Linux-audio-user

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20713 discussions

[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__

21 years, 10 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

21 years, 10 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

21 years, 10 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...

21 years, 10 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~~~ ;)

21 years, 10 months

[linux-audio-user] Latest release of FreqTweak

by Jesse Chappell

Anouncing version 0.6.0 of FreqTweak. http://freqtweak.sourceforge.net New in this release are spectral filter Modulators, which can animate and modulate any of the filters automatically in several ways. If you thought FreqTweak was fun before, be prepared for hours of audio mayhem. See the webpage (and the software) for details. Just in time for the ZKM/LAD conference in Karlsruhe :) Please report any problems compiling this release on your various platforms to me, and as always report any bugs or feature requests to freqtweak-user(a)lists.sourceforge.net (you must subscribe first). Enjoy, Jesse Chappell ------ FreqTweak is a JACK-based application for FFT-based realtime audio spectral manipulation and display. It provides several algorithms forprocessing audio data in the frequency domain and a highly interactive GUI to manipulate the associated filters for each. It also provides high-resolution spectral displays in the form of scrolling-raster spectrograms and energy vs frequency plots displaying both pre- and post-processed spectra. -------

21 years, 10 months

[linux-audio-user] log sine sweeps

by mrtn

hello, i am trying to record impulse responses from my studioequipment to correct it's phase and freq responses with e.g. DRC and bruteFIR. I heard the best idea would be to take log sine sweeps for the measuring? it would be great if someone more experienced than me knows of a good method to create sweeps (or chirps) of equal freq.response with linux software?! or maybe some other tips and tricks about audio impulse response measuring with linux? peace mart

21 years, 10 months

[linux-audio-user] Suddeny, snd-usb-audio has loads of undefined symbols!

by David Baron

Did not upgrade anything touching this, too my knowledge. Doing a cat /dev/midi1 from the device connected to USB shows normal operation. What gives?

21 years, 10 months

[linux-audio-user] Recording RealPlayer

by Christian Convey

Hi guys, I was wondering if someone could recommend a good way of recording RealAudio streams so that they ultimately end up on disk as .wav or .mp3 or .ogg files. I looked at Jack, but RealPlay isn't listed as one of Jack's compatible applications. I looked for a RealPlay plugin for XMMS (someone said he used that plugin and XMMS's Disk Writer plugin), but I couldn't find it anyway. Any help would be most appreciated. Thanks, Christian

21 years, 10 months

[linux-audio-user] Cheap 5.1 soundcard?

by olig9＠gmx.de

Hi, as the onboard soundchip on my Epox 8RDA3+ (CMedia 9739) doesn't work very well, I'm looking for a cheap soundcard which can handle 5.1 sound. It should run under Linux (Debian Sarge, Kernel 2.6) and Win98, and I want to be able to play AC3 sound (that can be done in software, right?). I've already looked around and found several cheap 5.1 cards, but I have doubts about their Linux compatibility... Can you tell me something about these cards: Creative Soundblaster 4.1 Digital Creative Soundblaster live 5.1 Digital Typhoon Acoustic Six 5+1 Terratec Aureon 5.1 Fun Is any of these cards well supported by Alsa, and can I play 5.1 and AC3 sound with it? I've already nearly decided for the SB live 5.1 Digital but then noticed that it's not that well supported... Or is there any other card which you could recommend? I don't want to spend too much, it should definitely stay below 50 EUR, but I don't have high expectations (playing MP3s and games, watching movies, getting system sounds...). Thanks in advance for your help, Oliver Gerlich

21 years, 10 months

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Linux-audio-user