, as soon as I loaded my patch, the output plug for ZynAddSubFX dissappeared. Now I get curious. I start Zyn from the terminal, and everything seems fine. As soon as I open my patch, I get the following message: " zombified - calling shutdown handler " Any help solving this issue would be most appreciated, especially since Zyn is one of my absolute all time favorites. I will continue to work on this and post my progress. I have tried to compile Zyn from source, but I can't get fltk to work properly, hence downloading the binaries. Thank you all. ----Adam

14 years, 7 months

kudos to Dave Phillips

by Kim Cascone

kudos to Dave Phillips for an excellent article on Linux audio written in the current issue of Ubuntu User he also has great advice on hardware and some interesting tidbits on my favorite piece of audio software: Ardour check it out: http://www.ubuntu-user.com/

14 years, 7 months

Jack0.116.2+svn3592-2 disconnect Ardour very often

by frederic rech

Hi list, Met a problem, with Jack as far as I can understand... I installed Jack + lib and dev + qjackctl from the Sid repositories on this Lenny based P4 machine with Fluxbox as WM. Then build Ardour from svn. When do any change in an Ardour session, at the next PLAY it says Jack disconnect Ardour cause it was not fast enough, and ask to try to restart Jack, reconnect Ardour and save the session. Nothing can be done, and Ardour is freezed. When restarted, all connections have disappeared... I try with a version of Ardour from the repos, and it's the same, so think problem is on Jack side. Is someone in the list have had the same problem, and/or an idea to solve this ? Any help will be appreciate, thanks ! Freely --fred

14 years, 8 months

Re: [LAU] ableton live in vmware

by sonofzev＠iinet.net.au

On Fri Aug 28 13:26 , "Gabriel M. Beddingfield" sent: > > >On Thu, 27 Aug 2009, Atte Andre Jensen wrote: > >>> Hydrogen has some similarities to AL... so I've pondered if it could be >>> forked (or developed) to become a live DAW. >> >> Could you elaborate? What similarities, what's missing (just the big >> picture), it's been a while since a glanced at hydrogen. > >The main feature of AL is the scenes and loop-based composition, >right? This is essentially a specialized sequencer/sampler. And >hydrogen is a sequencer/sampler. > >Further, Hydrogen is based on the idea of have several patterns >(like a loop) that you set up. Then the song is composed in a >sort of paint-by-numbers fashion. This is a lot like AL's scenes. > >Hydrogen also has some DAW-like features, including some primative mixing >and FX. > >Hydrogen lacks any code for looping or beat slicing. Also, the audio >internals are a little ugly IMHO -- but I've been working to improve that. >When I'm done, I expect the backend to be *very* DAW-like. > >OTOH, a better starting point *might* be something like sooperlooper. > >> Just thinking about doing a high performance, jack enabled, realtime >> friendly audio engine makes me tired (maybe because I wouldn't know the >> first think in doing it right). > >Heh. That stuff that gets my motor running these days. :-) > Reading this is getting my motor running.. I would love to eventually be able to drop my MPC2000 xl driven hardware rig for something Linux driven.. with MIDI controllers (and still keeping some of my hardware synths)..

14 years, 8 months

jackd and jamin: xine disconnects at every song

by lanas

Hello all, I'm using jackd and jamin at work to help the sound in cheap headphones in such a way: # xine -A jack *.ogg Then I route the signal from xine to jamin and use jamin's bass boost for instance. xine disconnects from jamin at the end of each song. I have to manually reconnect it using qjackctl's switch panel. I run a rather 'old' version of xine/jackd/jamin (Fedora 8). Is this a problem with such versions ? Or, is there an option to be given somehow to tell xine to maintain the connection until all songs are played ? Cheers.

14 years, 8 months

Re: [LAU] another csound vs supercollider question

by cunnilinux himself

> And as both are sound *programming* languages, the speed also depends > on how well you've designed your Csound/SC programs itself. that's the main problem for me if i dare test it myself :) i have learned how to optimize things in csound, but could not find any tips about supercollider. porting some cpu hungry algorythms is not so hard as doing it _right_. -- sex, bike, open source!

14 years, 8 months

another csound vs supercollider question

by cunnilinux himself

does anybody know how supercollider performs in realtime comparing to csound? which one is faster? thanxx in advance. -- sex, bike, open source!

14 years, 8 months

Re: [LAU] another csound vs supercollider question

by sonofzev＠iinet.net.au

On Thu Aug 27 20:15 , Ken Restivo sent: >On Thu, Aug 27, 2009 at 06:27:58PM +0930, cunnilinux himself wrote: >> does anybody know how supercollider performs in realtime comparing to csound? >> which one is faster? >> >> thanxx in advance. >> > >I have to vote "cunnilinux" as best email address, possibly ever. > >-ken agreed

14 years, 8 months

Blender Open Movie Projects: Soundtrack made by Open audio tools!?

by Grammostola Rosea

Hi, I was a bit surprised that the soundtracks made for the open movie projects of Blender (which are great!), are made with proprietary software. So I opened a discussion about this on their forums and got a reply from the producer of the projects Ton Roosendaal: http://www.blender.org/forum/viewtopic.php?p=74539#74539 The discussion is if the open source audio tools are good enough to do such a project and if there are people who are able to do the job of making a soundtrack for the open movie projects with those open source audio tools. Join the discussion on that forum if you want. \r

14 years, 8 months

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Linux-audio-user August 2009