Linux-audio-user March 2004

linux-audio-user@lists.linuxaudio.org

138 participants
168 discussions

Re: [linux-audio-user] couple of muse questions

by Andreas Andersson

>From: James Stone <stone1(a)btinternet.com> > > > Secondly when starting muse as a normal user I get: > > > cannot open rtc clock /dev/rtc: Permission denied > > > how can I change the permission permanently? > > > kernel 2.6 with realtime.0.04 > > > > Don't know about 2.6 kernels. Have you tried setting muse suid root? I >assume > > you are launching as muse -R (?) > > > >What does muse -R do? I just run it as muse, and connect to jack. Not >sure what the realtime option does, just hangs on my computer.. unless I >change muse to suid (which is not necessary if it has been compiled with >rtcap). Don't worry about the kernel version. makes no difference. I have the same experience. rtcap enabled, no difference between kernel versions. I don't use the realtime module but the kernel hack. Works well with Jack and everything else. /AA _________________________________________________________________ MSN 8 with e-mail virus protection service: 2 months FREE* http://join.msn.com/?page=features/virus

21 years

[linux-audio-user] Re : Poor SN ratio with high quality sound

by Mirouf Linux

>Gentlemen: > >I follow this list from the digest, so I could have >missed a critical >post. If >so, please point me to the thread. > >I have two PCs I use almost exclusively for sound >editing (with ReZound >--- >highly recommended for its crossfade ability). I >record classical music >on an >Alesis MasterLink at 96kHz/24 bits, so I have quite a >SN ratio to begin >with. >I need to edit the gaps between tracks where I want to >preserve the >hall >ambience. Whether I use an RME Digi96 PAD or an >M-Audio Delta 44, the >signal >I get out of the sound editor is so low that I hear a >lot of hum and >other >extraneous noise by the time I crank my amplifier's >volume up enough to >hear >what is between the pieces. This noise is _not_ there >when I burn a >CD-R, >however. > >I assume this means I need to send a digital signal >(preferably 96/24 >and >lower) to an external DAC before sending the signal to >my monitoring >system. >Would someone be kind enough to explain how to get a >signal out of a PC >that >is fully equivalent in S/N to the CD-Rs the computer >can burn? You just have to get out a 16 bit 44,1khz signal, just like on a cd. There is no use for you to have a 24/96 signal for monitoring and wondering all the time if it would be the same on the CD... And I'm wondering if it possible to get a 24/96 signal out with the RME... If you wanna get digital out of the RME, you've got nothing to do, just plug the little cable converter on the sub-d connector ont the board, and play music, the monitoring stream is copy on the digital out by the board. I don't know about the delta 44... Bye François > >Many thanks, > >John Yahoo! Mail : votre e-mail personnel et gratuit qui vous suit partout ! Créez votre Yahoo! Mail sur http://fr.benefits.yahoo.com/ Dialoguez en direct avec vos amis grâce à Yahoo! Messenger !Téléchargez Yahoo! Messenger sur http://fr.messenger.yahoo.com

21 years

[linux-audio-user] [ANN] vsti v0.0.3

by Kjetil Svalastog Matheussen

http://www.notam02.no/arkiv/src/ SHORT DESCRIPTION Run a vsti plugin as a jack and alsa-seq client. HISTORY 0.0.2 -> 0.0.3 -Fixed stupid vsti init bug. Don't use v0.0.2, as it probably won't work. (Sorry) --

21 years

RE: [linux-audio-user] [NYC local] The Technology Initiative at F lux Factory

by Polashek, Matthew

What sort of technical expertise will be on hand? Is this for basic users or will there e people there who have installed Multifaces on laptops? Matthew Polashek Associate Editor, Silver Burdett Ginn - Music Scott Foresman/Pearson Education 299 Jefferson Road Parsippany, NJ 07054-0480 office: 973.739.8709 fax: 973.739.8098 Matthew.Polashek(a)scottforesman.com > ---------- > From: Marco Scoffier > Reply To: A list for linux audio users > Sent: Tuesday, March 23, 2004 8:57 AM > To: linux-audio-user(a)music.columbia.edu > Subject: [linux-audio-user] [NYC local] The Technology Initiative at > Flux Factory > > Hello, > > Flux factory in Queens, NY is hosting an installfest which will have a > focus on getting artists up and running with audio software on linux. > If anyone one on the list wants to come and help out you will be more > than welcome. There is much interest in Ardour and in Pd. > > Also, if anyone has a cool demo, we have a projector and a PA for > discussing some of the possibilities of Free Software audio, and I would > be more than happy to share the stage with someone. > > Of course if you need help getting something installed, > then come on down. > > -- > Marco > > ---------- > > Here is the announcement flux sent out last week: > > The Technology Initiative @ fluxfactory.org > http://www.fluxfactory.org/work.htm > > Sunday, March 28th 2-6pm - Install Fest & Linux Audio > For those who've always wanted linux running on their computers, but > never dared to install it alone. This is a great opportunity to learn > the basics and get started on how to improve your life with free > software! Marco Scoffier will also demonstrate using audio in a linux > based environment, covering certain programs. Bring your laptops, even > desktops (backup your files first!). > > Flux Factory is in Queens NY. > Detailed directions and a map can be found here: > http://www.fluxfactory.org/how.htm > > > > **************************************************************************** This email may contain confidential material. If you were not an intended recipient, please notify the sender and delete all copies. We may monitor email to and from our network. ****************************************************************************

