Linux-audio-user

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20609 discussions

[linux-audio-user] Re: Re: [Ardour-users] Re: [Alsa-devel] usb audio sound quality

by Paul Winkler

On Sun, Nov 10, 2002 at 02:10:25AM -0500, Paul wrote: > Paul Winkler <pw_lists(a)slinkp.com>, on Fri Nov 08, 2002 [05:47:56 PM] said: > > > > /me wishes there were a nice way to have multiple XF86Config's > > Well, you can. You can pass the XF86Config to use on the > command line to the server. If you use something like xdm, you Well, you learn something new every day :-} but I don't see how -- i've searched for "onfig" in the man pages for startx, xinit, X, and Xserver, and found nothing that suggests a command-line option to choose the config file. - Paul Winkler http://www.slinkp.com "Welcome to Muppet Labs, where the future is made - today!"

22 years, 5 months

[linux-audio-user] latency test problem

by anton

Hi, I want to measure the latency of my linux box before installing the low lat kernel. I found the latencytest0.42-png program. When compiling I get some warnings (see below) anton@stereocilia:~/latencytest0.42-png> make gcc -Wall -O2 -DUSE_PENTIUM_TIMER -c latencytest.c latencytest.c: In function `main': latencytest.c:156: warning: passing arg 2 of `signal' from incompatible pointer type latencytest.c:157: warning: passing arg 2 of `signal' from incompatible pointer type gcc -Wall -O2 -DUSE_PENTIUM_TIMER -c gfx.c gcc -o latencytest latencytest.o gfx.o -lm -lgd -lpng gcc -Wall -O2 -DUSE_PENTIUM_TIMER -c rtc_latencytest.c rtc_latencytest.c: In function `main': rtc_latencytest.c:142: warning: passing arg 2 of `signal' from incompatible pointer type rtc_latencytest.c:143: warning: passing arg 2 of `signal' from incompatible pointer type gcc -o rtc_latencytest rtc_latencytest.o gfx.o -lm -lgd -lpng Running ./do_tests gives me lots of errors: anton@stereocilia:~/latencytest0.42-png> ./do_tests mlockall() failed, exiting. mlock: Operation not permitted x11perf - X11 performance program, version 1.5 The XFree86 Project, Inc server version 40200000 on :0.0 from stereocilia Sun Nov 10 18:03:41 2002 Sync time adjustment is 0.1274 msecs. 20000 reps @ 0.4161 msec ( 2400.0/sec): Scroll 500x500 pixels [more output here] 1200 reps @ 5.9190 msec ( 169.0/sec): ShmPutImage 500x500 square [more output here] mv: cannot stat `out.png': No such file or directory mlockall() failed, exiting. mlock: Operation not permitted mv: cannot stat `out.png': No such file or directory mlockall() failed, exiting. mlock: Operation not permitted head: /dev/zero: invalid number of bytes mv: cannot stat `out.png': No such file or directory -rw-r--r-- 1 anton users 0 2002-11-10 18:05 tmpfile mlockall() failed, exiting. mlock: Operation not permitted mv: cannot stat `out.png': No such file or directory -rw-r--r-- 1 anton users 0 2002-11-10 18:05 tmpfile -rw-r--r-- 1 anton users 0 2002-11-10 18:05 tmpfile2 mlockall() failed, exiting. mlock: Operation not permitted -rw-r--r-- 1 anton users 0 2002-11-10 18:05 tmpfile -rw-r--r-- 1 anton users 0 2002-11-10 18:05 tmpfile2 mv: cannot stat `out.png': No such file or directory I am using Suse 8.1 with the default 2.4.19 kernel. It is probably something very stupid but I cannot figure out what. Any help would be appreciated. Regards Anton

22 years, 5 months

[linux-audio-user] [ANN] JACK Rack 1.0

by Bob Ham

Hi all, I just uploaded the first version of JACK Rack, a stereo LADSPA effects "rack" for JACK and GTK+ 2. Tarball is here: http://pkl.net/~node/software/jack-rack-1.0.tar.gz (96k) screenshot is here: http://pkl.net/~node/images/jack-rack-shot.png Enjoy :) Bob

22 years, 5 months

[linux-audio-user] rme96 + 8 ADAT channels eith ecasound ?

by Olaf Titel

Hi dear mailing list ? I have got one question. I'm using ALSA + digi96/8 PAD with an external ADAT (Korg 880D/A) I can play sounds on the device hw:0 (analog). I can also play sounds with the device hw:0,1 (ADAT) with ecasound and aplay and other software.But in the momment all the sounds are send to the first two ADAT-channels Is it possible to use all 8 channels with ecasound or jack ? Have I to send an 8 channel interleaved file or sterro files how? How does it work. Or have I to set up a special multichannel configuration in the .asoundrc file. Thank you. Olaf Titel -- olaf titel nassauische str.54 10717 berlin --

22 years, 5 months

RE: [linux-audio-user] Vsound is no more

by Joachim Backhaus

Hello, I found the old start page of vsound in the cache of google: http://www.google.de/search?q=cache:xGXl6EquXBwC:www.zip.com.au/~erikd/vsoun d/+%2Bvsound&hl=de&ie=UTF-8 If this will be deleted: I have made a local copy with mozilla which I can send to you if you are interested in it. Regards, Joachim

