Linux-audio-user November 2006

linux-audio-user@lists.linuxaudio.org

152 participants
150 discussions

by Kjetil S. Matheussen

carmen: >> What is not working properly with jack in Snd and Snd-ls? > > nothing :) ive experienced some stability (crash/freezeup) issues which > tend to spread to jackd, however. given how fast the updates are coming, > i should try again, my version is a few weeks old. to be fair, > mhwaveedit carshes when exporting to mp3. Yeah, I have experienced those crashes too. But I think it is because it runs out of memory, which doesn't work very well with jacks memory-locking policy. For snd, this problem is solved very easely by just calling memunlockall, but that shouldn't be done when running the realtime extension (and manually locking used memory is not very doable), so its a quite unsolvable problem. (Well, you could buy more memory, or snd+guile could be reprogrammed to use less memory, or the linux kernel could be more gentle with its killing-policy.)

19 years, 1 month

[linux-audio-user] New A/V Workstation

by Joseph M. Gaffney

All, Very shortly I plan on building out my new workstation, specifically for audio and video editing and production. Might do some music, but mostly speech content on the audio side of things. The video will be mostly video of presentations, but may be some more intensive items. Here's the basic idea right now: 4U Rack Mount Case - From New Egg, like $70-$80. Intel Mobo - Not sure which one, anything with a decent amount of PCI slots available I suppose Intel Proc - I'm probably going to go for a Core 2 Duo I suppose. Best I can afford. Ram - 2GB or greater, Crucial or some such Hard drives - SATA, atleast 3, 2 of which would be mirrored (data drive). Looking at 250GB or greater for those. Audio Card - M-Audio Delta 66 most likely, but possibly the 1010 if I can swing it. Audio Hardware - I've got an AT849 boundary mic, a few SM57's, etc., which will be going through an ART TPS II mic pre. That should cover me on audio, whether I'm doing speech, or mic'ing up the piano, etc. Video Card - Having a bit of an issue here. I'm borderline zealot, and REALLY want to stick with Intel here due to their pledge of open source drivers... but it seems to me that noone is making an intel based standalone video card anymore - only on the mobo. Display - I'd like to stick to CRT for color correction issues, but I do worry a bit about any noise because of a CRT monitor. Also, since my intent is to go widescreen... I dunno. Maybe I should just go LCD from the start. Video Hardware - I've got a canon elura 1-chip minidv camcorder, a sony 3 chip with horrible audio, and access to recordings from the new canon hdv camcorder. Plus whatever else I get my hands on through work :) Control Surface - I'd LOVE to be able to use something like the new TASCAM FW-1082, but I have no idea how well any control surfaces work with Linux. Software-wise, I'm a KDE guy, but I'll probably be using Ardour, jack, Cinellera/Kino, so on. I don't know how KDENLiVES is working nowadays, I'll have to test it out. Probably use Kubuntu, though I might go the Gentoo route. So anyone have any recommendations for me? Better heat sinks to reduce fan noise, mobo, vid card, etc? Know a control system that works nicely? I've been through most of the FAQ's and such, just looking for input from the general user community :) Thanks, -Joseph M. Gaffney aka CuCullin

19 years, 1 month

[linux-audio-user] Trying to compile VST support in Ardour

by Tim Howard

Hello, I have compiled fst 1.8 (correctly, I think), and now I'm trying to recompile Ardour 0.99.2 with VST support. These are the errors I'm getting: [root@localhost ardour-0.99.2]# scons VST=1 VSTPATH=/usr/local/bin scons: Reading SConscript files ... Package libfst was not found in the pkg-config search path. Perhaps you should add the directory containing `libfst.pc' to the PKG_CONFIG_PATH environment variable No package 'libfst' found ... In the documentation for fst on Joe Button's site, it says: 5) Optional: To build Ardour 0.99.x with FST support : Copy the SC* files from the Ardour directory into your Ardour build path, then compile Ardour with these options : scons VST=1 VSTPATH=/path/to/compiled/fst I have copied fst and fst.exe.so to /usr/local/bin, and as far as I can tell, fst works perfectly by itself. What is going on here? Should libfst have been created, or is Ardour looking for something from an outdated version of fst? Any help would be much appreciated! -TimH

19 years, 1 month

[linux-audio-user] Struggling with jack_convolve

by Stuart Allie

Hi all, I've just started playing with jack_convolve and I'm having a few problems. If I run the program with the default gain factor (1.0) and a room-type impulse, the output is horribly clipped - it clips on even a small input signal. In order to get a clean output, I have to reduce the gain to something like 0.01. Is that normal/expected behaviour? It seems odd that the default gain would be 1.0 if a useful value is around 0.01... For the record, I tried a bunch of different impulses from noisevault.com, all giving the same result. Cheers, Stuart ------------------------------------- allie.opensrc.org stuart _dot_ allie _AT_ (gee)mail.com -------------------------------------