21 years

[linux-audio-user] midi module for i810

by Seunghyun. Cho

Hi, When I turn on kguitar, there is an error message that kguitar doesn't get the midi device. My sound chip is i810. Which module should I compile in kernel for midi use? And I am using fujitsu s4542 and gentoo linux with kernel 2.6.4. Is anybody using s4542? help... :)

21 years

[linux-audio-user] The trouble with disks, part II

by John Anderson

Or should that be part III? I can't remember. Whatever. Let the saga continue. Several months ago, I posted here about my xrun problem. A brief refresher: MSI K7N2Delta mobo, Athlon XP2200+, 1Gb RAM, Adaptec 29160, Fujitsu 36Gb (MAN3367MP), Terratec EWS88MT, Matrox G550, linux-2.4.18-22, 2.6.[0-4]. With the invaluable help of various denizens of this list, I went through the list of possibilities from irq priorities to kernel patches to jack compile flags. Eventually somebody found an article about problems with the Adaptec 2940, and suggested I try an IDE drive. Which was about the only thing I hadn't done. In the meantime I've moved house, cut my hair, set a date for my wedding and bought a car. So it being a time for major life changes, today I went and bought an IDE drive - Seagate Barracuda 40Gb (ST340014A). Ordinary off-the-shelf nothing special. Not even serial-ata. Walked into a shop and said "Hello, I need to buy a 40Gb IDE drive". Walked out 10 minutes later. Previously I couldn't even run at -n 2 -p 1024 without a glitch every few seconds, unless I preloaded the .wav files for the ardour session to get them in cache. With the audio data (reiserfs) and the swap partition on the IDE drive I'm running jack at -n 2 -p 128 with ardour and 6-10 tracks and not an xrun in sight. I can play an *entire* session and not one xrun shows up. Woohoo! linux-2.6.3-mm2 FWIW, although jack got unhappy and kicked ardour off the graph when I added jamin and bounced the cpu to 75%. Not entirely unexpectedly. What burns is that I bought the SCSI setup specifically for audio. Could've saved quite a bit of money. Ah well. Maybe I can sell it or something. I spose I could try to get hold of a non-Adaptec SCSI controller, but it seems like more hassle than it's worth. Oh, and some hard performance numbers, disc0 is SCSI, disc1 is IDE: bash-2.05b# hdparm -Tt /dev/discs/disc0/disc /dev/discs/disc0/disc: Timing buffer-cache reads: 128 MB in 0.34 seconds =375.42 MB/sec Timing buffered disk reads: 64 MB in 1.31 seconds = 48.75 MB/sec bash-2.05b# hdparm -Tt /dev/discs/disc1/disc /dev/discs/disc1/disc: Timing buffer-cache reads: 128 MB in 0.35 seconds =364.73 MB/sec Timing buffered disk reads: 64 MB in 1.14 seconds = 56.05 MB/sec bye John

21 years

[linux-audio-user] RE: Live audio sampler

by Hawkeye Parker

have you looked at simsam? very straightforward: http://simsam.sourceforge.net/ > Me: > > Just wondering if anyone has any recommendations for a piece of > > software that I can play samples from, as simple interface-wise as > > possible. > > Sampo: > > How about specimen? > > http://www.gazuga.net/ > > Thanks Sampo > > Even Specimen is a bit overly complicated, I literally want to be able > to trigger samples whilst playing keyboards etc if that makes sense. > I've created somthing similar in VB for Windows, which is basically a > grid of buttons, each one linked to a sound file, configurable by an > ini file I keep with the executable. Obviously I'd like to do > something similar under Linux. > > www.southlondonlive.org > www.onionjack.com

