Linux-audio-user April 2004

linux-audio-user@lists.linuxaudio.org

141 participants
177 discussions

by Tim Blechmann

hi all, since i'm about to rewrite my (pd) performace patch, i'm curious if i should switch to supercollider ... i heard that (on macs) supercollider computes much more efficient than max/msp ... is that somehow compareable to linux / i686 / pd? has anyone tried to run benchmarks with similar patches on both programs to compare the cpu usage? cheers... Tim mailto:TimBlechmann@gmx.de ICQ: 96771783 -- The only people for me are the mad ones, the ones who are mad to live, mad to talk, mad to be saved, desirous of everything at the same time, the ones who never yawn or say a commonplace thing, but burn, burn, burn, like fabulous yellow roman candles exploding like spiders across the stars and in the middle you see the blue centerlight pop and everybody goes "Awww!" Jack Kerouac

20 years, 8 months

[linux-audio-user] anti-compressing?

by Andrew Gaydenko

Hi all, Few days ago there was discussion in the list about mastering-CD/compressing/ limiting/gain-upping and so on. I have strange feeling from the discussion. Does it mean, that, indead, we (all CD-listeners) listen DAMAGED with such compressing music? I don't mean any music/sound engineering work! I'm saying about market demands (compressed music is more sutable for cheap audio quipment, isn't it? And compressed sound seems to be better at low volume level, don't it?). If it is true (i.e., a market demands to damage music) - are there any (software) tools to anti-compress a dynamic range? And - is it worth even to try to expand dynamic range? P.S. I'd like to repeat, I don't say about engineers work - they try to do their work as good as possible, I think. I'm saying about a market influence to music quality. Andrew

20 years, 8 months

[linux-audio-user] Workstation - Collaboration

by aacton＠yorku.ca

Hey, My crappy, year-old "Mandrake Audio Workstation HowTo" is horribly out of date, and is still receiving many many hits per day. Since I don't have time to rewrite it, I've made it community-accessible on my new site. If anyone wants to help edit/update/add content, they can via the web at http://groundstate.ca . Todo: - update to Mandrake 10 - revise for 2.6 kernel - add MIDI information - tidy up the hellish HTML Also, if anyone wants to start another community-edited linux audio book, let me know. Austin

20 years, 8 months

[linux-audio-user] Newbie questions for live gigging

by Richard K. Ingalls

I've been lurking on this list for a few months... I haven't even created a Linux Digital Audio Workstation yet, but I'd like to. I'm becoming more and more a believer in Open Source Software not only on the server but also on the desktop... (I digress, sorry). I'm looking at the latest MIDI sound modules and thinking can't I achieve many of these things using Linux and my PC? 1) I want to have many sounds available for live playing (via MIDI) on my keyboard. That's the top priority. Lots of sounds. Good quality sounds. I'm thinking a sample playback machine or sound fonts (right?). Can't I even achieve BETTER sounds with my PC than with a very expensive new sound module? 2) I'd like to be able to sequence those great sounds. It would be even better if I could use the sequencer WHILE playing live sounds through this machine. 3) It would be very cool to be able to edit those sounds and tweak them. Doesn't have to be "live" though. MY QUESTIONS: Can I achieve these goals without too much fuss (remember I'm a newbie)? Which "distro" (CCRMA or other?) would be best/easiest? Do I want to go with sound fonts? What sound card should I go with (not too expensive, ok?)? Thank you Linux Audio Gurus! -- =========================================================== "He is no fool who gives up what he cannot keep for that which he cannot lose." -- Jim Elliott RICHARD K. INGALLS Director of Information Technology Glenwood R-8 School District West Plains, MO email..ringalls (at) glenwood.k12.mo.us web....http://glenwood.k12.mo.us ph.....417.256.4849 fax....417.257.2567 "Miracles are a retelling in small letters of the very same story which is written across the whole world in letters too large for some of us to see." -- C. S. Lewis ===========================================================

