Linux-audio-user October 2004

linux-audio-user@lists.linuxaudio.org

153 participants
223 discussions

[linux-audio-user] adm: list archives at eca.cx going away

by Kai Vehmanen

Hello, this is not an urgent issue, but I'd like to warn in advance that the laa/lad/lau list archiving at www.eca.cx/la[adu] will stop some time next year. I'm not sure of the exact date, but sooner or later anyway. Note that I'm not going to take the existing archives offline, so all links pointing to mails at eca.cx will still work. Fortunately we nowadays have many other archives of the lists. We just now need to pick a new official archive and update the links at: http://www.linuxdj.com/audio/lad/archive.php3 I propose that we use the archives at columbia.edu: http://www.music.columbia.edu/pipermail/linux-audio-dev/ ... and so on. Very good archives can also be found at gmane.org: http://gmane.org/info.php?group=gmane.linux.audio.devel ... and so on. -- http://www.eca.cx Audio software for Linux!

19 years, 11 months

[linux-audio-user] creating audio-only dvds

by derek holzer

Hi all, I have about a five and a half hour long concert I would like to burn as audio on a DVD. I assumed that cdrdao or cdrecord would simply make an "audio dvd" from the wav files, but that is not the case! My guess is that there is something in the CDDA spec which prevents making an audio CD over a certain length, because I get "illegal time code" errors from cdrdao. So, three questions: 1) Is there a way to master an "audio dvd" without encoding to a closed DVD-A format? By this I mean a DVD disc with uncompressed audio which can be played back by most CD/DVD combo players. 2) Failing this, I would be happy to simply burn a data DVD with the tracks, but I want to make sure there are no gaps during playback between the tracks [thus my idea to make a DAO "audio dvd"]. There are 7 tracks, each approx 50 min long, and each track continues directly into the next. I do not have access to the original, continuous recording. How could I get ecasound [or similar command line app] to append the files together into one single, seamless file? Using a GUI app like Rezound for this is just too cumbersome! 3) I am not sure if have a single 4 Gb wav file would cause playback problems on a reasonably fast computer with a DVD drive. My intuition says yes, however. What other options for seamless playback of almost 6 hours of sound do I have? thanks much, derek

19 years, 11 months

[linux-audio-user] [announce] radio programme (in German) on free software and contemporary music, LAD 2004, Wizards of Os

by Michael Iber

Hello, my radio programme about free software and contemporary composing, the LAD in Karlsruhe and the "Wizards od Os"-Conference in Berlin "- wo die Quellen offen liegen - Freie Software und aktuelle Musik" will be broadcasted on German State Radio SWR2 on Nov 1st at 11 pm. It includes interviews (from the LAD 2004) and music by Ivica Ico Bukvic Martin Rumori/Daniel Teige Thomas Grill Torsten Anders Ludger Brümmer Michel Koenders Orm Finnendahl I have to apologize to Fernando and Kjetil for not having included your interviews and music, but I had to choose from more than 3 hours of material, where I had - for a German programme - to concentrate on German native speakers. Thank you again very much for you contribution ... sorry. Best regards, Michael

19 years, 11 months

[linux-audio-user] hidden qjackctl - how to restore

by Florian Schmidt

Hi, maybe i'm just blindstruck or plain stupid but when i accidentally hit the "hide" entry in the qjackctl popup menu [usually happens when i want to reset the xrun count], there's no obvious way to make it visible again. I figure this hiding is some "kde thing", right? Bummer, when one doesn't run kde. Is there any other way? If not would it make sense to place the "hide" entry at some other spot in the popup menu? The topmost is the one which gets hit accidentally the most i figure (at least i hit it pretty often). flo

