Linux-audio-user October 2009

linux-audio-user@lists.linuxaudio.org

141 participants
173 discussions

by HamRadio

Hi, I'm beginning to use my shiny Edirol FA-66 with ffado, jack and audacity on my Debian Squeeze. After reading some guides and hints on the web it seems to work fine, even though I'm still learning how to effectively use this setup. So I'd like to ask someone here on the list: how can I make a stereo recording in audacity with *only* input 3 and 4? I'm only able to get these signals if I start a project containing 4 tracks, thus having also 1 and 2 which of course are silent. Perhaps I have to route 3 and 4 in some way that they appear on 1 and 2? And how? Many thanks for answering.

16 years, 1 month

Blog recommendations?

by Tom Dunstan

Hi all, Can someone recommend to me some good linux audio blogs worth subscribing to? It would be good to keep up to date with the new adventures in Linux audio projects as they come up. cheers, t

16 years, 1 month

AVLinux question

by Giorgio

Did anybody tried to install AVLinux with raid 5?Thank you Giorgio

16 years, 1 month

Recording of my new band.

by Loki Davison

Hey all, Thanks everyone for the help getting the recording stuff for my band. We have now recorded quite a bit of stuff, just simple jam recordings in Ardour. Here is one of the covers we did, of The Magnetic Fields. Using 3 mics, 2 on guitar in x-y and one on vocals. Tell me what you think of the vocalists singing too, and well, my guitar playing ;) http://yoyo.its.monash.edu.au/~loki/The_Turncoats-The_Book_Of_Love.mp3 Loki

16 years, 1 month

Re: [LAU] Controllers and stuff for live performance

by David Adler

On Mon, Oct 12, 2009 at 7:02 PM, Carlos Sanchiavedraz <csanchezgs(a)gmail.com> wrote: > > > 2009/10/12 David Adler <david.jo.adler(a)gmail.com> >> >> For theremin sensors have a look at: >> http://asmir.theremin.ru/ >> The sensors Andrey Smirnov uses in his workshops can either >> be connected via a microcontroller like Arduino, or their analog >> frequency output can be fed into a soundcard and converted to >> control data by pd. >> >> have fun, >> d >> > > I love Theremins! > > It's just that, after having a look at the projects, it seems to be very > difficult to implement any of them, most of all if it includes sensors, > although there are some Pd libraries (for Mac most of them). > I'm going to watch some videos. > > Thanks David. > In any case, whether using pd+soundcard or a microcontroller, you need a sensor. During his workshops Andrey Asimov sells them, it doesn't seem as if he sells them through the website though. Maybe just contact him via email, he is a very nice guy. The Pd libraries are, just as Pd, platform independent. The MAX/MSP stuff is Mac only. Theremin sensors are quite sensitive to distubance (e.g. ground loops) so it can be a little fiddly to set everything up. I recomment one of the workshops (if there is one in the area...), though given some interest and patience it should be feasible without. best, d

16 years, 1 month

dssi-vst vsthost problem

by Giorgio - Audiophilo

Hi, i'm running Drumagog (a drum replacer) under Linux. Everything worked fine till today, now the vst crashes after few seconds. Here is the output: ~/vst$ vsthost Drumagog.dll Returning file identifiers: JRmPMdexnq7Yn2G1rKh5kDMv RemoteVSTClient: executing /usr/local/lib/dssi/dssi-vst/dssi-vst-server -g Drumagog.dll,JRmPMdexnq7Yn2G1rKh5kDMv DSSI VST plugin server v0.986 Copyright (c) 2004-2008 Chris Cannam Loading "Drumagog.dll"... dssi-vst-server[1]: not found in /usr/local/lib/vst/Drumagog.dll dssi-vst-server[1]: not found in /usr/local/lib/vst/Drumagog.dll ALSA lib pcm_dmix.c:1008:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm_dsnoop.c:593:(snd_pcm_dsnoop_open) unable to open slave fixme:mixer:ALSA_MixerInit No master control found on M Audio Delta 1010, disabling mixer dssi-vst-server[1]: found in DLL path done Testing VST compatibility... dssi-vst-server[1]: VST entrypoint "VSTPluginMain" found WARNING: Plugin inputs and/or outputs changed: NOT SUPPORTED WARNING: Plugin inputs and/or outputs changed: NOT SUPPORTED WARNING: Plugin inputs and/or outputs changed: NOT SUPPORTED WARNING: Plugin inputs and/or outputs changed: NOT SUPPORTED WARNING: Plugin inputs and/or outputs changed: NOT SUPPORTED WARNING: Plugin inputs and/or outputs changed: NOT SUPPORTED WARNING: Plugin inputs and/or outputs changed: NOT SUPPORTED WARNING: Plugin inputs and/or outputs changed: NOT SUPPORTED WARNING: Plugin inputs and/or outputs changed: NOT SUPPORTED dssi-vst-server[1]: plugin instantiated dssi-vst-server[1]: plugin is a VST dssi-vst-server[1]: plugin has a GUI dssi-vst-server[1]: plugin supports processReplacing dssi-vst-server[1]: opening plugin dssi-vst-server[1]: plugin is VST 2.0 or newer dssi-vst-server[1]: plugin is not a synth dssi-vst-server[1]: plugin can receive MIDI anyway dssi-vst-server[1]: plugin name is "Drumagog" dssi-vst-server[1]: vendor string is "WaveMachine Labs" WARNING: Plugin inputs and/or outputs changed: NOT SUPPORTED Initialising Windows subsystem... dssi-vst-server[1]: registered Windows application class "dssi_vst" dssi-vst-server[1]: created main window dssi-vst-server[1]: sized window dssi-vst-server[1]: showed window done dssi-vst-server[1]: created audio thread client sized shm to 8192 dssi-vst-server[1]: set sample rate to 44100 dssi-vst-server[1]: set buffer size to 512 sized shm to 8192, 2 inputs and 2 outputs zombified - calling shutdown handler vsthost: bailing out vsthost: seq.c:4085: snd_seq_event_input: Assertion `seq' failed. ERROR: Remote VST plugin communication failure in audio thread Remote VST plugin audio thread: returning Aborted ERROR: Remote VST plugin communication failure in GUI thread casalogic@casalogic:~/vst$ dssi-vst-server[1]: cleaning up dssi-vst-server[1]: closed audio thread dssi-vst-server[1]: freed dll dssi-vst-server[1]: exiting Any clue? Thanks G

