Linux-audio-user December 2004

linux-audio-user@lists.linuxaudio.org

186 participants
209 discussions

[linux-audio-user] Linux audio apps and Business workflow (from Midi app & Video app with SMPTE and/or MTC)

by Brad Fuller

> > >If I saved you two weeks aggravation in a business context, would you think >it was a valuable service? As in would that be an acceptable "cost of doing >business" type of expense, like say insurance, but it was offset by reduced >TCO as compared to proprietary systems. > > Saving 3 man hours is important to us. But, it would depend on what I saved and how much it cost me. For instance, if the 3 man hours were spent acquiring knowledge that I could potentially use later, I often spend the time to acquire this knowledge (of course, depending on the value of the knowledge.) If it's related to something that you are refering to (a feature that doesn't work -- a feature that doesn't work and looks like it'll never work, historical record of a system) then I try to stop asap and attempt to recoup the investment. brad

19 years, 4 months

[linux-audio-user] MIDI problems on latest alsa from Sid

by David Baron

Anyone having problems here. My devices no longer show up. Audio works fine. Note that 1. /proc/asound/cards shows ALL devices 2. cat /dev/midi# show events from the keyboard. The keyboard is through a USB driver. I get snd-usb-audio install error from modprobe on bootup. Attempt to rmmod say it is in use. However: Kmid shows no devices, neither does Rosegarden. Jackqtl has no active connections but show devices on it patchboard. Connections made here are "silent". Audio is working without a hitch.

19 years, 4 months

[linux-audio-user] Re: Tuning Program or wav files?

by thewade

> I\'m looking for wav files or a tuning program that would help me tune this > violin. If i had a wav file or a tone generator, I could just put it on > repeat while i was tuning. I\'ve been searching the web for an hour now and > have found nothing, but i may just be looking in the wrong places. PD has a object called fiddle~. You can run the mic into this and (among other things) gives you the midi note which correspond to keys on a keyboard. Or you can run to output into mtof if oyu preffer to see Hz. pd.iem.at Here is a layout. [adc~] | [fiddle~] | [ (midi note) > | [mtof] | [ (frequency in Hz) > Hope this helps! -thewade

19 years, 4 months

Re: [linux-audio-user] in tune - stupid thread [WAS: Tuning

by Bearcat M. Sandor

I appreciate all the suggestions. I can appreciate the fact that some think it is 'stupid' 'cause you should just tune it to what you like or what you need at the time. However, I'm tuning this violin to lean to play. Since I'm learning i want to be as close to a common tuning as i can, so that i learn the fingering correctly. Thanks all, Bearcat M. Sandor

19 years, 4 months

[linux-audio-user] Mediastation

by Janina Sajka

Is this device happening? Does anyone know the status? http://www.lionstracs.com/index.php?module=Static_Docs&func=view&f=/specs.h… Now that the Open Labs products are out, it would be nice to know the Mediastation is a going concern. -- Janina Sajka, Chair Accessibility Workgroup Free Standards Group (FSG) janina(a)freestandards.org Phone: +1 202.494.7040 If Linux doesn't solve your computing problem, you need a different problem.

19 years, 4 months

[linux-audio-user] [OT] Linux soundapps pages updated: Back In Black edition

by Dave Phillips

Greetings; Just in time for Xmas: http://linux-sound.org (USA) http://linuxsound.atnet.net (Europe) http://linuxsound.jp (Japan) Best regards, dp

19 years, 4 months

[linux-audio-user] [OT] soundapps site URL correction

by Dave Phillips

Greetings: Sorry, the correct European URL is: http://linuxsound.atnet.at Best, dp

19 years, 4 months

[linux-audio-user] Tascam US428 Continued hangups

by Spencer Russell

Hullo, A while ago I was having trouble with my US428 hanging my system, usually directly after I tried to start JACK. Then lots of school-type stuff came up, and I set it aside for a while, and just used the built-in soundcard. Now that finals are over, I'm looking at tryint to get it to work again. So I downloaded the 2.6.10-rc2 source, applied the mm3, usx2y-0.8.7, and rt2 patches, used make-kpkg to make a nice debian-friendly package, and installed the kernel and modules. I also got the realtime-lsm module, and the package that has the scripts to set it up all nice and easy. So I boot it up, and aside from my touchpad not working, everything looks good. So I tail -f /var/log/messages, and plug in my US428. It seems to load the firmware and start us428control the way it's supposed to, and I can even start jack and run the xmms-jack out plugin and listen to music through it. Seems to work great. But as soon as I start ardour, I get this: kernel: Sequence Error!(hcd_frame=1152ep=10out;wait=120,frame=124). kernel: Most propably some urb of usb-frame 120 is still missing. kernel: Cause could be too long delays in usb-hcd interrupt handling. and qjackctl up and disapears, and ardour gives an error about being booted by jack. but I'm pretty stoked at at least my computer didn't hang(as it used to), until I unplug the device, and do some other stuff, and then it hangs. So I guess I'm in a slightly better position than before, but I'm getting pretty close to selling this, and saving up for one of the RME pcmcia interfaces. thanks for any ideas, -spencer

