Linux-audio-user December 2009

linux-audio-user@lists.linuxaudio.org

166 participants
190 discussions

by Folderol

Some sleepless nights, and grotty weather finally pushed me into thinking about redesigning my website. I have a trial page up that I would be grateful if some of you would look at with different browsers. Because of the way it uses javascript I suspect there may be problems with text readers - but again I would like to know if there are. You should see a dark blue background with some pale yellow text at the top, followed by 4 lines of buttons. A title, two downloads and a play. Hovering over the title should display some text underneath, that should be clear of this button, and the one below. Hovering over the download links should make their centres turn pale yellow and display 'ogg' and 'mp3' respectively. Hovering over the play should make it's centre turn pale yellow Clicking on the downloads should offer the respective file type for download. Clicking on play should make it turn into the pause icon and start playing the track (via flash). The pause button should turn back into play when the track finishes or if another track is selected. Almost forgot! The url is: http://www.musically.me.uk/testmanager.html -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song.

15 years, 4 months

MIDI Playback freezes

by Bob van der Poel

Oh no ... I had this problem a few years ago and thought it'd been fixed (forever!). But, since "upgrading" to ubuntu 9.10 I've had a few freezes again. I've got a 24/96 audiophile card which is sending the midi to an external synth. No Jackd, but pulseaudio is running. Stock kernel 2.6.31-14-generic. Now, when I had the problem before I solved it by NOT running the RT to multi-media kernel. This this that isn't the problem.... When the freeze happens it kills the computer completely. I could probably log in via a terminal or network, but haven't tried that. The video does display, but the keyboard/mouse is gone. The only way out is to hit RESET. Ideas???? Big problem is that it happens very occasionally. Last time was several weeks ago. Hopefully, the next time will be a long time in the future! -- **** Listen to my CD at http://www.mellowood.ca/music/cedars **** Bob van der Poel ** Wynndel, British Columbia, CANADA ** EMAIL: bob(a)mellowood.ca WWW: http://www.mellowood.ca

15 years, 4 months

How do I install kernel 2.6.32

by Martin Horn

Hi All, I need a 2.6.32 kernel for my soundcard to run, but I can't find it by: apt-cache search linux-headers only 2.6.28 is available on my ubuntustudio 8.04 machine and 2.6.31 on my 64studio 3.0 machine. How can I get a 2.6.32-rt kernel? Do I have to compile it myself? Thanks, Martin

15 years, 4 months

jack + vanilla kernel

by Josh Lawrence

quick question: if you are using jack with a vanilla kernel, should you still keep the realtime option enabled in jack, or run jack without the -R? my reasoning tells me that no realtime patch = no realtime in jack, but I just wanted to check myself with you all... -- Josh Lawrence http://www.hardbop200.com

15 years, 4 months

Re: [LAU] 64-bit improves audio performance?