19 years, 1 month

[linux-audio-user] Radio Interference problems when recording

by jmacdermott＠dopd.com

This is a bit OT, but since I do all my recording on Linux machines, I thought I'd see if anyone on the list can help... I used to do all my recording in a basement, but since we've moved I got a new computer setup in our finished attic. 64studio is loaded on it (and works GREAT out of the box on my HP Athlon 64), and everything was working tickety-boo, audio running in and out of my M-Audio 1010LT via an old, beat-up, road-weary 16-channel mixing panel. This basic setup (different computer and distro, same sound card, cables, mics, etc.) was working fine at the old place in the basement. But now when I plug my mics (ie: Shure SM58) via XLR into the panel, I hear a LOT of radio interference. I never used to get any of this. My first thought is that the location (way up in the air) is what is causing it. I already tried the cheapest/quickest/easiest fix, new cables. That made no change. I will try plugging the unit into another outlet and see if that helps. I have the following questions for the more experienced readers on the list: 1) Could it be my beat-up old board? Does a newer, better board (ie: modern Mackie, etc.) have fewer problems with RF? (I know it would be quieter!) 2) I'm afraid that the RF might be coming through the power lines. Any tips on eliminating this? 3) Is the location of my equipment (3rd storey attic) an issue? Any way around this without shielding the entire roof? :-P Thanks for any help! Jay

19 years, 1 month

[linux-audio-user] DeMudi

by st

I am going to put either Fedora Core, or AGNULA on a laptop that will be used for recording sound. Any comments? Thanks, Toby

19 years, 1 month

[linux-audio-user] Lionstracs

by Greg Wilder

Many contributors to this list have been involved with the linux-based Lionstracs products, and recently I was very fortunate to find one in the US through ebay. My thoughts? WOW and WOW. These machines are killer! I you're new to the list and don't already know about them, check 'em out: http://www.lionstracs.com/store/ Amazing.

19 years, 1 month

[linux-audio-user] [ANN] Vmwaredspjack 1.3, Snd-ls 0.9.7.6 and Jack_capture V0.3.8

by Kjetil S. Matheussen

Vmwaredspjack ============= This is the vmwaredsp program, made by Petr Vandrovec, which makes vmware work with esd or arts. This version adds jack support as well. (Unfortunately, jacklaunch (which is a similar program) doesn't work with vmware, but I think Gunter is working on it... :-) .) The program isn't always working that well, but if used with care (don't trust the output too much) and proper tuning, you can use professional windows audio software in vmware using jack for audio communication. Download from http://www.notam02.no/arkiv/src/ Snd-ls v0.9.7.6 =============== Snd-ls is a distribution of Bill Schottstaedt's sound editor SND. Its target is people that don't know scheme very well, and don't want to spend too much time configuring Snd. It can also serve as a quick introduction to Snd and how it can be set up. Changes 0.9.7.1 -> 0.9.7.6: --------------------------- -Proper debug output in case startup fails. -Fixed bug in jack audio. -Temporary remove the fft menu because its not working with the 26.9.2006 version of Snd. Bug found by Dragan Noveski. -Check for the existence of the sndfile.h header file before compiling. If it doesn't exist, snd-ls will refuse to run. Problem reported by Krzusztof Gawlas. -Make sure snd starts up even if no file was loaded during startup. Bug found by Dragan Noveski. -Really apply the workaround for the menu problem. Download from http://www.notam02.no/arkiv/src/snd/ Jack_capture V0.3.8 =================== jack_capture is a small program to capture whatever sound is going out to your speakers into a file. This is the program I always wanted to have for jack, but no one made. So here it is. Changes 0.3.7 -> 0.3.8: ----------------------- *Added the --recording-time option to stop recording after a certain number of seconds. *Quitting with CTRL-C/SIGINT writes remaining buffer to disk before ending program. Download from http://www.notam02.no/arkiv/src/

19 years, 1 month

[linux-audio-user] fluidsynth multi channel output

by BJaY

Hi, I've been using a shell scipt to load the various applications used for my projects and one of these applications is qsynth. As far as I can see, qsynth does not alow a configuration file to be specified, so I can't vary the sound fonts I use from project to project - please correct me if I am wrong, it will solve my problem. I turned to lash / fluidsynth combination but one of the fonts I use as multiple outputs (one for each drum). This worked OK in qsynth, I set each channel to the same prog / channel and the different drums would pop out of each channel as dictated by my qmidiroute config. I've been trying to do the same with fluidsynth but everythings coming out of the first channel. I use fluidsynth -a jack -C no -g 1 -o audio.output-channels=2 -o synth.audio-channels=13 -o synth.audio-groups=13 -o audio.jack.id=test -o audio.jack.multi=yes -R no -o audio.periods=2 -o audio.period-size=128 -o synth.verbose=yes -r 48000 /mnt/audioHD/SoundFonts/percussion/ns_kit7freesf2lite/ns_kit7free\ lite.sf2 to start the synth then select to set each midi channel to font 0. Any help would be appreciated. Cheers, Bruce.

19 years, 1 month

[linux-audio-user] Digital DJ control

by Novensiles divi Flamen

I'm on the hunt for a decent digital DJ controller that works with linux. The hercules is just a toy, I want something more robust and tactile. The Behringer BCD2000 *looks* good, but I haven't had a chance to play with it yet or found anything about linux support. The Kontrol:DJ has linux support but I know nothing about the company or the products reliability. So does anyone have some experiences or recommendations for a good one? - Noven -- >-- Novensiles divi Flamen --< >---- Miles Militis Fons ----<

19 years, 1 month

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Linux-audio-user November 2006