22 years, 5 months

[linux-audio-user] Outboard equipment

by Anahata

Until now, I have been using a MD 4 track for recording and my invovement with Lunux audio has been at stage of mastering the stereo mix and CD burning. However I'm beginning to appreciate the editing and multi track power of even a relatively simple package like audacity and considering using the PC and hard disk for more audio work. One of the sticking points is that I have an investment in some nice outboard gear - an FMR compressor and Lexicom MPX-200 reverb unit, and a mixer with swept mid EQ. What are my options for either (a) hooking the outboards to the PC (soundcard with lots ins and outs, possible latency issues) (b) Getting good EQ, reverb and compression all in software? (free software of course) I currently have a M-Audio DIO 2448, with 2 channel SPD/IF I/O System is a Duron 850, 384Mb, Debian 3.0 with 2.4.18 kernel -- Anahata anahata(a)treewind.co.uk -+- http://www.treewind.co.uk Home: 01638 720444 Mob: 07976 263827

22 years, 5 months

[linux-audio-user] Re: [Alsa-devel] usb audio sound quality

by Patrick Shirkey

Patrick Shirkey wrote: > I'm getting a lot of wierd sound quality bugs while using JACK. It seems > like the driver is storing the crappyness somewhere and each time I > access it the quality gets worse. Is it possible that the driver could > allow the data to linger and make things unstable? > > I have been doing some testing today with various softsynths and my mem > is getting pretty full. Turning off jack just freed up 10MB but still > it's at > > Mem: 386484K total, 336212K used, 50272K free, 41304K buffers > > The machine has been up for 7 hours. Is that reasonable? > > This is all done with tuned disks, lowlat and root access. Yesterday I was having this problem. I also tested the sound quality of native alsa vs jack by using two alsaplayers one connected to alsa and one connected to jack. While doing that I found that the output quality was exactly the same so I assumed that it was the alsadriver that was at fault. However After letting the machine and device cooldown while I slept and testing with native alsa today the sound quality is crystal clear. When I test through jack the quality is degraded. I assume that it is the demands that jack places on the system that is causing the quality to degrade. I have just gone down from 9 -> 6 screens in my virtual desktop and that seems to have gone a long way towards cleaning the sound. Any ideas on how I can tune x to give me those screens back? I currently use a geforce2 with nvidia drivers. I'm holding out on getting a new video card until the price of the new ATI has dropped. Does anyone know how the support for that card is going? -- Patrick Shirkey - Boost Hardware Ltd. For the discerning hardware connoisseur Http://www.boosthardware.com Http://www.djcj.org - The Linux Audio Users guide ======================================== Being on stage with the band in front of crowds shouting, "Get off! No! We want normal music!", I think that was more like acting than anything I've ever done. Goldie, 8 Nov, 2002 The Scotsman

22 years, 5 months

Re: [Re: [linux-audio-user] building the dream Linux music box]

by Kristofer Bergstrom

Thank you all so much for your input! The information is really appreciated. Sorry to be vague and lead us off onto mics (although that info too was much appreciated.) I'll be recording a wide range of things (taiko drums, stringed instruments, singing, found sound) so will eventually need a number of microphones. Right now I've only got a Shure SM57 due to lack of funds. Hopefully this will change. :) I'm glad to hear that people think a setup or something similar would do the trick. Brian brought up the Midiman soundcard, saying it's easy to setup. And I'm always happy to support companies who put a Penguin on their box. RME has been a little stand-offish. Does anyone have any thoughts about the Hammerfall card vs the Midiman card? It looks to me like the Hammerfall card is a little more high end but if you have an external AD/DA converter, maybe it doesn't matter? Maybe ease of setup is more important than the few extra bells and whistles? I'll admit that I don't know what a lot of the specs mean for either card. Paul Davis of Ardour fame strongly recommended the Hammerfall cards but listening to Brian's music at his homepage, it sounds like he's getting great results with the MidiMan setup he's using too. Here are some links I've found: http://www.rme-audio.de/english/hammer/index.htm http://www.midiman.com/products/m-audio/dio2496.php Anyway, any thoughts from Hammerfall and MidiMan users out there? Thanks again everyone! Kris Bergstrom P.S. Brian, are you the same Brian I met at the LA LUG meeting a few weeks ago? If so I've been trying to track down your e-mail. There aren't too many Linux DJs out there and I'd love to hear more of what you've been doing. ____________________________________________________________________

22 years, 5 months

[linux-audio-user] Midiman Portman 2x4 drivers?

by Christian Schoenebeck

Hi! Are there any drivers, no matter if OSS or ALSA for the Portman 2x4? The only thing I found on the web was that somebody posted to alsa-dev, that he almost has finished writing a driver for it. That was a year ago. But on the alsa matrix the device is marked grey and unfortunately the author's email address protected. Thanks in advance Christian

22 years, 5 months

[linux-audio-user] Recommendations for 24/96 digital I/O?

by Roger Williams

I'm looking for recommendations for reliable interface components for getting 8-channel AES/EBU input into Ardour for HDR. (I'll be using external A/D converters.) -- Roger Williams <raw(a)qux.com> Qux Tool & Die, Middleborough, Massachusetts // Omne tulit punctum qui misquit utile dulci //

22 years, 5 months

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Linux-audio-user