by sonofzev＠iinet.net.au

Are you sure it's 64 bit that is actually making an improvement. If the distros are the same then this maybe a fair comparison, however if they are different distros being compared I doubt that the performance difference is a result of 64 bit versus 32 bit. I have run both and not been able to notice any substantial difference with almost identical Gentoo installs. Even on a system with 4GB of RAM using highmem, there is no perceivable difference. My installs are tuned for audio work, I haven't had issues with latency for a number of years now.. On Fri Dec 18 15:50 , "Jonathan E. Brickman" sent: >Well. No change in Jack behavior with LXDE, no change from total >removal of Pulse. Now I really wonder. 64-bit has definitely upped my >GUI speed, often tripled my WWW speed -- but it has either not touched >audio (synth and Jack) performance and latency, or has hurt it >slightly! Anyone seen the same thing? > >J.E.B. > >>>> Should CONFIG_HPET_EMULATE_RTC be set to n on a realtime kernel? Is >>>> there something else which might invalidate CONFIG_HPET=y ? >>>> >>>> >>> the RTC device is unrelated to HPET. your kernel can have HPET support >>> but if your h/w doesn't, you don't get /dev/hpet. My motherboard, for >>> example, does not have an HPET device. >>> >>> >> That is interesting. I am interested principally because I'm seeing >> xruns and am hunting for causes, and that stood out. >> >> Checked the BIOS; HPET is there, already turned on. Running the >> vanilla-install Debian Testing (AMD64) kernel, package >> "linux-image-2.6.30-2-amd64" version 2.6.30-8, I do have a /dev/hpet. >> Running any of six or seven slightly different but very clean rtlinux >> builds (vanilla kernel source of 2.6.31.6, plus rtlinux >> patch-2.6.31.6-rt19.bz2), .config options verified and reverified very >> carefully, I don't have a /dev/hpet. Anything I should check? Do you >> think I should get on a kernel dev list? >> >> But I understand now that hpet may have little or nothing to do with the >> xrun problem. At least part of the symptomatology, is that Pulse >> talking to Jack on 64-bit Debian Testing / Gnome with GUI sound events >> off, seems to eat a whole lot more of Jack's DSP capacity than the same >> combination on 32-bit / LXDE. On 32-bit, Pulse at idle ate zero CPU; >> now on 64-bit, Pulse at idle is eating about 2%. I'm wondering right >> this minute if Gnome keeps its default sound open, delivering full-bore >> (albeit silent) audio even when it's told not to do so. >> >> I suppose I'll try LXDE. But any suggestions will be very much appreciated. >> >> J.E.B. >> >> _______________________________________________ >> Linux-audio-user mailing list >> Linux-audio-user(a)lists.linuxaudio.org >> http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user >> > >_______________________________________________ >Linux-audio-user mailing list >Linux-audio-user(a)lists.linuxaudio.org >http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user >)

15 years, 4 months

Re: [LAU] [LAD] Anyone have experience with OSS (3 or 4)?

by Jonathan E. Brickman

> Well, depends on definition. > http://www.4front-tech.com/ > Seems to be pretty active still, and AFAIK the only way to have cross > platform interface to audio drivers... > > IMO, ALSA is a bit failed in a way that it is Linux-only. > The acronym ALSA stands for "Advanced Linux Sound Architecture". Its primary purpose is _not_ to be an _interface to_ audio drivers. Its primary purpose, is to be a _collection of_ audio drivers; and it does this very well. There are several cross-platform interfaces to audio drivers out there. Any developers care to suggest a few really good ones which do Linux/ALSA, Mac, and Windows? J.E.B.

15 years, 4 months

jack2 .deb package?

by Jonathan E. Brickman

Anyone know of a jack2 .deb package? Hopefully part of a good repo? J.E.B.

15 years, 4 months

LAM annual Best of mix 2009

by Patrick Shirkey

Hi, I have been attempting to keep track of all the releases posted over the past year since the inaugural Linux Audio Musicians Best of mix was released in Nov 08. I'm pleased to announce that the latest Annual Best of Mix for 2009 is now up for your listening pleasure. http://djcj.org/audio/lam - In general the level of craftsmanship and musicality has improved greatly over the past year. Nice work everyone!!! - I'm open to suggestions for more music to add to the mix and please let me know if you spot any mistakes. Cheers. -- Patrick Shirkey - DJ Kotau Boost Hardware Ltd - DJCJ . ORG

15 years, 4 months

Aquaria Open Beta for Linux (A very good game)

by Nils Hammerfest

http://www.bit-blot.com/?p=249 As a game-composer/musician I want to inform you that a really good indie-game, Aquaria, has released an Open Beta for the Linux version. This can be played completly and is not stripped. I have played this game two years ago (on Windows) and I really enjoyed it. Its not Free Software but its Indie which is already very "open" for Gamedevs on Windows. So if you want to see Gaming on Linux (and not gaming as in "SuperTux", "TuxRally" or any other title with "tux" in its name...) try the Beta and leave a comment on the site to encourage them. Or just leave a comment and try not to bring a hardcore-GNU attitude to their site, I think they don't know how to handle this :) Nils

15 years, 4 months

Re: [LAU] Native Linux VSTs !!

by cern

i've been playing around with some linux vst plugins lately: http://sites.google.com/site/ccernnaudio/vst-plugins with full source, of course (as examples with the axonlib) (except the vstsdk, which must be picked up from steinberg manually) a lot more to come - ccernn

15 years, 4 months

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Linux-audio-user December 2009