Re: [linux-audio-dev] Prony algorithm?
On Mon, 05 Jul 2004 22:01:29 +0200 [EMAIL PROTECTED] (Albert Graef) wrote: > What where the specific problems you encountered? I've never tried > wavelets for the purpose of spectrum estimation, so it would be very > kind if you could share your experiences. The results I obtained with wavelets were never as good as the results I was able to obtain with FFT based methods. Erik -- +---+ Erik de Castro Lopo [EMAIL PROTECTED] (Yes it's valid) +---+ "Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it." --Brian Kernighan
Re: [linux-audio-dev] Prony algorithm?
Erik de Castro Lopo wrote: This floated by a month or so back: http://ab-initio.mit.edu/harminv/ Thanks, that looks like a viable alternative, I'll have a look at that. I have messed with wavelets (dyadic and the discrete approximation of continuous wavelets) and I always found that they never lived up to their reputation. What where the specific problems you encountered? I've never tried wavelets for the purpose of spectrum estimation, so it would be very kind if you could share your experiences. Albert -- Dr. Albert Gr"af Dept. of Music-Informatics, University of Mainz, Germany Email: [EMAIL PROTECTED], [EMAIL PROTECTED] WWW:http://www.musikwissenschaft.uni-mainz.de/~ag
Re: [linux-audio-dev] Prony algorithm?
Niklas Werner wrote: You can play around with comparing LPC and FFT results at different settings by using my software :-) http://sonasound.sf.net/ Thanks, I'll try that, too. -- Dr. Albert Gr"af Dept. of Music-Informatics, University of Mainz, Germany Email: [EMAIL PROTECTED], [EMAIL PROTECTED] WWW:http://www.musikwissenschaft.uni-mainz.de/~ag
Re: [linux-audio-dev] NPTL/2.6 (was snd-hdsp oddities)
--- Fernando Pablo Lopez-Lezcano <[EMAIL PROTECTED]> wrote: > On Mon, 2004-07-05 at 09:24, Michael Ost wrote: > > On Thu, 2004-07-01 at 19:16, Paul Davis wrote: > > > When the dust settles from the kernel and NPTL, 2.6 will be > more > > > viable. Right now, even though it works for some people, its > not a > > > generally viable platform for realtime audio. > > > > What sort of issues are you seeing with NPTL and the 2.6 kernel? > Are > > there stability problems? Functionality problems? I thought I had > heard > > the NPTL/2.6 was working fine. > > What I'm seeing is, sometimes, xrun storms (this is using 2.6.7 + > some > extra patches, lsm for realtime as non-root, recent alsa, qjackctl > for > starting and running jack). One of them I think I have tracked to > an app > running into denormal problems on a PIV. I still don't know for > sure > which part of the system is contributing to the problem (jack / > nptl / > alsa). On the same hardware with an older glibc and 2.4.x with low > latency patches I don't see the same problems (but the whole distro > is > different, FC1 vs FC2). > > Some users have had good experiences with 2.6.x by turning off nptl > with > the LD_ASSUME_KERNEL trick, but they get lousy performance (ie: > lots of > xruns) with nptl on. > > -- Fernando > > >
Re: [linux-audio-dev] NPTL/2.6 (was snd-hdsp oddities)
On Mon, 2004-07-05 at 09:24, Michael Ost wrote: > On Thu, 2004-07-01 at 19:16, Paul Davis wrote: > > When the dust settles from the kernel and NPTL, 2.6 will be more > > viable. Right now, even though it works for some people, its not a > > generally viable platform for realtime audio. > > What sort of issues are you seeing with NPTL and the 2.6 kernel? Are > there stability problems? Functionality problems? I thought I had heard > the NPTL/2.6 was working fine. What I'm seeing is, sometimes, xrun storms (this is using 2.6.7 + some extra patches, lsm for realtime as non-root, recent alsa, qjackctl for starting and running jack). One of them I think I have tracked to an app running into denormal problems on a PIV. I still don't know for sure which part of the system is contributing to the problem (jack / nptl / alsa). On the same hardware with an older glibc and 2.4.x with low latency patches I don't see the same problems (but the whole distro is different, FC1 vs FC2). Some users have had good experiences with 2.6.x by turning off nptl with the LD_ASSUME_KERNEL trick, but they get lousy performance (ie: lots of xruns) with nptl on. -- Fernando
Re: [linux-audio-dev] NPTL/2.6 (was snd-hdsp oddities)
On Thu, 2004-07-01 at 19:16, Paul Davis wrote: > When the dust settles from the kernel and NPTL, 2.6 will be more > viable. Right now, even though it works for some people, its not a > generally viable platform for realtime audio. What sort of issues are you seeing with NPTL and the 2.6 kernel? Are there stability problems? Functionality problems? I thought I had heard the NPTL/2.6 was working fine. Cheers... mo
Re: [linux-audio-dev] LSM 2004 music theme: July 8th/9th
Le lun 05/07/2004 à 15:59, Frank NEUMANN a écrit : > Hi all, > Francois wrote: > > > The complete program is there: > > http://prog.lsm2004.abul.org/program/view_topic.php?topic_id=4&langnew=en > > To ask the obvious question here :-) - > will there be live audio broadcasts from this event? Would be cool to attend > such a meeting virtually myself for the first time :-). > > Greetings, > Frank Hi all, We'll do our best to setup a live audio broadcast + irc. But I cannot guarantee you that it will work. We'll announce on both the program page (see url above) and on http://freesoftware.ircam.fr the stream url. Stay connected starting on wednesday 9am (french time) to see if the event is broadcasted. Greetings, François
Re: [linux-audio-dev] LSM 2004 music theme: July 8th/9th
Hi all, Francois wrote: > The complete program is there: > http://prog.lsm2004.abul.org/program/view_topic.php?topic_id=4&langnew=en To ask the obvious question here :-) - will there be live audio broadcasts from this event? Would be cool to attend such a meeting virtually myself for the first time :-). Greetings, Frank
Re: [linux-audio-dev] LSM 2004 music theme: July 8th/9th
The complete program is there: http://prog.lsm2004.abul.org/program/view_topic.php?topic_id=4&langnew=en fd Le dim 04/07/2004 à 21:48, Paul Davis a écrit : > I thought it might worth mentioning 2 days of intense LAD-friendly > talks at the Libre Software Meeting on July 7th and 8th. The program > will include: > > Dave Phillips on "The Scene" > Yann Orlarey on Faust > Takashi Iwai on ALSA > Steve Harris on RDF & Audio > Julien Villain on Gestural/Listening training > Paul Davis on Ardour (talk + 2hr workshop) > Julien Ottavi on APODIO > Damien Cirotteau on AGNULA > > If you're in the Southwest corner of France and want to come and fill > the rooms just a little more, not to mention sample of the "young > upstart" red and white wines of the region (quite a political battle > in the region, apparently), check with lsm2004.abul.org. A glass of > decent wine will be considered partial downpayment on your copy of the > Ardour manual :) > > --p > > >
