Linux-audio-user May 2004

linux-audio-user@lists.linuxaudio.org

154 participants
165 discussions

by Bryan Jurish

On 26 May 2004 at 12:00:51, Ryan appears to have written: > On Wed, 2004-05-26 at 07:35, Chris Share wrote: [snip] > > My second question concerns audio hardware. Here at the SARC I have > > access to a Digi 002r audio/MIDI interface which uses Firewire. I can't > > find any information about this interface and was wondering if it was > > possible to use it with Linux. > > Possible... anything is. Likely/easy certainly not. M-audio for > low-end cheaper, RME for high end spensive. i know nothing about firewire audio under linux, but my (unsolicited) advice is to stay away from m-audio : their usb devices Just Plain Don't Work under kernel 2.6, and the company has no plans to actively support linux themselves... bummer for me as someone who bought a Quattro, but maybe it'll save someone else some headaches... marmosets, Bryan

20 years, 7 months

[linux-audio-user] A bit of good news

by Ivica Ico Bukvic

Hi all, Just found out that I will be presenting a paper titled "Linux as a Mature Digital Audio Workstation in Academic Electroacoustic Studios - Is Linux Ready for Prime Time?" at the upcoming ICMC2004 (International Computer Music Conference) this fall. Although I have only 3 more days to do final editing for the camera-ready paper :-(, if you have any ideas or thoughts for additions to the paper I will certainly read through them and try to add them (if they are not already included). I will be also posting a preliminary draft as soon as it exits the realm of "ugly" ;-) Best wishes, Ivica Ico Bukvic, composer & multimedia sculptor http://meowing.ccm.uc.edu/~ico/

20 years, 7 months

[linux-audio-user] XRuns with the Audiophile 24/96 M-Audio

by Remi Bernhard

Hello, I read a lot a great thing about the audiophile 24/96 on the net, and i decided to buy it to get better latency than my old sblive! I just received the audiophile 24/96 and unfortunatly, i have a lot of XRuns with when i run jackd. I already tried the following : - i changed irq (several changes : irq5, then irq 10) - Disable nearly all the inboard harware (serial port, parallel port, usb) - i changed the Pci port - i tried to run jackd as root - i even tried to raise buffer at big values : 512, 1024, and even there i have some (1 or 2) xruns - i'm now trying with kernel 2.6.6 to see if things are better Hardware : MSI K7N2Delta MB Athlon 2400 Nvidia Geforce 4mmx Audiophile 24/96 M-Audio Sofware : Debian/Testing Kernel 2.6.5 Alsa 1.0.4rc2 Realtime-Lsm 0.1.0 Do you have ideas, before i return the card to the shop ? Regards, Rémi Bernhard.

20 years, 7 months

[linux-audio-user] [ANN] Specimen 0.2.9 Released ("I'm Not Dead Yet")

by Pete Bessman

Howdy folks! The newest version of Specimen is available for immediate download from www.gazuga.net (direct: http://www.gazuga.net/specimen-0.2.9.tar.gz). Features include: * A piano for graphically asigning note ranges * A very happenin' bank building interface that uses an embedded File Chooser (gtk+-2.4 required for this) * LASH/LADCCA support * Extensive repairs, most notably to the waveform display (it's alias- free) and the panning code (it works). * A completely revamped audio rendering system * Sundry cleanups and fixes Many thanks to Loki Davison, the new and official co-developer, for his fabulous contributions to this release, and for bitch-slapping me into getting back to work on this code (rather than piddling around with vaporware). Stay tuned for more... [pb] -- "The direct use of physical force is so poor a solution to the problem of limited resources that it is only employed commonly by small children and great nations." --David D. Friedman

20 years, 7 months

[linux-audio-user] Thanks all!

by Ivica Ico Bukvic

Big thanks to all who helped me iron out the inconsistencies in my paper. I will be sending the final draft shortly and posting the online version during the conference this upcoming November. Best wishes, Ivica Ico Bukvic, composer & multimedia sculptor http://meowing.ccm.uc.edu/~ico/

20 years, 7 months

[linux-audio-user] Making the plunge...

by Them

Hi, I'm new here, a longtime Linux user but new to high-end Linux audio. I am making the plunge to migrate my home studio completely to Linux. I have a couple of VST plugins that I've been using with Cakewalk -- notably the M-Tron Mellotron softsynth that I will be sad over if I have to leave it behind. Is there any way yet to use adapt VST plugins to Linux audio software? Via Wine, maybe? -- Brett

20 years, 7 months

Re: [linux-audio-user] Any instructions about for running a Win VSTi under vstserver

by Kjetil Svalastog Matheussen

James Stone: > > > > You probably want "vsti" from Kjetil Matheussen (using vstserver) or > > "jack_fst" from Paul Davis and Torben Hohn (using libfst). Either of > > these will run a VSTi with GUI as a standalone JACK/ALSA app that can > > then be driven as an ALSA sequencer client from a MIDI source. > > > > You can get vsti at http://www.notam02.no/arkiv/src/, or jack_fst at > > http://linuxaudiosystems.com/fst/ . I have never tried vsti, but I > > have used both vstserver-for-plugins and jack_fst with good results. > > > > > > Chris > > I use vsti for auditioning vsts but I find that the k_vst~ plugin for pd > offers more functionality, and also is accessible from seq24 (which is > not the case with vsti). The vsti program implements a standard alsa sequencer (just as the jack_fst program, which infact use the code from vsti (which again use the code from jack-rack :))), so it is definitely possible to get access from seq24. Just use aconnect, kaconnect, qjackctl or something to connect the vsti instrument and seq24. Infact, it should be much simpler than from pd. I think one of us must have misunderstood something here. --

