Linux-audio-user April 2005

linux-audio-user@lists.linuxaudio.org

163 participants
185 discussions

[linux-audio-user] Re: [linux-audio-dev] Other real-time options

by Lee Revell

On Fri, 2005-04-08 at 23:23 -0400, Jean-Marc Valin wrote: > > If being an audio developer carried any weight with these people, > > you'd think they would listen to Paul Davis or Lee Revell or me. They > > don't. > > Then, they might listen to Paul Davis, Lee Revell, you, me, authors of > Vorbis, Theora, GnomeMeeting, and so on at the same time. > > > Con Kolivas is one of the good guys. But, the "arrogant fools" don't > > listen to him much, either. > > As far as I see, Con is mostly having problems showing that there's an > interest. The fact that I'm the only person that tried his new scheduler > didn't help. > I respectfully disagree with this interpretation. Everyone on LKML seemed to agree that Con's scheduler was the best solution proposed, but will have to wait for 2.7 as it's too intrusive for 2.6. The only question now for 2.6 is whether the realtime LSM or the rlimit based solution will be accepted. Personally I prefer the realtime LSM but would accept the rlimit based approach. It puts more of a burden on the distro/sysadmin to configure, as it requires patching PAM and bash and a correct limits.conf configuration. But from the users point of view the end result is the same (configure a "realtime" or "audio" group and add users to it). What I don't understand is that the people that the kernel developers *do* listen to by default aka the big distros like Red Hat and SuSE, did not weigh in sooner on this issue. I suspect that specialized needs like low latency audio are not too high on their priority list. The "desktop people" at Red Hat still seem to be focused on making the basic user experience compare favorably to Windows and Mac OS - if the average laptop can't even boot FC3 and have all the hardware work, they can't be too worried about the 0.1% of users who want to use their laptop for live performance. Lee

20 years, 1 month

[linux-audio-user] Re: [linux-audio-dev] Other real-time options

by Jack O'Quin

Jean-Marc Valin <Jean-Marc.Valin(a)usherbrooke.ca> writes: > First, please stop this "arrogant lkml-people" attitude, it won't help. > Second, I would think that instead of a petition with just lots of names > on it, I would prefer a letter signed by the maintainers of as many > Linux projects as possible, i.e. not signed as "Jean-Marc Valin", but > "Speex maintainer" (Jack maintainer, GnomeMeeting, ...). I'm sure this > would give a lot more weight to the proposition. If being an audio developer carried any weight with these people, you'd think they would listen to Paul Davis or Lee Revell or me. They don't. Con Kolivas is one of the good guys. But, the "arrogant fools" don't listen to him much, either. Go slowly demanding new scheduler hackery. Ingo and Con both have good ideas, but neither scheduler worked well enough for prime time in my testing a couple of months ago. -- joq

20 years, 1 month

[linux-audio-user] Re: [linux-audio-dev] Other real-time options

by Kjetil Svalastog Matheussen

Jean-Marc Valin: > Hi, > > I think a part of the conversation I had with Con Kolivas may be of > interest here: > > > <jmspeex> I still don't understand why this [unprivileged real-time] > hasn't gone in the kernel a long time ago. > <----> > <con> jmspeex since lkml is so hopeless as a forum for that sort of > thing, feel free to start an online petition to show how many people > there are. 1 of 2 things will happen - 1. you'll have thousands signing > up, or 2. there are less people doing it than you think This shouldn't be a problem. There are about 2300 subscribers to the linux-audio-user mailing-list: http://www.linuxdj.com/audio/lad/subscribe.php If someone sets up this forum, and more than twice of us sign up, that should show those arrogant lklm-people that there are really _a lot_ of us, and that we are strong, and very angry. Hah!

20 years, 1 month

[linux-audio-user] musica e software livre no rio de janeiro...

by criscabello .