20 years

[linux-audio-user] Linux and Standards

by Ivica Ico Bukvic

Hi all, As some of you may already know, I am going to present a paper/demo at the upcoming ICMC 2004 conference in Miami on Linux titled: Linux as a Mature Digital Audio Workstation in Academic Electroacoustic Studios – Is Linux Ready for Prime Time? As promised I will be posting an expanded version of the paper online right after the presentation that is slated for the Wednesday next week. I would like to use this opportunity to thank all the members of this wonderful community for their insight and help in making my final paper as accurate and objective as possible. Furthermore, I would like to thank everyone involved in the development of audio software for the GNU/Linux platform because without you none of this would've been possible. Finally, just a couple days ago I was invited to serve as one of the panel members on Matthew Wright's discussion titled "Standards From the Computer Music Community" that will take place on Saturday November, 6. He wants me to present the Linux audio community's angle on standards and considering that this conference encompasses faculty as well as researchers and programmers from all across the World, I feel that this is a perfect opportunity to voice out our angle on the given topic and perhaps that way further expose the strengths that Linux can offer. I would like to share with you a short overview of my thoughts on this issue and would like to encourage those of you who may have additional thoughts to please send me your suggestions and/or corrections. Your help in this matter is most appreciated! However, please bear in mind due to fact that I am leaving for the conference on Sunday afternoon and am not sure how regularly (if at all) will I be able to check my e-mail while away from home, I would really appreciate it if you would please send me your responses before Sunday 2pm or so. I would of course appreciate also belated comments just in the case I do get to check my e-mail, I just cannot guarantee I'll get to read them prior to the presentation. My sincere apologies for the unusually short window of opportunity. At any rate, here's my blurb: ---------------------------------------- My initial presentation will be limited to 5-7 minutes since panel will consist of a number of members. Following everyone's initial presentation, there will be a discussion driven in part by the questions from the audience. LINUX AS A STANDARD I feel that considering linux as a standard is on one hand a kind of a paradox as it is built on the premise that individual truly can tweak it to heart's content and therefore it is relatively unlikely that any two Linux boxes would look and/or perform the same. Yet, on the flip-side of the coin Linux stands as a most successful offspring of the GNU movement and as such it is the most revolutionary and therefore the standard-setting OS in a category where it has no competition. Furthermore, this diversity it offers perhaps stands in its own light as a kind of a standard offering the end-user to shape their computer as a personalized instrument. PLANET CCRMA/DeMuDi/THAC'S RPMS/AUDIOSLACK The diversity seemingly suggests lack of standards, yet the software packages in most cases seamlessly compile on various distributions. This diversity is simply a byproduct of the diversity of the commercial Linux distributions. This is where lies perhaps the biggest problem with Linux, and that is the issue of different file tree across the different distributions which introduces hurdles for the "compile-from-the-source" crowd and in part feeds the demand for the prebuilt distros and subsequent fragmentation (a vicious circle if you like). KERNELS There is no "standard" audio kernel even though some of the kernel releases in conjunction with patches yield better performance. This diversity is however irrelevant as most of the applications work just fine on different sub-versions of the same kernel without a recompile. Therefore such disparity is more of a nuisance for the end-user than a potential standard-breaking anomaly. Furthermore the fix for such disparity is provided via aforementioned distributions. APPLICATIONS The powerful thing about Linux is that while everyone is welcome to contribute their own ideas or even design their own applications from ground-up, the strongest concepts rather than most developed applications are the ones who set the standard (i.e. JACK, ALSA, etc.) which is not always the case with the commercial proprietary World where often PR plays a critical role (i.e. VHS vs. BETAMAX -- although this is not the best example as this is not software-related but you get my point). Eventually, the strongest concepts do become also the most developed ones, but due to the fact that the source is readily available and that other developers choose to implement and therefore support those interfaces which look most promising, should there ever a new standard arise it will always have the chance to rise and overcome the leading standard, no matter how well the leading standard is established, and will likely do so in a least painful fashion for the end-user (i.e. ALSA vs. OSS as opposed to OS9 vs. OSX transition). Finally, open-source nature of the software minimizes the potential for misrepresentation of the format's features (a.k.a. false advertising in the commercial world). This is where Linux truly shines. That being said, Linux has its own share of disparate formats which impede the development of a standard (i.e. every sequencing software has a different format for saving the sessions). However, it is my feeling that this is simply a transitional phase and in due time the strongest will prevail. As far as the standard or core applications of the Linux community are concerned, I really do not wish to go there as that may spawn heated discussion which may completely detract from my goals. Besides, it is exactly this individualized preference that drives the diversity in Linux's software offering. AUDIO-RELATED STANDARDS THAT CAME FROM LINUX COMMUNITY (in no particular order -- it's 3am, give me a break ;-) Jack, LADSPA, LASH, ALSA, Ogg/Vorbis, others? (Lash is especially interesting as it is designed to unite seemingly different standards under one umbrella session controlling mechanism which is something unique for the Linux platform -- other proprietary formats are imho harder to unite under such a meta-standard, if you like, because they are often conceived to work just by themselves and do not necessarily encourage efforts from various competitive companies to conform to them; they rather come up with their own standard unless the existing standard is too strong to compete with which in either case results in a less adequate solution for the end-user) What is both interesting and in part detrimental (at least in short-term) to the Linux audio community is that many formats due to their openness are not readily supported by the proprietary world as they have no profit-making value (i.e. Apple's DRM-ed AAC is safeguarded by Apple so that they can profit from licensing it to other companies and/or locking in their iTunes/iPod market). One final remark on Linux standards as a whole is that Linux holds an upper hand when it comes to longevity of their standards as they are not encumbered by the IP limitations imposed by a particular company and therefore directly dependant on the company's longevity. ---------------------------------------- Sorry for the messy spill of thoughts, hopefully you'll get the main points of my ideas. I am just too tired at this point to try to clean-up my prose. I would really appreciate your thoughts as well as any potential additions you may have. Many thanks! Best wishes, Ivica Ico Bukvic, composer & multimedia sculptor http://meowing.ccm.uc.edu/~ico/ --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.784 / Virus Database: 530 - Release Date: 10/27/2004