16 years, 1 month

Re: [LAU] Live CDs

by Hans Wilmers

> > begin response to small rant ... > > > > I have used Linux for quite a few years now (when did CorelLinux first > > come out?) and AT&T UNIX before that. I'm a rather technical user. I > > have NEVER compiled a kernel. *I've never had to.* So your > > casually-mentioned-phrase "once you get in the swing" glosses over a > > process that may be well beyond the comfort-zone or capability of many > > Linux users. (My lovely Linux-using wife would be completely lost from > > the start.) > > > > I still don't understand why distros don't routinely include RT kernels > > as an option in their repositories. > And even if you find an RT kernel for your distro, or you are capable of building an own one, you still have to do a lot of tweaking to run it on a live CD -- which is why I didn't put it on it. / Hans

16 years, 1 month

Rosegarden crashes when recording externel audio

by Andrew C

Hey all, I'm running Debian testing and I'm trying to record external audio from my yamaha keyboard via the mike-in jack. While I can hear the sound and see the audio meter jump in rosegarden, when I record some audio and then press 'stop', rosegarden crashes with: http://pastebin.ca/1615355 Any ideas what's going on here? On a slightly related note, when I connected capture_1 to my system output in qjackctl, there's a lot of annoying noise and random blips and bleeps. Is this a silly integrated sound card related problem (i.e I should buy something better) or what? Oddly enough, I don't get any noise or blips/bleeps when just sending the keyboard from mic in to my speakers without connecting capture_1 to the jack output. Thanks, Andrew Coughlan

16 years, 1 month

Question about DSP/Processor Load and multiproc support

by Aurelien

Hello, I suppose this question has already been posted, and answered, but I can't get any explanation which seems to fit my question, or I do not understand it, so I post it there. I know that Jack DSP Load isn't a true DSP Load, it's nothing but buffering, if I'm not wrong. Though, I don't know what hardware part of the computer the DSP finally relies to (or affects, or whatever), but I suppose it's the processor, as the load of the DSP when launching, for example, one AMS seems to be the same as the processor load assigned to the AMS process. So, the first question is, does the DSP mean "processor load due to software appearing in jack"? Next, question is about multicore. When I monitor my system using top on a my quad-core or duo-core machines, I can reach total processor loads such as 400% or 200%, as top seems to be designed for monocore. Actually, it obviously means 4x100% or 2x100%. When I use Jack1, I got an Xrun (at least) every time I reach the 100% DSP load, which is finally with quite few softwares (4 AMS, 1 Sooperlooper, 1 seq24, 1 Tapeutape, some routing, some qmidiroute) for my configuration (Intel Q6600 Core 2 Quad, 8Gb RAM, Focusrite Saffire Pro 40 soundcard -firewire, with developpment version of FFADO-). What I was wondering is: does jack prefer to create an Xrun as soon as 100% DSP load is reached? I just installed jack2, in order to check whether it might increase the perf of my system, but, at first sight, the DSP load is the very same as with jack1. OK, here it is, I'm sorry it's not really clearly explained, it's quite clear in my head, but unfortunately, with french words!!! Thanks. -- Aurélien

16 years, 1 month

Qsampler crashes when closed

by Jonathan E. Brickman

Qsampler loads and runs well -- but when I try to close it, either by the window's closer X or File/Exit, it crashes. Anyone know what I should try? J.E.B.

16 years, 1 month

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Linux-audio-user October 2009