Linux-audio-user December 2010

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chordata clam repo

by rosea.grammostola

Hi, Is there a CLAM repo for ubuntu lucid with chordata in it? \r

14 years, 10 months

controllerism on linux

by Renato

Hi all, any ideas/thoughts on how one would go about to make something similar to this on linux? http://www.youtube.com/watch?v=L2McDeSKiOU I'm speaking of the software side, i.e. supposing you have some midi knobs faders and buttons There's no single thing he does that's rocket science, the hard part IMHO is how to connect it all together so what approach would you take cheers renato

14 years, 10 months

Sound driver data conversion..

by Basavaraj Hiremath

Hi,My Linux PC is connected to USB headset through USB Analyzer. I am sending pcm data to my USB headset(#cat file.wav > /dev/audio), when I look the packets in the USB analyzer, this data is different that the wave file data. Does Linux sound driver does data conversion from PCM to something else?My understanding is pcm is raw data, it should send to USB headphone to convert D/A(DAC). Could any one help on this information? Thanks,Raj Basavaraj Hiremath

14 years, 10 months

How to make Jack remember soundcards, not alsa-slots

by ailo

...or to load devices into specific alsa-slots (hw:0, hw:1...) Does someone have a nice method to do one of these? Since I knew of no other method, I tried loading the cards into specific slots, according to this method found at planetccrma's home page: alias snd-card-0 snd-CARD_0 options snd-card-0 index=0 options snd-CARD_0 index=0 alias snd-card-1 snd-CARD_1 options snd-card-1 index=1 options snd-CARD_1 index=1 ... alias snd-card-N snd-CARD_N options snd-card-N index=N options snd-CARD_N index=N I have two m-audio delta devices and I never found a good way to configure alsa so they would load in a specific order. There was the problem of naming, since both cards have the same name. I think I would prefer the pulseaudio method, which remembers the card itself, not the alsa slot (I don't know anything about that, to be honest). Other things to consider is: More than 5 devices will be used, some of them usb midi (usb midi devices also appear in alsa sound slots). Two m-audio delta cards for audio input (8 + 4 inputs), and at least the sound cards need to always load in the same order with jack. Is it possible to get jack/alsa to remember the sound cards after reboot? -- ailo

14 years, 10 months

CDM Article: Ardour 3

by Gabriel M. Beddingfield

Some of you may be interested in today's CDM article about Ardour 3: http://createdigitalmusic.com/2010/12/ardour-3-free-daw-is-nearly-done-and-… -gabriel

14 years, 10 months

Using gigedit

by Q

Hello Does anyone here know how to use gigedit? The LinuxSampler forum seems to be pretty much dead -- people post questions, but no-one knowledgeable replies. I've searched the forum, which is not an easy task because its "common word" filter seems to rule out everything I want to search for. The documentation and posts I have found are anything but clear. The areas I want to find out about are velocity curves -- specifically how to turn them off. For example, I want a LPF connected to the modwheel, but this also renders the filter velocity sensitive, which I don't want. The other main areas are how to change the order of instruments within a gig file (changing the MIDI program number has no effect and I don't want to have to start again from scratch assigning 350 samples) and how to get keyswitching to work. Can anyone give me any help trying to achieve these things in gigedit? Cheers Q

14 years, 10 months

Re: [LAU] [Jack-Devel] RT_GROUP_SCHED kernel option makes JACK unusable in Ubuntu Natty

by rosea.grammostola

On 12/15/2010 12:56 PM, rosea.grammostola wrote: > On 12/15/2010 05:33 AM, Ronan Jouchet wrote: >> On 10-12-14 02:38 PM, ailo wrote: >>> On 12/14/2010 08:06 PM, Alessio Igor Bogani wrote: >>>> The -lowlatency 2.6.37-8.21~ppa1 kernel have RT_GROUP_SCHED enabled. >>>> Instead the 2.6.37-9.22~ppa1 one's have RT_GROUP_SCHED disabled. >>>> >>>> Anyone could test those? >>>> >>>> Ciao, >>>> Alessio >>>> >>> >>> On Natty, 2.6.37-9.22~ppa1, Virtualbox >>> >>> ... >> >> I confirm 2.6.37-9.22~ppa1 from abogani PPA (RT_GROUP_SCHED disabled) >> works fine. > > AFAIK the *.33 kernel from abogani, CONFIG_RT_GROUP_SCHED=y, works > fine (using audio.conf instead of limits.conf). > > (All though I have an issue with installing a package like > libboost-dev, which takes minuts when booted a RT kernel and seconds > when using the generic kernel, Ubuntu and Debian, kernel 2.6.33.7-rt2. > The Debian RT kernel has RT_GROUP_SCHED disabled though..., > > http://www.spinics.net/lists/linux-audio-users/msg74100.html ) > > \r BTW the kernel for Tango Studio has it also enable afaik grep -i RT_GROUP_SCHED /boot/config-2.6.32-25-lowlatency CONFIG_RT_GROUP_SCHED=y Lucid here. Does this whole story apply to Ubuntu 10.04 also? \r

