Linux-audio-user July 2004

linux-audio-user@lists.linuxaudio.org

172 participants
206 discussions

[linux-audio-user] Zaurus as an audio device?

by Laura Conrad

I just acquired a Zaurus 5500, and I'm wondering if anyone has gotten farther than I have using the Audio capabilities. What I'd like is to use it to play MIDI files, record practice sessions, and as a tuner and a metronome. Recording the practice sessions worked out of the box, with the single point stereo microphone I use with my minidisk recorder, and playing back with the compact portable speakers. There's an entry in the http://www.killefiz.de/zaurus/ software index for something that works as a tuner and a metronome, but the links are broken. And there are tantalizing references to using the libsdl mixer with some patches to do MIDI via timidity. Has anyone tried this? -- Laura (mailto:lconrad@laymusic.org , http://www.laymusic.org/ ) (617) 661-8097 fax: (501) 641-5011 233 Broadway, Cambridge, MA 02139

20 years, 5 months

[linux-audio-user] Thanks for help with Mandrake packages

by ejbjr

Thanks for the help. Apparently 'urpmi' is the real tool under 'rpmdrake' (the avoid-the-evil-command-line Mandrake GUI for package installation). Boy, wouldn't it be nice if we had a search engine that could take a description of what we want to do, and suggest a list of possibly interesting manual pages, html links, PDF documents, etc. I've sometimes spent days with Yahoo/Google scanning thousands of irrelavent pages to find the info I want. I've gotten a lot more useful info about linux in general on this mailing list by accident than I have searching. Unfortunately, I have limited time to deal with email lists. Maybe we need a search engine like Yahoo, which only finds linux-related documentation pages (I know I'm dreaming). e. j. branagan The MUSE - Nashville, TN

20 years, 5 months

Re: [linux-audio-user] Sorry Mr.Barber (was: CPU clock-beware)

by Matthew Barber

->Mr. Barber, It kind of seems that everyone (myself included) was distracted from the original subject that you posted. Anyway, on the CCRMA website it does say that some machines won't be able to run the "ll" kernel. As I said before, I just stumbled upon the fact that while my athlon won't run the "ll" athlon kernel (I had the same lockups you describe) it will run the "ll" i686 kernel. I don't have any idea what this does to system performance as far as music production goes, since my limited amount of music recording experience is on Windows and Cubase, and my boss won't even entertain the thought of using Linux, or at least giving it a try. So I don't have anyway of testing the i686 kernel with the athlon in a realworld situation. Rick B<- I will keep this in mind. I imagine this requires installing the kernel and ALSA RPMs from the website rather than with apt-get. For now passing "nolapic" to the kernel at boot-time seems to be working like a charm, but not when I overclock. I don't really have any need to overclock right now, though - just wanted to test its stability. And it ain't stable. Thanks, Matt

20 years, 5 months

[linux-audio-user] Sorry Mr.Barber (was: CPU clock-beware)

by Rick B

Mr. Barber, It kind of seems that everyone (myself included) was distracted from the original subject that you posted. Anyway, on the CCRMA website it does say that some machines won't be able to run the "ll" kernel. As I said before, I just stumbled upon the fact that while my athlon won't run the "ll" athlon kernel (I had the same lockups you describe) it will run the "ll" i686 kernel. I don't have any idea what this does to system performance as far as music production goes, since my limited amount of music recording experience is on Windows and Cubase, and my boss won't even entertain the thought of using Linux, or at least giving it a try. So I don't have anyway of testing the i686 kernel with the athlon in a realworld situation. Rick B

20 years, 5 months

Re: [linux-audio-user] CPU clock - beware

by Matthew Barber

->I looked through your manual and I think you can't really go any higher without doing anything that could be considered overclocking *shrug*. You could for example up your fsb to 75 mhz but your memory and everything else may not like it. Don't blame me if you blow up your computer.<- Be careful doing something like that, especially with old boards. I think setting the fsb clock to "no man's land" will set the pci clock (and AGP if you have AGP on your board) to something unusable, unless BIOS locks the PCI/AGP clock to a certain range of values. PCI generally wants to run at about 33Mhz (unless you have a very new board with PCI-X or some such), and AGP at 66Mhz, and these values will generally be a fraction of the fsb. So if your fsb is 66Mhz, PCI will be 1/2FSB. If it's 100Mhz, PCI will be 1/3. Setting it to 75Mhz may cause it to still be in the 66Mhz realm as far as the division is concerned, and set PCI to around 38Mhz, which may cause a lot of problems. I know some BIOS will take care of this by locking AGP and PCI to a certain value, but I wouldn't count on it with an older board/bios. I see no problem with 100Mhz if your processor and memory both support it. Before fooling around with stuff, make sure you know how to clear your CMOS (on most boards there's a little jumper, I think) to the default values, in case you set it to something that doesn't even allow your bios to start. M