20 years, 8 months

[linux-audio-user] regarding SCons

by Dave Phillips

Greetings: I'm happy to see and hear another release of CheeseTracker, but I have a couple questions regarding SCons. I'm not opposed to its use, it appears to resolve many issues for cross-platform builders, but since it is relatively new (and I'm relatively old) I'm a little confused by it. The SCons FAQ is pretty much just useless history and doesn't answer the following questions: 1. Apparently SCons does without the need for anything like 'make depend' or 'make clean'. If that's true, does it mean that SCons builds fresh every time, i.e., that it autoerases the compiled objects ? 2. If something like 'make clean' is supported, how do I invoke it ? What can I do if I don't want automatic erasure of the object files ? 3. No man pages, that sucks on a UNIX/Linux platform. The GNU autotools have them, SCons should have them too. 4. No 'scons uninstall' ?? Again, if I'm missing it, please inform me how it's invoked. CT and Csound are now the only two apps on my system that use SCons. The maintainers of Csound couldn't make the autotools work for themselves, so now you must add downloading and installing SCons (and an up-to-date Python) to the process of building Csound. Happily, that isn't especially difficult, but it does add another layer of complexity to the process. More to the point, why don't the mainstrean Linux distros include SCons as a matter of course ? Best, dp

20 years, 8 months

[linux-audio-user] [ann] Wiki page for LAConf2 travel planning now open

by Frank Barknecht

Hallo, as it was quite helpful last year I now again opened up a page on my WikiWeb for people who might want to share their ride to the Linux Audio Conference 2 next weekend in Karlsruhe. You can find, read and edit that page here: http://footils.org/cms/pydiddy/wiki/LaConf2 Everyone is allowed to edit this page, wiki-style. If you can offer a ride in a car or if you are looking for a lift yourself, you can leave your contact information there. This also can be used to form groups to get train discounts or similar. Ciao -- Frank Barknecht _ ______footils.org__

20 years, 8 months

RE: [linux-audio-user] Newbie questions for live gigging

by Matthew Allen

For a newbie (someone who hasn't even installed a distro yet) I would suggest doing a Live CD first (Dynebolic is the most mature for multimedia, however the Agnula guys currently have one just about ready to go). Once the Linux newcomer has gotten an idea of what you can do (and more importantly what they want to do) with linux using the Live cd, they can then start to look at distros. The live CD route has a couple of advantages. First, if they find they don't like Linux, all they need to do is reboot. No pain, no hassle, nothing. Second, the live CD's are a great way to gradually learn all of the ancillary stuff you need to know if you are going to use linux (command line stuff, configuring programs, directory structure (like: what is your home directory?), etc.) The problem with going the straight Distro route (except I think for CCRMA which seems to get everyone who tries it up and running VERY VERY fast) is that you are hit with all of this 'new' info right at the onset. It can be a bit overwhelming, and a live cd really helps to acclimate a new user to the wonderful world of Linux. m. > -----Original Message----- > From: linux-audio-user-bounces(a)music.columbia.edu [mailto:linux-audio- > Subject: Re: [linux-audio-user] Newbie questions for live gigging > > Paul Winkler wrote: > > On Fri, Apr 23, 2004 at 12:35:52PM +0200, Robert Jonsson wrote: > > > >>I think a list of distros that aim for multimedia would looks something > like > >>this: > >>- Mandrake (especially with Thac's rpms, rpm.nyvalls.se, very fresh) > >>- Suse (a lot of stuff is included in the main distro, including > lowlatency > >>patched kernels) > >>- Redhat/Fedora + CCRMA (Looks good and diverse, CCRMA is where all the > good > >>stuff is) > >>- Agnula (should be a big name, multimedia is what confirms their > existence, I > >>know too little though) > >>- Dynebolic ( live-cd based, don't know much about it) _________________________________________________ Scanned on 23 Apr 2004 17:34:28 Scanning by http://erado.com

