Linux-audio-user September 2004

linux-audio-user@lists.linuxaudio.org

161 participants
177 discussions

[linux-audio-user] [ANN] qjackctl 0.2.11 released!

by Rui Nuno Capela

Hi, Just less than a week after some user complaints about that glossy-glass light effect featured on the front panel display, here comes a couple of fixes that were made into this rather minor dot release. Now's the perfect time for a recommended upgrade: qjackctl 0.2.11 is here, grab it from: http://qjackctl.sourceforge.net http://sourceforge.net/projects/qjackctl Simply as is, as taken from the changelog: * Fixed Input/Output channels settings, being now either enabled when the ALSA driver is selected for Capture/Playback only. * Shiny display effect: after some conservative user complaints this pure cosmetic feature is now made optional ;) Enjoy. -- rncbc aka Rui Nuno Capela rncbc(a)rncbc.org

19 years, 8 months

[linux-audio-user] why this works now ...

by Eric Dantan Rzewnicki

Well, now that I know ecasound's rtnull is not meant for use with the kind of thing I was trying to do and remembered that you can't add a chainop to 2 chains at once ... This whole thing works in one ecasound instance, with or without jack ... I feel really foolish for making all this noise on the lists all week ... <hangs head in shame> I'll try to write up something for the ecasound docs to explain this so others don't make the same mistake. There is still a slight zipper noise in the -ea: controller. Steve seems to think that's related to the analogueOsc somehow, but I don't see how it could be since the plugin doesn't have an amplitude control. The glitchiness in the audio output seems to be pretty much gone. It was probably a symptom of the xruns due to the rtnull object and the rest of the settup running off different clocks (system vs. soundcard). One weird thing, though. Before I remembered to split the doubled chains out into separate lines I tried to get the previous version to work with -i:null instead of rtnull. It worked to play via jack, but, as soon as I connected another ecasound to the first's jack ports the first ecasound got kicked out. I haven't tried checking on the .ecs problem, yet. But, I'm guessing I probably just messed something up with that, too. :( Oh well. Thanks for everyone's help. The working ecasound only version is attached. Sorry for cross-posting again, but since I went and spread this "problem" all over 4 different lists, I figured I should wrap it up on at least 2. I figure most people on LAD and jackit-devel are probably on LAU, too. The upside is we have another positive experience with the patched 2.6 kernel to report. And for myself, I'm finally using this controller I bought almost a year ago to have some fun making sounds. I can go ahead and write my randomized ECI versions as well. I'll also look into adding interpolation to the analogueOsc Hz control. Thanks, Eric Rz.

19 years, 8 months

Re: [linux-audio-user] Laptop + Multiface = Easy?

by thewade

I have two laptops: Dell inspiron 8000 and an AMD 64 from xtrementoebooks. The Dell worked just fine after I rebuilt the 2.6.4 kernel to include the hdsp driver and built alsa-lib and utils(hdsploader/hdspmixer). No problem really. The AMD on the otherhand is having some trouble. I dont know if the driver is different. In the Dell during boot the kernel finds the multiface and says its waiting for firmware which hdsploader provides. The AMD64\'s kernel (2.6.8.1) finds the cardbus but not the multiface and also says its waiting for firmware. But once I run hdsploader the kernel gives me Ooops, which is the worst message the kernel can give you. The problems with the AMD64 may be that hdsploader isint uising the correct pointer size because of the 64 bit thing, who knows... But the Dell worked just fine! My advice: If you want to get up and running without much trouble get an x86-32. Good Luck, -thewade

19 years, 8 months

[linux-audio-user] Analysis software?

by Paul Winkler

Hi folks, I'm looking for something that can take soundfiles and display various analyses of them. Any recommendations? Something very much like what you can get with Spectralab, for example these plots: http://www.pcavtech.com/soundcards/ht1869/index.htm ... but free software and working on linux :-] Basically the main thing I need is a good display of log frequency vs. dB amplitude, averaged over the whole file, useful for e.g. getting a frequency response from a swept sine wave or white noise. Other analyses that would be handy at various times: signal to noise ratio and total harmonic distortion given a known input. Also really nice would be a clearly labelled sonogram showing log frequency against time. So far I've been using snd, which has a decent sonogram but kinda falls down on readability: e.g. it doesn't display the actual frequencies of the scale if you select log frequency, it's just 0 to 1.0 so I have to guess, or click on a part of the graph to find out about that particular spot. -- Paul Winkler http://www.slinkp.com

19 years, 8 months

Re: [linux-audio-user] ???

by Sampo Savolainen

Quoting jonathan segel <jsegel(a)magneticmotorworks.com>: > > On Sep 9, 2004, at 6:27 PM, noise floor wrote: > > > > > --- Mark Knecht <markknecht(a)comcast.net> wrote: > > > >> On Thu, 2004-09-09 at 01:15, Steve Harris wrote: > >>> On Wed, Sep 08, 2004 at 03:30:33 -0700, Mark Knecht wrote: > >>>>>> What part of California are you from? Must be 'South' > >> California? ;-) > >>>>> > >>>>> Was there for 3 years. I'm almost over it now! Nth Cali is > >> where it's at. > >>>>> Air's not so "chewy". > >>>>> > >>>> > >>>> crikey - we're neighbors mate. ;-) > >> > >> Not really close, but should you find your way to the Bay Area then > >> the > >> first two stouts are on me. > >> > > > > I'm in west Oakland myself; what part of the bay area are you in? > > oakland, myself (as below) most of the time. in stockholm now. > lots o' NoCal.... no wonder they call it "planet" ccrma. Stockholm? At last someone nearby! I've been grinding my teeth with these people setting up a meet on almost the opposite side of the "planet". I live in Helsinki, just over the baltic. And study where our saviour, Linus, started his pet project. Oh yeah, sorry.. we were talking about leving religion out of it too... :) Sampo