20 years, 5 months

Re: [linux-audio-user] CPU clock - beware

by Matthew Barber

->"bogomips" issome weird timing value I have no idea what it means exactly<- Try this: http://www.tldp.org/HOWTO/BogoMips.html M

20 years, 5 months

[linux-audio-user] Re: Mandrake Packages

by ejbjr

>} To be the quintesential dumb bunny again...So on MDK, I would use >} Kpackage to install MDK rpm's only? Or could I use .deb or RH or what >} ever other packages to install to my MDK system? I know this is a >} stretch even as I write it. But I've written it....and what is written >} must be ........sent! > > I don't know... I think Mandrake's pretty particular. You can't escape all of >the Mandrake rpms on the net though... I doubt you'd have a problem. > > > Is it even possible to download a Mandrake RPM? Every time I try to download an audio package from a Mandrake repository it complains that I don't have the necessary dependency packages installed on my internet machine, and asks me to insert one of more of the Mandrake 9.2 discs into my cdrom drive. After installing packages I don't really want on my internet machine, I click on the download link and it *INSTALLS* the package I want to put on my audio machine at home on my internet machine. YUCK. Is there any way to download these packages so I can burn them to a CD and bring them home to my audio machine? Or maybe repackage them from the installed copy? My audio machine at home is not on the internet, and never will be due to the presence of unreleased audio tracks - no network connection is the most reliable firewall ever created. Evey time I move a desktop machine I always have trouble getting it back up and running again. I have quite a few friends who do this regularly, but they have custom built machines in shock mounted cases (as my next one will be; my current machines are rebuilt slavage in commercial cases). e. j. branagan The MUSE - Nashville, TN

20 years, 5 months

[linux-audio-user] Re: Room Acoustics

by ejbjr

>> I think one other issue is wave cancelation but I'm >> not so sure about this. Assume a 12 foot long room >> with source against one wall. Cancelation will occur >> where the waves meet which is at six feet. So, you >> don't want to locate the mixing chair in the >> cancelation zone. >> > <SNIP> > Very true, actually, assuming you have a frequency that is a multiple > of the room length. > Wall to wall reflections tend to disperse. Most room resonences are corner to corner (in a box-like room). Sound behaves a lot like light in a three-way right angle corner - It comes back out the same direction it went in, just like those three way mirrors they use to reflect laser beams back from the moon. Most studios these days try to avoid any right-angle corners. e. j. branagan The MUSE - Nashville, TN

20 years, 5 months

[linux-audio-user] minimum requirement for a real-time FX processing machine

by caffeine

Hi everybody, first of all thanks for your answers to my previous posts. Now that I'm having fun playing around with a bass guitar and ecasound, I'm thinking about buying an old laptop to use during rehersals and maybe gigs. I'm wondering what kind of hardware would do the trick. I'm kind of broke so the older (i.e. cheaper) the better (it would just run a shell, a tweaked kernel, JACK and FX processing stuff). I guess I may run into problems with obsolete sound cards (an area I'm not much knowledgeable in) and probably other issues I don't know about yet... Anybody has any experience/knowledge to share ? What would be the absolute minimum requirement for you ? btw, I'm also wondering about vibrations damaging the hardware, particularly the HD (the box would sit on top of a bass amp, or at least not so far from it) What do you think about it ? Thanks for taking the time to read this.

20 years, 5 months

[linux-audio-user] Re: Live Recording headphones

by ejbjr

OK, we've had a lot of good discussion about good studio headphones. How about good headphones for live multitrack recording in a very loud room. Good isolation and relatively high volume. e. j. branagan The MUSE - Nashville, TN

20 years, 5 months

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Linux-audio-user July 2004