21 years

Re: [linux-audio-user] [ANN] vsti v0.0.2

by Kjetil Svalastog Matheussen

Chris Cannam: > On Tuesday 23 Mar 2004 3:40 pm, Robert Jonsson wrote: > > On Tuesday 23 March 2004 16.34, Kjetil Svalastog Matheussen wrote: > > > [...] No need for a screen-shot; Same look as in windows. > > > > You can never have enough screenshots, for some strange reason... > > I agree it's pointless -- you'd just be getting a screenshot of > someone else's VST plugin. > > Still, in the spirit of such pointlessness, here are two VSTis running > on Linux: > > http://www.all-day-breakfast.com/rosegarden/tmp/vsts1.png > > This actually isn't using Kjetil's code, but I bet it would look > exactly the same... > What!? :) What programs are you using? I see you are not using the vstserver since the window-titles aren't "Vstserve". --

21 years

[linux-audio-user] External DAC for mastering use?

by Daniel James

Hello all, I'm setting up a system to use for mastering stereo output with Jamin (I have a lot to learn...) Has anyone tried using a motherboard S/PDIF output with an external DAC designed for hi-fi use, such as a Musical Fidelity unit? I'm guessing that the analogue hardware would be much better than you find on a typical PCI card, but the limitations would be that the system would have no analogue input, and would probably be limited to 44.1/16 bit, since these units were designed for CD players. Any thoughts? Cheers Daniel

21 years

Re: [linux-audio-user] midisport2x2 [WAS m-audio / midiman / oxygen8 USB MIDI?]

by Martin Habets

> after: > > rmmod usb-midi > modprobe snd-usb-midi > > lsmod reports: > > root 19:16:02> lsmod > Module Size Used by Not tainted > snd-usb-audio 47232 0 (unused) > snd-hdsp 41292 0 > snd-hwdep 5472 0 [snd-hdsp] > snd-intel8x0 20388 0 > snd-ac97-codec 49388 0 [snd-intel8x0] > snd-mpu401-uart 4304 0 [snd-intel8x0] > ohci1394 27272 0 (unused) > ieee1394 52292 0 [ohci1394] > snd-rawmidi 15552 0 (autoclean) [snd-usb-audio snd-hdsp > snd-mpu401-uart] > snd-seq-device 4452 0 (autoclean) [snd-rawmidi] > snd-pcm 69088 0 (autoclean) [snd-usb-audio snd-hdsp > snd-intel8x0] > snd-page-alloc 7380 0 (autoclean) [snd-hdsp snd-intel8x0 > snd-pcm] > snd-timer 17380 0 (autoclean) [snd-pcm] > snd 37252 0 (autoclean) [snd-usb-audio snd-hdsp > snd-hwdep snd-intel8x0 snd-ac97-codec snd-mpu401-uart snd-rawmidi > snd-seq-device snd-pcm snd-timer] > soundcore 4548 4 (autoclean) [snd] Looks good. I also have usbcore loaded (using snd-usb-audio), not sure if that is relevant. Maybe try loading usbcore before you plug in the midisport? > and the log reports the same when plugging in the 2x2: > > Mar 22 19:14:08 umatic1 hub.c: new USB device 00:1d.0-1, assigned address 36 > Mar 22 19:14:08 umatic1 usb.c: USB device 36 (vend/prod 0x763/0x1001) is > not claimed by any active driver. > Mar 22 19:14:11 umatic1 /etc/hotplug/usb/ezusbmidi: load > /usr/share/usb/ezusbmidi/ezusbmidi2x2.ihx for 763/1001/1 to OK, nearly there! I think your midisport 2x2 is missing from modules.usbmap. Go to /lib/modules/`uname -r`/ and grep 763 modules.usbmap. You'll probably won't have a line for 0x1001 (in the 4th column). You can add it here. Best copy one of the other lines, like snd-usb-audio 0x0083 0x0763 0x1002 0x0000 0x0000 0x00 0x00 0x00 0xff 0x00 0x00 0x0 Take care with the tabs! (I moused this one in). I'm on a 2.6 kernel here, but I don't think this was different in 2.4. FYI, myself I use some slightly different tools from http://usb-midi-fw.sf.net. Look like you can also create /etc/hotplug/usb/midisport_fw.usermap with: midisport_fw 0x0003 0x0763 0x1001 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 in it (no tabs here). If that all doesn't do it, it must be related to usbcore. My modules.dep has: /lib/modules/2.6.3-mph1/kernel/sound/usb/snd-usb-audio.ko: /lib/modules/2.6.3-mph1/kernel/drivers/usb/core/usbcore.ko /lib/modules/2.6.3-mph1/kernel/sound/core/snd-rawmidi.ko /lib/modules/2.6.3-mph1/kernel/sound/core/seq/snd-seq-device.ko /lib/modules/2.6.3-mph1/kernel/sound/core/snd-pcm.ko /lib/modules/2.6.3-mph1/kernel/sound/core/snd-page-alloc.ko /lib/modules/2.6.3-mph1/kernel/sound/core/snd-timer.ko But that could very well be different in 2.4. Martin

21 years

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Linux-audio-user March 2004