Linux-audio-user February 2013

linux-audio-user@lists.linuxaudio.org

142 participants
178 discussions

by Peter P.

Hey list, using jack_capture on an -RT kernel, I see the following message from the program: Warning. Could not set higher priority for a SCHED_FIFO process using setpriority(). How could I set this higher priority? thank you all, best, Peter

12 years, 1 month

Re: [LAU] building ardour3 on arch linux problem

by Fero Kiraly

Thanks Paul, but it stops the config process... Checking for 'cwiid' >= 0.6.00 : not found The configuration failed (complete log in /home/paum/AUR/ardour3-svn/src/ardour3-build/build/config.log) ==> ERROR: A failure occurred in build(). Aborting... fero

12 years, 1 month

Re: [LAU] Jack users - how many channels do you want with PA module-jackdbus-detect?

by Mac

>Date: Wed, 27 Feb 2013 14:05:40 +0100 >From: "Kaj Ailomaa" <zequence(a)mousike.me> >To: linux-audio-user(a)lists.linuxaudio.org >Subject: Re: [LAU] Jack users - how many channels do you want with PA > module-jackdbus-detect? >> >> I happen to agree. If there are x PA devices on my MOBO, I want to see >> x of them in JACK. >> > >Not sure if we're talking about the same thing here. I wasn't suggesting >we make devices not show. Only that the module connecting PA to jack would >be stereo by default. > I don't typically think of "stereo", but, just 2 channels that happen to be left and right. I don't pretend to know about PA. I'm guessing, from your question, that PA has the concept of pairing two JACK sinks/sources as a stereo sink/source? >> > >Are you saying you would be using jack through you firewire device to get >surround, instead of what I would assume you have, an onboard device that >also has surround support directly with PA? >Why use jack for that? > Different config for different things: Audio source (5.1, stereo, youtube) >>>> firewire >>>> tri-amp'd 1kw system or: Audio source (whatever) >>>>> mobo devices (say headphones) Mac

12 years, 1 month

Re: [LAU] building ardour3 on arch linux problem

by Fero Kiraly

thanks Paul, strange thing is that I have cwiid installed on system. the newest version. I will try build by myself. fero.

12 years, 1 month

building ardour3 on arch linux problem

by Fero Kiraly

Hallo, if any archer could help me ... yaourt -S ardour3-svn it complains about: Checking for 'cwiid' >= 0.6.00 : not found but I have cwiid installed on system... what is wrong ? thank you. fero

12 years, 1 month

Re: [LAU] building ardour3 on arch linux problem

by Fero Kiraly

thanks friends, but: I have cwiid lib up to date : cwiid-0.6.00-12 headers files seems be ok: [...] Checking for header cwiid.h : yes Checking for header bluetooth/bluetooth.h : yes Checking for 'cwiid' >= 0.6.00 : not found The configuration failed (complete log in /home/paum/AUR/ardour3-svn/src/ardour3-build/build/config.log) ==> ERROR: A failure occurred in build(). Aborting... that is what I dont understand.. fero

12 years, 1 month

OSC-controllable lightweight soundplayer for linux?

by andersvi＠notam02.no

Hello. Im looking for ways to control basic audio-playback from within an application here. Need just simple things like 'load file', 'play', 'pause'/'unpause', 'stop', perhaps 'seek s.' I know about the various -daemon and -input modes for alsaplayer and mplayer, which is a good plan-B or C - but want to look for OSC-support first. Q: does any of the standard mediaplayers (aplay, mplayer, alsaplayer, sox/play, banshee, amarok, totem, rhythmbox,xmms....) support OSC-control? Im looking for something very light-weight, fast ("instant") start-up and play. Ideally it would be a player already packaged in the standard distributions. I can probably use a "daemon-mode" player, but need to have separate access to several instances without too much fuzz. Thanks for all relevant suggestions. -anders

12 years, 1 month

Building Audio from a Server Core?

by grekimj＠acousticrefuge.com

Am 27.02.2013 19:46, schrieb Grekim Jennings: >> How difficult or even possible is it to start with a server core system >> and make it useable for a audio? >Very difficult. I guess, the advantage in speed one may get from an >custom-build minimalist system would need some 10 years to collect >enough seconds to bring back the time it takes to build the system in >the first place. >Why not just install a major distro plus audio-layer and run it with >Fluxbox or E or on tty? If I compare the performance of heavy >audio-setups under KDE4 and under Fluxbox on the same system I find it >hard to see any difference... Okay thanks. Well, I just installed Squeeze with only 'laptop' and 'system tools' packages selected. And....audio (usb/Audiobox) is working without any additional downloads, tweeks or anything. So obviously something was missing in the server install. Anyway, I'm just excited that this setup is looking good so far. >> I don't need a GUI/desktop for this. >> I installed Lubuntu server core to a usb flash drive. I added myself to >> the audio group, but my usb Audiobox does not seem to be working, >> although it is recognised with aplay -l. Should it work without any >> additional steps? >> I suppose I could build an Arch system, but I was pleasantly surprised >> by the performance of Ubuntu 12.04 (desktop) with the particular >> software I want to run and thought I would try an even more basic >> setup. Thanks!