20 years, 8 months

[linux-audio-user] Re: log sine sweeps

by Christian Frisson

Hi Martin, Another mailinglist worth posting is music-dsp: http://music.calarts.edu/~glmrboy/musicdsp/music-dsp.html There you may often meet Angelo Farina, who has made available an amazing quantity of publications about Room Acoustics among other fields: http://pcfarina.eng.unipr.it/Public/Papers/list_pub.htm For your concern, let me quote the following one: "APLODSP, design of customizable Audio Processor for LOudspeaker system compensation by DSP", 109th AES Audio Convention, Los Angeles, 18-22 September 2000, http://www.ramsete.com/Public/Papers/147-AES00.PDF When it comes to Linux, you may already know the "Sound & MIDI Software For Linux" ressource site, which contains the following sections: - DSP Software: http://linux-sound.org/dsp.html - Scopes: http://linux-sound.org/scopes.html Not featured there for the moment, JAAA (the Jack and Alsa Audio Analyser), by Fons Adriaensen, will be presented at the 2nd International Linux Audio Conference, 29 April - 2 May 2004, ZKM Center: http://users.skynet.be/solaris/linuxaudio/ http://on1.zkm.de/zkm/stories/storyReader$3625#abstract_adriaensen02 If you want ISO-normalized linear or logarithmic swept sines, have your own series burnt with Reference Audio CD: http://refacd.sourceforge.net/ There are other techniques worth-using when it comes to getting room impulse responses, especially one based on MLS sequences, most of which you'll have compared on this document: "Comparison of different impulse response measurement techniques", G.-B. Stan, J.-J. Embrechts, D. Archambeau, Journal of the Audio Engineering Society, Vol. 50 (2002), n°4, pp. 249-262, http://www.montefiore.ulg.ac.be/~stan/ArticleJAES.pdf You can at last also check my Mozilla-generated bookmarks page, where you'll find most of the above, bearing in mind it is frequently subject to change: http://theremin.free.fr/hunchback/index.php?nodes=|0|1|50| This points you to the following nodes (remove the last prefix of the url in case of malfunction): + ArkaKlap + Kontenu + Kode (Dev Ressources) + Kours (Papers) + Koncurrence (Soft- & Hardware Ressources) I'll try to make Octave m-files (an opensource 95% Matlab clone) available by the end of May: MLS / swept sine generation, impulse response extraction, inverse filtering... Cheers, Christian Frisson

20 years, 8 months

[linux-audio-user] Jack setup issue

by RachelAPP

It's me again with some config issues.. After getting my soundcard (Terratec DMX 6 Fire) to work correctly with Audacity, i decided to use Muse... So i installed Jack. But when i do jackd and it creates the alsa driver, it puts 0 and 0 for number of input and output channels. When i try to force it into something else with -i 6 and -o 2 for example, it tells me "ALSA:cannot set channel count to 6 for capture". Within Audacity, i can set the number of recording channels to whatever i want and they all record properly so i'm a bit surprised why it doesn't work with jackd... Any idea? Any help would be very much appreciated as i've been reading various FAQ/help pages on various sites but haven't found any answer yet...

20 years, 8 months

[linux-audio-user] New box problems...

by Russell Hanaghan

Have a box I have just put MDK 10.0 Community on. Shuttle A39k Mobo, Athalon XP 2600, 512MB, Via chipset...Shows realtek chip on soundcard in Alsa mixer. Have installed Thacs 2.6.5 MM kernel, modprobed "realtime allcaps=1" manually. Installed the regular set of apps also from Thacs recently updated page for 10.0; Qjackctl Jackit .98 Ardour most recent etc,etc,etc. I can get Jack to fire up no problems but the Xrun callbacks run like crazy! It seems to do it only on the playback side of the duplex I/O. (tested in options of Qjackctl) Does not appear to do it on Capture. Ardour connects as client etc. Seems fine although I've not tried to record anything yet. Just realized that the only thing I have not set up is "tmpfs" although I did on the last install with the exact same setup and it still did the same thing. Any ideas?? Thanks Just in case I ain't said it lately, This Linux community is the GREATEST~~~ ;)

20 years, 8 months

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Linux-audio-user April 2004