19 years, 8 months

[linux-audio-user] RPMs for new Distro...Yoper Linux

by Russell Hanaghan

Ok...so I KNOW you guys couldn't care less about yet ~another~ Linux distro....And knowing how passionate one gets about this, I don't blame you! But this is top the authors of some of our most treasured audio apps... I have managed to build some RPM's for this new distro working with one of their developers. The only app they had that I could find was Audacity I think. So...I have helped them with: Qjackctl Jack-audio-connection-kit Ardour (with libsndfile, raptor, etc) These are functional and working correctly IMO. Someone else built 'em and sent them to me. I installed them and they worked. I have just finished building: swh-plugins (w/ fftw3) JAMin tap-plugins They worked on my system. Waiting to find out if they do on the devs system. If they do they will go into their "contrib" repository managed by apt. I'm going to talk with the main key developer. If he expresses interest in the area of pro quality audio and possibly catering to that area with modified kernels and the whole works, I'll continue to help bring it along as best I can. www.yoper.com if your interested. R~

19 years, 8 months

[linux-audio-user] Kernel tweaking for low latency

by Ben Sheron

Hello Everyone I have used Linux for a couple years now, but have recently decided to start using it for audio work. As a result, in terms of real professional Linux audio, I am a newbie. My current setup includes a dual AMD MP 2800 box with an M Audio Delta 44 sound card. I am running SuSE 9.1, and installed Jack and Ardour. However, I need to get a low latency kernel going. Even when I run Jack and Ardour as root, I still get a noticeable delay in the audio when I try to record from a mic and monitor what I'm recording through one of the outputs on my sound card. So, how exactly do I go about optimizing a kernel for audio, especially on SuSE? Does SuSE have a precompiled one available, or is it best to just compile it on my own? I've Googled around a bit, and checked SuSE's documentation on recompiling a kernel, but haven't had much luck. The last time I tried recompiling a SuSE kernel I trashed the whole system... Thanks for any info, I can't wait to start getting into Ardour more... Ben

19 years, 8 months

[linux-audio-user] Error building swh-plugins...

by Russell Hanaghan

Steve, Got this; gcc -DHAVE_CONFIG_H -I. -I. -I. -O2 -g -march=i686 -mtune=i686 -c `test -f 'lcr_delay_1436.so.c' || echo './'`lcr_delay_1436.so.c sc2_1426.xml: In function `runAddingSc2': sc2_1426.xml:45: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://gcc.gnu.org/bugs.html> for instructions. make[2]: *** [sc2_1426.so.o] Error 1 make[2]: *** Waiting for unfinished jobs.... make[2]: Leaving directory `/usr/src/yoper/BUILD/swh-plugins-0.4.7' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/usr/src/yoper/BUILD/swh-plugins-0.4.7' make: *** [all] Error 2 error: Bad exit status from /var/tmp/rpm-tmp.50444 (%build) RPM build errors: Bad exit status from /var/tmp/rpm-tmp.50444 (%build) Yes...trying to build rpms for another distro but does this look familiar? Thanks R~

19 years, 8 months

[linux-audio-user] JAMin compile error...

by Russell Hanaghan

I was trying to build jamin 9.0 last night and it stalled in make at the scenes.c thing I think. I went back thru the posts and found Jack O'quins patch...but I don't know how to apply the patch. Apparently some issue with compiling with gcc 3.4? How do I apply the patch or is there a tarball somewhere that has the updated source? Thanks

19 years, 8 months

[linux-audio-user] [ANN] Hydrogen v0.9.0 Released

by Comix

Hydrogen 0.9.0 is out! :) Features: __General__ * Very user-friendly, modular, fast and intuitive graphical interface based on QT 3. * Sample-based stereo audio engine, with import of sound samples in .wav, .au and .aiff formats. * Support of samples in compressed FLAC file. __Sequencer and mixer__ * Pattern-based sequencer, with unlimited number of patterns and ability to chain patterns into a song. * Up to 64 ticks per pattern with individual level per event and variable pattern length. * 32 instrument tracks with volume, mute, solo, pan capabilities. * Multi layer support for instruments (up to 16 samples for each instrument). * Ability to import/export song files. * Unique human velocity, human time and swing functions. * Multiple patterns playing at once. __Other__ * OSS and Jack audio drivers, with assignable Jack ports. * ALSA MIDI input with assignable midi-in channel (1..16, ALL). * Import/export of drumkits. * Export song to wav file. * Export song to midi file. Changes: * Multi layer support for instruments (up to 16 samples). * Multiple patterns playing at once. * Added FLAC files support for songs and drumkits. * Added pitch and gain properties per instrument. * Improved song and pattern editor (selections, copy/move, etc..). * Added a new selectable user interface (single panel). * Better jack-transport support. * Ability to set the note length in pattern editor * Export song to standard midi file Download: http://hydrogen.sourceforge.net Happy drumming! :^) -- Alessandro <Comix> Cominu http://hydrogen.sf.net e-mail: comix(a)despammed.com Icq: 116354077 Linux User # 203765 [...Codito Ergo Sum...]

19 years, 8 months

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Linux-audio-user September 2004