12 years, 1 month

Re: [LAU] Jack users - how many channels do you want with PA module-jackdbus-detect?

by Mac

> > Message: 13 > Date: Tue, 26 Feb 2013 14:21:22 -0800 > From: "Len Ovens" <len(a)ovenwerks.net> > To: "Bearcat M. ????ndor" <hometheater(a)feline-soul.com> > Cc: linux-audio-user(a)lists.linuxaudio.org > Subject: Re: [LAU] Jack users - how many channels do you want with PA > module-jackdbus-detect? > Message-ID: > <9f9bcd4e386e82d725192bbb97f70bdd.squirrel(a)ssl.ovenwerks.net> > Content-Type: text/plain;charset=iso-8859-1 > > > On Tue, February 26, 2013 10:50 am, Bearcat M. ????ndor wrote: >> I assume that the channels can be anything we want and don't have to be >> based on ITU standards? I'm planning on playing with ambisonics sometime >> soon. > > Jack remains as is with whatever number of channels your audio interface > has. Pulse by default now will create the same number of channels as well. > For a 10 channel card this is over doing things. Most uses of bridging > pulse to jack only require 2 channels (or even 1 for phone work). Jack > just calls channels 1, 2 ... to whatever. Pulse names them for surround up > to 7.1 and then calls any extra aux1 etc. I do not know if pulse also > plays with the sound to add surround stuff or not. I have had one user > tell me it does... but I don't know. > > Personally, I would like to see the jack source/sink treated as a device. > If the jack detect module is loaded then a device appears for it weather > jack is running or not. It should allow jack to be set up in the same way > as a card, stereo, 5.1, 7.1. Input or output only etc. Then if jack does > show up that many lines are created. It really doesn't matter if the > device jack is talking to has more or even less channels than pulse sets > up. > > -- > Len Ovens > www.OvenWerks.net > > > > ------------------------------ > > Message: 14 > Date: Tue, 26 Feb 2013 18:22:42 -0700 > From: Bearcat M. ??ndor <hometheater(a)feline-soul.com> > To: linux-audio-user(a)lists.linuxaudio.org > Subject: Re: [LAU] Jack users - how many channels do you want with PA > module-jackdbus-detect? > Message-ID: > <CAMPo9soF=e-F1Y1Qg+phrxAmfN+nATPoavBnPNn4nncscD-ijA(a)mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > I like that idea too Len, very much. Thanks for the in-depth answer too. > > > On Tue, Feb 26, 2013 at 3:21 PM, Len Ovens <len(a)ovenwerks.net> wrote: > >> >> On Tue, February 26, 2013 10:50 am, Bearcat M. ??ndor wrote: >> > I assume that the channels can be anything we want and don't have to be >> > based on ITU standards? I'm planning on playing with ambisonics sometime >> > soon. >> >> Jack remains as is with whatever number of channels your audio interface >> has. Pulse by default now will create the same number of channels as well. >> For a 10 channel card this is over doing things. Most uses of bridging >> pulse to jack only require 2 channels (or even 1 for phone work). Jack >> just calls channels 1, 2 ... to whatever. Pulse names them for surround up >> to 7.1 and then calls any extra aux1 etc. I do not know if pulse also >> plays with the sound to add surround stuff or not. I have had one user >> tell me it does... but I don't know. >> >> Personally, I would like to see the jack source/sink treated as a device. >> If the jack detect module is loaded then a device appears for it weather >> jack is running or not. It should allow jack to be set up in the same way >> as a card, stereo, 5.1, 7.1. Input or output only etc. Then if jack does >> show up that many lines are created. It really doesn't matter if the >> device jack is talking to has more or even less channels than pulse sets >> up. >> >> -- >> Len Ovens >> www.OvenWerks.net >> >> I happen to agree. If there are x PA devices on my MOBO, I want to see x of them in JACK. I am one of the "few" mentioned in one post who have a 12 chan. firewire device as well as the devices on the mobo. I have a tri-amp'd stereo using a variety of JACK apps such as CALFrack and zita-lrx. (hopefully quad-amp'd and surround in the future) When I installed UBStudio 12.04 I was glad to see that PA just created the sink/sources in JACK and I didn't have to go figure something out. It's quite nice to be able to patch things around from the PA devices. I have yet to configure a surround sound system and have not seen anything showing up labeled as front, side rear, etc. (Is there a surround sound app? Do any of the apps that will play a dvd or bluray on a PC provide surround? Haven't attempted it yet, just askin.) Also, if you set the default to stereo, how does it choose whether to use the jack (as in 3.5mm) on the front or the rear of the computer case? Regards, Mac

12 years, 1 month

[a bit OT] freesound.org - a short venting

by Julien Claassen

Hello everyone! I hope, that there is someone here, who has strong ties to freesound.org. I went back there today to give registration another go. I said, that their registration was rather a nuiance (captcha codes). Now I find audio captchas, as provided by google. Which is all very well. I can download the audio captcha and listen to it. After a quarter ofan hour Imanaged to guess a right code and then was asked to copy a lot of text into another entry field. OK, even that is no problem. But then, there is no button to press. Javascript. So I think, I might give it a go and send a message to kindly ask for support. But of course: I am politely asked to use the captcha. I have been wondering: for a free site, sharing material with all the world, if the world so desires, they are very well hidden. I know a fair number of commercial web sites, which are easier to access and register with, including - but not limited to - amazon and jpc, a large German musical instruments' shop,... I know, they have problems with spam, but so have others. So have/had we at some time, so have some forums, I once registered with and still, they all weren't that bricked off. - I am part of a minority, even a rather small one, seeing, that I use text-based programs, whereever possible. But I nkow of others, who do have their scripts disabled for various reasons (blind or not). I do hope, that someone here really is part of the team, otherwise I would have wasted words and flooded this list with unnecessary spam of my own. :-) Warm regards Julien ---------------------------------------- http://juliencoder.de/nama/music.html

12 years, 1 month

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Linux-audio-user February 2013