20 years

[linux-audio-user] Hi All!

by Miguel Angelo Brites Leong Ping

Hi All! I am new to this mailing list. I was making sound for two years, then i stopped. Now I am thinking of return, but want to try the *nix platform instead. In near future, im thinking of buying new computer, so then i'll install some distro of linux. For now i was just wondering if i can hear anyone's work on linux audio apps (mp3 pref.) demonstrating the potential of linux. thanks in advance ping

20 years

Re: [linux-audio-user] Re: [linux-audio-dev] How to automate hdsploader

by ico＠fuse.net

Thanks a lot for the help Paul! One more quick question though, has the issue with jackd + alsa + hdsp ever been fixed where jackd only allows 2 periods and no other number? Best wishes, Ico >Hence, I've been wondering what do I need to do to automate hdsploader as soon > as the cardbus has been connected? using the new modprobe.conf syntax .... install snd-hdsp /sbin/modprobe --first-time --ignore-install snd-hdsp && { /usr/bin/hdsploader; }

20 years

[linux-audio-user] Mixers (maybe)

by Laura Conrad

I had to rebuild my system a couple of weeks ago, and I'm having some trouble with sound. What I want to have work is my SBLive sound card under alsa. I did the install from a knoppix disk, and I boot it with the alsa option. I can play sounds using timidity, aplay, and realaudio (at least), and record using audacity. kmix seems to work correctly. However, when I try to run most of the mixers, I get error messages, and therefore I can't use sound apps that expect to be able to run a mixer. I seem to get all the same errors whether I'm root or a user, so I think the permissions are set up correctly. Here are some sample error messages: #pydance pygame.error: mixer system not initialized #pysol Traceback (most recent call last): File "/usr/share/games/pysol/pysolaudio.py", line 229, in startServer self.audiodev.init() error: unable to open audio: No available audio device PySol: could not connect to pysolsoundserver, sound disabled. root@tuba:/etc/init.d# ./alsa restart Storing ALSA mixer settings...failed. Starting ALSA..../alsa: Error: alsactl restore failed with message 'alsactl: load_state:1134: No soundcards found...'. done. root@tuba:/etc/init.d# [~]# alsamixer alsamixer: function snd_ctl_open failed for default: No such device [~]# [~]# amixer amixer: Mixer attach default error: No such device Does anyone have any idea what could be wrong? I've done a lot of googling, and these error messages aren't uncommon, but none of the suggested solutions seems to work for me. -- Laura (mailto:lconrad@laymusic.org , http://www.laymusic.org/ ) (617) 661-8097 fax: (501) 641-5011 233 Broadway, Cambridge, MA 02139

20 years

Re: [linux-audio-user] realtime-lsm module and 2.6.9-rc3-mm3-VP-T3 x86_64: wont boot

by thewade

> > I built and installed the lsm kernel ontop of T3, but on boot > > I get > > Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) > > This error cannot possibly be caused by the realtime LSM patch. > Are you sure the config matches your running config otherwise? Here is my diff config 3,4c3,4 < # Linux kernel version: 2.6.9-rc3-mm3-VP-T3 < # Sat Oct 23 21:30:53 2004 --- > # Linux kernel version: 2.6.9-rc3-mm3-VP-T3-lsm > # Sat Oct 30 19:54:32 2004 2082c2082 < CONFIG_SECURITY_CAPABILITIES=y --- > # CONFIG_SECURITY_CAPABILITIES is not set 2084a2085 > CONFIG_SECURITY_REALTIME=y I patched the source by hand, as patch using the diff Lee provided at http://lkml.org/lkml/diff/2004/10/8/243/1 complains of an incomplete patch Could the disks filesystem have some security setting that the kernel does not now have, post-patch? e.g. SECURITY_REALTIME=1 in include/linux/sysctl.h? Only a guess... Thanks for the help! I hope this enables my jackd to run in realtime without weird errors. -thewade

20 years

[linux-audio-user] Re: Save/restore ALSA mixer settings

by Timo Sivula

On Mon, 2004-11-01 at 01:05, > From: David Baron <d_baron(a)012.net.il> > A long time bug in recent kernels: Mixer settings have not been saved/restored > and everything comes up very silent. Just checking: you rememberd to do chkconfig alsasound after installning alsa? I had this very same problem after installing planet ccrma on my FC1 until I found out I had skipped the chkconfig part of the install. Timo

20 years

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Linux-audio-user October 2004