Linux-audio-user August 2009

linux-audio-user@lists.linuxaudio.org

153 participants
162 discussions

by David Baron

Simply listening to music with mplayer or xmms running through jack: I get xruns approximately every 20 minutes--around the hour, 20min, 40min. Not exact but +-2 second but around the third hour point. Xmms running without the realtime option--this is an older application that seems to want root priviliges to do this. Play is smooth except every 20 minutes. Mplayer is fun -ao jack,alsa.

15 years, 5 months

[ANN] KMidimon 0.7.1 released

by Pedro Lopez-Cabanillas

KMidimon is a MIDI monitor for Linux using ALSA sequencer and KDE4 user interface. Changelog 2009-08-10 0.7.1 * Optionally translate notes, controllers and program numbers into names. * Support for GM, GS and XG standards, using .INS definition files. * New context menu option: adjust column sizes. * Fine grained event filters, in addition to the old coarse filters. * Fixed unregistered bug: don't change the current sequence PPQ/Tempo when applying the preferences dialog. * New dialog showing information about the current loaded sequence. * Display more SMF events: Sequence Number, Forced Channel, Forced Port and SMPTE Offset. * Playback speed control: tempo "zoom" slider allowing continuous scaling from 50% to 200%. Copyright (C) 2005-2009, Pedro Lopez-Cabanillas License: GPL v2 More info http://kmetronome.sourceforge.net/kmidimon/ Sources http://downloads.sourceforge.net/kmetronome/kmidimon-0.7.1.tar.bz2 http://downloads.sourceforge.net/kmetronome/kmidimon-0.7.1.tar.gz openSUSE RPM packages http://software.opensuse.org/search?baseproject=ALL&p=1&q=kmidimon Regards, Pedro

15 years, 5 months

Re: [LAU] JAMin updates?

by eviltwin69＠cableone.net

On Tue Aug 4 14:09 , Arnold Krille sent: >On Tuesday 04 August 2009 12:36:40 Jan Depner wrote: > >> There really isn't much we can add to it. In fact, I think we probably > >> want to remove a couple of things ;-) > > > >For example that 10ms delay so it gets (more) usable for live-foh usage? ;-) > > Unfortunately, I don't think there's any hope for that. That's just processing overhead. I was thinking more of the per band delays. I added those, mostly just for fun and to learn how the processing worked. They make a minor difference in the output but not enough to warrant keeping them. > >Arnold > ---- Msg sent via CableONE.net MyMail - http://www.cableone.net

15 years, 5 months

Re: [LAU] aplay and HDSP single channel?

by Peter Plessas

Florian Faber wrote: > Peter Plessas wrote: > >> how can i tell aplay to use just single channel(s) of my HDSP card? >> When doing: >> aplay -D default:Card=DSP file.wav >> i get playback on all 18 channels. > > You probably want to try jack. Thank you, i would like to stick with also for the time being since this is part of a script that should use as little other components as possible. regards, P

15 years, 5 months

Round 5: [was Re: Report: Pulse Audio vs Jack on Fedora 11]

by Patrick Shirkey

For Round 5, I have updated pulseaudio to the latest dev version. pulseaudio 0.9.16-test4-7-gaa74 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ - This time round I can successfully load the pulse module-jack-sink/source and play totem through pulseaudio+jack. System load when playing totem goes up to around 20% which seems kind of high but nothing like it would need to lock things up. However I after about 15 minutes the jack source and sinks disappeared and running "pulseaudio -k" returns with E: main.c: Failed to kill daemon: No such process This seems to be related to looking at the "Sound Preferences" dialog. As it has happened a couple of times now. Restarting pulseaudio brings both sink and source back and I can resume playing with totem. So it would appear that there are some stability issues with the pulseaudio jack modules, gnome-volume-control and or pulseaudio. - Testing skype returns with "problem with audio playback" if the outputs are set to pulse so that is fairly annoying. Running from the commandline I get this when I make a test call: ====================================== $ skype ALSA lib control.c:874:(snd_ctl_open_conf) Cannot open shared library /usr/lib/alsa-lib/libasound_module_ctl_pulse.so ALSA lib pcm.c:2171:(snd_pcm_open_conf) Cannot open shared library /usr/lib/alsa-lib/libasound_module_pcm_pulse.so ALSA lib pcm.c:2171:(snd_pcm_open_conf) Cannot open shared library /usr/lib/alsa-lib/libasound_module_pcm_pulse.so ALSA lib control.c:874:(snd_ctl_open_conf) Cannot open shared library /usr/lib/alsa-lib/libasound_module_ctl_pulse.so ALSA lib pcm.c:2171:(snd_pcm_open_conf) Cannot open shared library /usr/lib/alsa-lib/libasound_module_pcm_pulse.so ALSA lib pcm.c:2171:(snd_pcm_open_conf) Cannot open shared library /usr/lib/alsa-lib/libasound_module_pcm_pulse.so ALSA lib control.c:874:(snd_ctl_open_conf) Cannot open shared library /usr/lib/alsa-lib/libasound_module_ctl_pulse.so ALSA lib pcm.c:2171:(snd_pcm_open_conf) Cannot open shared library /usr/lib/alsa-lib/libasound_module_pcm_pulse.so ====================================== Seems to be library related as pulse is installed in /usr/lib64/ by default. Skype is looking for the 32 bit libs. Figure there must be a workaround for that one. I run "yum install alsa-plugins-pulseaudio.i586" then skype doesn't complain about problem with audio playback. Instead I get these messages: ============ socket(): Address family not supported by protocol ALSA lib pulse.c:272:(pulse_connect) PulseAudio: Unable to connect: Connection refused ============ So I remove alsa-plugins-pulseaudio.i586 Now I try linking the /usr/lib64 module library to the /usr/lib folder ln -s /usr/lib64/alsa-lib/libasound_module_pcm_pulse.so /usr/lib/alsa-lib/ This doesn't work either. I see the same "Cannot open shared library..." messages in the terminal. So it looks like we need a workable solution for running skype with pulseaudio on a 64 bit platform. =================================== * Skype You can just visit Skype's site and click on the Fedora 7 package. Select to open it with 'Package Installer (Default) and you are done. Alternatively you can install the Skype repository. Open a terminal and type: su -c 'gedit /etc/yum.repos.d/skype.repo' In that file copy the following lines: [skype] name=Skype Repository baseurl=http://download.skype.com/linux/repos/fedora/updates/i586/ enabled=1 gpgkey=http://www.skype.com/products/skype/linux/rpm-public-key.asc gpgcheck=0 Now you can easily install/update skype by typing: su -c 'yum install skype' su -c 'yum update skype' =================================== Also tried "usermod -a -G pulse user" where "user" is the name of the user who needs to use skype. Still no luck. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Winner: Jack and Pulse Audio. Pulse still a little unstable but mostly working nicely with jack. Looser. Skype. If I want to use Skype I have to turn off jack. However if I get a usb phone then my problem is solved as I could set it as the Skype device and use my onboard device for jack+pulse audio. Conclusion. Pulse Audio and Jack will work together if running pulseaudio v 0.9.16 or greater. Just remember to 1: pulseaudio -k 2: start jack 3: puseaudio -D -nF ~/jackd.pa Or add the above commands to the qjackctl config panel. Patrick Shirkey Boost Hardware Ltd