14 years, 10 months

Re: [LAU] [PD] L2Ork Pd update now available

by Ivica Ico Bukvic

> You're simply hiding the bug: > 1. With the Properties dialogue open, go back and click somewhere > on the patch to deselect the iemgui. (Btw-- there are times when > this behavior is convienent, so please don't make the Properties > dialogue force focus.) > 2. Click "Ok". > 3. Still crashes. > > No crash in Pd-vanilla 0.43. That is because (afaik) vanilla 0.43 does not have apply undo at all. In other words apply actions that result from properties are simply ignored. In my case the way I am tracking items in undo is I seek selected items which now I realize is not the most robust way of doing so. That said, I did not make this fix to "hide the bug" but rather for the sake of consistency because I believe one needs to be in edit mode to edit, and getting properties for an object, particularly when there are many crammed near each other I believe one needs to select the item to reflect what they've selected, and then do operations that pertain to editing. I believe that allowing to edit items in this way while not in edit mode is essentially a bug from a usability perspective as it erases differentiation between performance (or whatever you will call it) and editing mode. All that said, I need to reconsider how to deal with undo and I have a pretty good idea now what needs to be done (e.g. by passing obj pointer to the undo in addition to the canvas pointer)...

14 years, 10 months

Re: [LAU] RT_GROUP_SCHED kernel option makes JACK unusable in Ubuntu Natty

by Ronan Jouchet

On 10-12-14 11:39 PM, Daniel Chen wrote: > On Tue, Dec 14, 2010 at 11:33 PM, Ronan Jouchet<ronan(a)jouchet.fr> wrote: >> I confirm 2.6.37-9.22~ppa1 from abogani PPA (RT_GROUP_SCHED disabled) >> works fine. >> >> I will leave the decision to Alessio (or somebody else from the kernel >> team) to close or not >> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/690010 , since a >> proper solution implementing cgroups management may be preferable and >> implementable. > > As Paul alludes to, changing this Ubuntu kernel config option doesn't > resolve the real issue, and I wouldn't be keen on changing the option > that clearly works for other applications. > > -Dan 101% agreed, if this option is here to stay (and it seems to be), a "proper solution implementing cgroups management" would be preferable Ronan

14 years, 10 months

Re: [LAU] apt-get and RT kernel strangeness

by rosea.grammostola

On 12/15/2010 04:31 AM, yermandu wrote: > Check this http://jackaudio.org/linux_group_sched grep -i RT_GROUP_SCHED /boot/config-2.6.33.7-rt29-1-amd64 # CONFIG_RT_GROUP_SCHED is not set > > 2010/12/14 rosea.grammostola <rosea.grammostola(a)gmail.com > <mailto:rosea.grammostola@gmail.com>> > > On 12/14/2010 04:50 PM, rosea.grammostola wrote: > > On 12/14/2010 04:26 PM, Jörn Nettingsmeier wrote: > > On 12/14/2010 04:10 PM, rosea.grammostola wrote: > > On 12/13/2010 09:38 PM, rosea.grammostola wrote: > > Hi, > > I have an oddity on Ubuntu Lucid. > > Installing libboost1.40-dev, default kernel, no > problemo. > > Installing libboost1.40-dev, RT kernel, install > (unpacking/ > processing) takes minuts! > > I have this oddity with another package, but most > packages install > normal. > > $ uname -a > Linux ubuntu 2.6.33-29-realtime #1-Ubuntu SMP > PREEMPT RT Wed Aug 4 > 20:14:20 UTC 2010 i686 GNU/Linux > > from: https://launchpad.net/~abogani/+archive/ppa/ > <https://launchpad.net/%7Eabogani/+archive/ppa/> > > $ apt-cache policy libboost1.40-dev > libboost1.40-dev: > Installed: 1.40.0-4ubuntu4 > Candidate: 1.40.0-4ubuntu4 > Version table: > *** 1.40.0-4ubuntu4 0 > 500 http://nl.archive.ubuntu.com/ubuntu/ > lucid/main Packages > 100 /var/lib/dpkg/status > > > (maybe not interesting, but iotop says: > CONFIG_TASK_DELAY_ACCT not > enabled in kernel, cannot determine SWAPIN and IO %) > > Any idea what this could be? > > wild guesses: > > Thanks > > * swap disabled in the rt kernel, and you're low on RAM? > > $ grep -i swap /boot/config-2.6.33-29-realtime > CONFIG_SWAP=y > CONFIG_CGROUP_MEM_RES_CTLR_SWAP=y > CONFIG_X86_BSWAP=y > CONFIG_RING_BUFFER_ALLOW_SWAP=y > > > 2GB RAM > > * are you running real-time tasks in the background (such > as jack)? > > No > > Hmm.... > > > Strange that is only happens with some packages like libboost-dev... > > Are there other RT kernels available for Ubuntu Lucid, to test a > bit? Should a kernel made for Debian also work? > > Thanks in advance, > > \r > > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user(a)lists.linuxaudio.org > <mailto:Linux-audio-user@lists.linuxaudio.org> > http://lists.linuxaudio.org/listinfo/linux-audio-user > > > > > -- > yermandu [at] gmail dot com >

14 years, 10 months

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Linux-audio-user December 2010