20 years, 7 months

[linux-audio-user] declipper

by R Parker

Hi, I'm doing some more mastering. A couple of the songs have spikes, short duration but high signal level. Compression fails to hold these signals in place. I could tweak the compressor but when results aren't achieved quickly I look for another tool. Can SWH or anyone else explain what the Declipper does? In a moment of genius I began to suspect that it declips. Dah! I guess a definition of clip and an example for where this plugin is useful would be helpful. I've post fader and in front of the compressor inserted the declipper. In my test track, it doesn't appear to be doing anything. It's likely the spikes are not clips. However, the level of the spikes is probably +6.0dbfs hotter than the average level. If these spikes aren't clips, maybe I can normalize and close the level gap between the spikes and the average signal. I'll try that but suspect it won't do the job. Is there a different tool that can be used to control these spikes? Perhaps a despiker. :) ron __________________________________ Do you Yahoo!? Friends. Fun. Try the all-new Yahoo! Messenger. http://messenger.yahoo.com/

20 years, 7 months

Re: [linux-audio-user] Ardour, Jack, and 2.6 kernels

by mark62756＠comcast.net

interesting. i bet it is probably a untune IDE driver. i shall try the data=writeback mode out this weekend if i figure out how. :) -- Marko Dimiskovski > > > As an aside, Ardour does have "native raid" which > > doesn't have the computational overhead of kernel > > supported raid. > > I can't imagine that he's suffering from THROUGHPUT issues. RAID doesn't > improve latency, for this sort of application. RAID's good for when you > need higher throughput, and even 8 channels of 16-bit/44.1K audio is very > low in throughput for modern drives. > > > Perhaps it would be useful for systems > > that have drive related performance issues. > > With a 400ms latency, I highly doubt this is his problem especially since > using the 2.6 kernel makes that alot better. It's either an untuned IDE > driver (2.6 may have a better chipset tuning setup automatically), or a > filesystem-related problem. (Try data=writeback mode if using ext3). > > A 2.4.2x-preemptible kernel with low-latency engaged and a tuned IDE driver > with ext3 in writeback mode, or reiserfs should definitely get you JOY with > audio latency. > > Make sure you compile in support for IDE chipsets (VIA, SiS, Intel, etc), so > Linux can best tune/adjust transfer modes and DMA timings for optimal > results. Many stock distribution kernels just include generic support. > > =MB= > -- > A focus on Quality. >

20 years, 7 months

[linux-audio-user] jack_fst segfault

by Carl Hetherington

Hi, I'm having problems with jack_fst. On trying to load any VSTi, I get a segfault with the following backtrace: #0 0x406132cb in __errno_location () from /lib/libpthread.so.0 #1 0x40735be3 in ioctl () from /lib/libc.so.6 #2 0x40b30275 in DOSFS_OpenDir (unix_path=0x40d1f024 "/") at ../../files/dos_fs.c:584 #3 0x40b30a6f in DOSFS_FindUnixName (path=0x40d1f024, name=0x409e0926, long_buf=0x40d1f025 "", long_len=1023, short_buf=0x40d1f42a) at ../../files/dos_fs.c:769 #4 0x40b315e9 in DOSFS_GetFullName (name=0x409e0926, check_last=1, full=0x40d1f024) at ../../files/dos_fs.c:1071 #5 0x40b35fe3 in CreateFileW (filename=0x409e0920, access=0, sharing=3, sa=0x0, creation=3, attributes=0, template=0x0) at ../../files/file.c:401 #6 0x409a3958 in RtlDoesFileExists_U (file_name=0x409e0920) at path.c:75 #7 0x409a40f2 in RtlDosSearchPath_U (paths=0x409e0668, search=0x40d1fdfc, ext=0x0, buffer_size=64, buffer=0x40d1fd60, file_part=0x40d1fcf8) at path.c:302 #8 0x4099f1bb in find_dll_file (load_path=0x409e0668, libname=0x40d1fdfc, filename=0x40d1fd60, size=0x40d1fd58, pwm=0x40d1fdf8, handle=0x40d1fd5c) at loader.c:1320 #9 0x4099f269 in load_dll (load_path=0x409e0668, libname=0x40d1fdfc, flags=0, pwm=0x40d1fdf8) at loader.c:1404 #10 0x4099d024 in import_dll (module=0x40430000, descr=0x404371a0, load_path=0x409e0668) at loader.c:352 #11 0x4099d507 in fixup_imports (wm=0x409e0870, load_path=0x409e0668) at loader.c:479 #12 0x409a006d in LdrInitializeThunk (main_file=0x0, unknown2=0, unknown3=0, unknown4=0) at loader.c:1867 #13 0x40b6fe1d in start_process (arg=0x0) at process.c:751 Can anyone suggest anything? I've tried it with wine versions 20040309 and 20040505. Thanks Carl

20 years, 7 months

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Linux-audio-user May 2004