15 years, 5 months

Kim did the switch to Linux

by Frank Barknecht

Hallo, here's an excellent read about Kim Casone (of .microsound and this list, too) switching from Mac to Linux: http://createdigitalmusic.com/2009/08/04/linux-music-workflow-switching-fro… (URL in one line) Great work, Kim! Ciao -- Frank

15 years, 5 months

libflashplayer library path

by Patrick Shirkey

Hi, Does anyone know how to make libflashplayer(64bit) use /usr/lib64 instead of /usr/lib/ Cheers. -- Patrick Shirkey Boost Hardware Ltd

15 years, 5 months

[OT] Suggestions for a cheapo video recorder?

by rosea grammostola

Hi, Going on holiday to Prague/ Tjech Republic. I would like to experiment a bit with filming and stuff. Any suggestions for a real cheapo camera? (I take my bike with me, so it would be nice if I could make a 'filming while biking construction' ;) ) Thanks, \r

15 years, 5 months

Re: [LAU] Kim did the switch to Linux

by Michael Bohle

Nice article. But colored by ideology. I "switched" from Linux to Mac because... -Now I have the freedom of choice what kind of apps I want to use (free software or pro apps) -I have no more headache about bad RT Kernels and user permissions -Only one audio system - core audio - and it is easy to handle -It works rock stable and very intuitive -a very good workflow covering all technics of modern multimedia production -the audio apps are mature production tools with all features I need -Ableton Live - more then a DAW -I can work with video and audio together without crashes -I'm more productive with a Mac environment -I doesn't need to be an geek/nerd to use my computer but I can if I want Only some points. Very subjective. I'm not "against" Linux -I think it is a nice OS for audionerds with a good amount of time. And for pure harddisk recording, developing and testing new concepts. Sooperlooper is an good example: first made for Linux, then ported to OS X and now the "mainstream-Daws" Live and Logic have loopers as new features in their latest versions. regards, Michael ----- original Nachricht -------- Betreff: [LAU] Kim did the switch to Linux Gesendet: Mi, 05. Aug 2009 Von: Frank Barknecht<fbar(a)footils.org> > > Hallo, > > here's an excellent read about Kim Casone (of .microsound and this list, > too) > switching from Mac to Linux: > > http://createdigitalmusic.com/2009/08/04/linux-music-workflow-switching-from > -mac-os-x-to-ubuntu-with-kim-cascone/ > (URL in one line) > > Great work, Kim! > > Ciao > -- > Frank > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user(a)lists.linuxaudio.org > http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user > --- original Nachricht Ende ----

15 years, 5 months

Re: [LAU] Freewheeling, keyboard

by rosea grammostola

On Fri, Aug 7, 2009 at 11:55 AM, Danni Coy <danni.coy(a)gmail.com> wrote: > > I'm wondering if a cycle is a good display for such a thing... Maybe a >>> vertical line would be more easy, with some mark/ timing tools or something. >>> Or be able to set loop ranges in realtime... >>> >> > The Author designed it as a tool for creating non-linear music. It is > usually used in a live context where the person using it is a musician of > some kind. Like a musical instrument it does take some skill to master. The > great thing about it is that the computer interaction is so straight forward > that you can sing or perform with an instrument and use freewheeling and not > have the two interfere with each other. ( a foot controller is a must for > two handed instruments) > > > > Stick with it - It takes a bit of practice. But gets fun very quickly. I > generally use Freewheeling for sketching out an idea then I import the loops > into Ardour and do polishing there. > Thanks for the enthusiatic responses. What is a foot controller and what can you do with it (with fweelin and other apps)? I'm a total noob on such things. \r

15 years, 5 months

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Linux-audio-user August 2009