19 years, 4 months

[linux-audio-user] Python or Perl for daily audio scripts?

by Christian Frisson

Heyall, About one year ago, I posted here about my intention to batch-slice the Musical Instrument Samples from the University of Iowa (http://theremin.music.uiowa.edu/MIS.html) in order to turn them into the first free orchestral multisampled instruments library (it ain't so proud as it seems). This has been quite a hard task for a newcomer like me, so I've decided to divide this work in progressive steps: in order to become more confident with scripting / programming, I first wrote a bash script to batch-uncompress another set of multisampled instruments, available freely from the Hollow Sun Studios (http://www.hollowsun.com/), and convert each map from Akai to rgc:audio's Sfz format (waiting for the next LinuxSampler native format ,-). Sfz runs both under Windows and Linux, by using either vstserver / vsti or fst / jack_fst, and works, even if it isn't freesoftware (...)! This script has been successfuly tested on my FC1 installation and on XP with Cygwin, even if the latter solution won't work with a single operation (needs rebooting): Cygwin still doesn't handle well RAM access (cannot fork...) and "for" loops aren't that optimized for sure. I'm not against giving a link to these early scripts, but I thought it was better to wait for the next version. As I'm a little picky on filenames aesthetics, my next step is to translate this script into another language, in order to be able to parse HTML files to get proper filenames included therein. I've been hesitating between Perl and Python (as Frank Barknecht advised me before), because both are multi-platform and can handle audio files, as required for the final project. Which one would best suit? I've been programming easy student software in C/C++, if it can help. Cheers, Christian

19 years, 4 months

[linux-audio-user] [JACK Fwd: strange-difficult to explain BUG]

by MarC

I posted that message to the JACK list. Anybody has the same problem? sbdy at the JACK list said that it disappeared with kernel 2.6.10... I have not tried this (I'll wait for the package) but I find it strange. -------- Missatge original -------- Assumpte: strange-difficult to explain BUG Data: Sun, 19 Dec 2004 17:14:24 +0100 De: Respon a: A: jackit-devel(a)lists.sourceforge.net >I first though it was Ardour but then I realised that I could reproduce it under XMMS with the jack plugin.... When running jackd and using audio applications, after some time (for example 5minutes but not always the same time), I start listening a strange noise added to the music, then it stops, it comes again later but after a lot of time and like this until the end of the world. >I have recorded this noise, recording the PCM output. you can download it under the following link: http://www.upcnet.es/~mvr9/proves/jack_bug.ogg >note that the noise is not additive, it distorsionates the music (during the silence between tracks you cannot listen it, even if it started already in the previous track) When I hear the noise, if I switch to the ALSA plugin, I can hear the music OK; but if I switch again to jack it the noise continues. The noise stops spontaneously after some time (1minute?) independently of the fact that I listen to music or I don't play anything. When the noise stops Jack displays in the message window: "**** alsa_pcm: xrun of at least 0.058 msecs". This is normal????? >Here there are some specs of my system: I am running the last version of jackd under Debian testing: 0.99.0-2 with parameters (through qjackctl): /usr/bin/jackd -R -p60 -t5000 -dalsa -dhw:0 -r44100 -p512 -n2 -S -i1 -o2 (short latency: 23.2ms) with an audigy card, with a kernel 2.6.8 + realtime module my fstab is the following one: maybe this explains why I am the only one (i didn't hear of anyone) complaining about this bug? sh-2.05b$ more /etc/fstab # /etc/fstab: static file system information. # # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc defaults 0 0 /dev/sda8 none swap sw 0 0 /dev/sda5 / ext3 defaults,errors=remount-ro 0 1 /dev/sda6 /home ext3 defaults 0 2 /dev/sda2 /winsegur vfat rw,user,exec,codepage=850,umask=000 0 0 /dev/sda1 /winxp vfat rw,user,exec,codepage=850,umask=000 0 0 /dev/hda /media/cdrom0 auto ro,user,noauto 0 0 /dev/hdc /media/cdrom1 auto ro,user,noauto 0 0 /dev/fd0 /media/floppy0 auto rw,user,noauto 0 0 /dev/sdb1 /marc vfat rw,user,exec,noauto,codepage=850,umask=0 00 0 0 /dev/sdb2 /home/marc ext3 noauto,user,exec 0 0 /dev/sdc1 /media/usb0 vfat rw,user,exec,noauto,codepage=850,umask=0 00 0 0 >It's quite annoying because this stops me to use Ardour to play live music... Anyone that can help me? P.D: the music is from the album Wave of Antonio Carlos Jobim :)

19 years, 4 months

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Linux-audio-user December 2004