Caros, venho por meio dessa convidá-los para a oficina q estarei fazendo no rio sobre musica e software livre entre os dias 20 a 23 de abril. Talvez o assunto interesse a alguém poraqui :),,, Estou montando o programa aqui: http://estudiolivre.utopia.com.br/tiki-index.php?page=Oficina+de+%C3%81udio… Qualquer sugestão, opinião ou crítica será mais do que bem vinda! Aliás a idéia é q este programa (assim como o próprio estuolivre.org) seja um local para consulta pública e q seja alimentado pelas mais diversas fontes. Apareçam! Divulguem! Vamos tomar uma no Rio de Janeiro! abs cris ========================= Residência/Oficina + Cris Scabello & Capimville Conectando a rede... Rio de Janeiro 20 a 23 de abril (horários a definir) http://www.midiatatica.org/ip/index.php?id=10,11,0,0,1,0 Scabello faz parte do Dubversão Sound System, além de ser pesquisador do IPTI - Instituto de Pesquisa em Tecnologias da Informação da USP, e há 2 anos vem desenvolvendo trabalho de gravacao e composicao em Software Livre como programas como Ardour, Jack, Freebirth entre outros. Foi responsável pela gravação, junto do Capimville, de toda a programação musical do festival Digitofagia, realizado no MIS - Museu da Imagem e do Som em São Paulo, e já fez sessões de gravação em software livre com o Ministro da Cultura, Sr. Gilberto Gil. Durante a residência, Scabello auxiliará músicos e interessados em som em geral na migração para software livre, além de dicas, cerveja e som. Durante a sua residência Cris dará uma oficina: MÚSICA E SOFTWARE LIVRE Esta oficina pretende apresentar um panorama geral sobre as ferramentas livres de produção musical oferecidas em software livre, assim como abordar temas pertinentes em relação à música, no que diz respeito ao desenvolvimento tecnológico e cultural nos dias de hoje. Esta oficina deve fornecer instrumental básico à produção em audio com o uso do software livre e, principalmente, ao compartilhamento do conhecimento gerado a partir da produção de bens culturais livres. Proporcionando aos musicos, produtores, djs, radialistas, locutores, contadores e cantadores em geral, produzirem suas próprias musicas, trilhas, vinhetas, programas de rádio, etc, e trocarem essas experiências entre si. Essa oficina pretende oferecer informações técnicas sobre produção musical como incentivo para que as pessoas gravem suas próprias musicas e troquem estas músicas entre si como forma compartilhada de construção de um bem cultural-artístico-musical. A oficina de 3 dias (20 a 23 de abril /04 (quatro) horas por dia, culmina em uma apresentação no dia 24, das 14 às 17h. Libertas quae sera tamem! = A oficina de Cris Scabello tem um valor sugerido de R$30/40, colaboração que será apreciada e revertida para o oficineiro e futuras atividades. O Curso de Somaterapia será administrado pelo grupo proponente, e-mail de contato: wakaplot-AT-yahoo.com.br. As demais atividades são gratuitas, no entanto qq colaboração é bem-vinda.

20 years, 2 months

[linux-audio-user] Re: [linux-audio-announce] kluppe 0.4

by d13b

hello! i post to linux-audio-user instead of -announce i fixed the missing kluppe.png and uploaded a new tarball (0.4.1) being kicked off by jack is bad. low latencies are hard to test for me, because my hardware forces me to run -p 1024 or even -p 2048. is there any difference between 0.3 and 0.4 for you? is there any specific situation (e.g. loading files or opening new loopers) that results in kluppe being dropped by jack? regards d13b Esben Stien wrote: > d13b <kluppe(a)klingt.org> writes: > > >>kluppe 0.4 is out > > > I have to run with extremely high latencies to have it work without > being kicked off by jack (-p 1024). I'm on linux-2.6.11-RT-V0.7.40-00 > and CVS of jack yesterday. I'm also running with realtime priority 99. > > >>please let me know if you need help, find bugs or desperately miss >>features. > > > The kluppe.png file is missing: > > install -m 644 kluppe.png /usr/local/share/pixmaps > install: cannot stat «kluppe.png»: Ingen slik fil eller filkatalog > make: *** [install] Error 1 >

20 years, 2 months

[linux-audio-user] strange noise at hdd access with mpg123

by Gregor Hyneck

Hi I'm running an old PC as a standalone mp3-player. The system is very silent except the hdd (new Samsung SV1604N, 160GB, 5400UPM) access when running mpg123. This produces a monotone, awful noise. With other mp3-player like xmms there's no problem. But the irmp3 (audio jukebox-daemon) on the mp3-player depends on mpg123. I tried other versions of mpg123 and mpg321 - no improvement. Can I solve the problem with another hdd? Any other recommendation?

20 years, 2 months

[linux-audio-user] Install problem dssi-vst on Fedora Core 3

by David Edvardsen

Hi, This is my first time using Linux, and I've run into a problem installing dssi-vst on Fedora Core 3. I have the lowlatency kernel from Planet Ccrma installed I have never compiled anything before so please use simple language :-) This is what I get when I run ./configure checking whether make sets $(MAKE)... yes checking for gcc... gcc checking for C compiler default output file name... a.out checking whether the C compiler works... yes checking whether we are cross compiling... no checking for suffix of executables... checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether gcc accepts -g... yes checking for gcc option to accept ANSI C... none needed checking for g++... g++ checking whether we are using the GNU C++ compiler... yes checking whether g++ accepts -g... yes checking how to run the C preprocessor... gcc -E checking whether ln -s works... yes checking for sqrt in -lm... yes checking for iswalnum in -lw... no checking for gethostbyname... yes checking for connect... yes checking for gcc strength-reduce bug... no checking whether we can build a Linux dll... yes checking whether we need to define __i386__... checking for egrep... grep -E no checking whether we need to define __sparc__... no checking whether we need to define __sun__... no checking for g++ -fpermissive option... yes checking for g++ -fno-for-scope option... yes checking for windef.h header... /usr/include/wine/windows checking for -lwine... checking for wine_cp_wcstombs in -lwine_unicode... yes checking for libntdll.def... /usr/lib/wine checking for wine... /usr/bin/wine checking for winebuild... /usr/bin/winebuild checking for wrc... /usr/bin/wrc configure: creating ./config.status config.status: creating Make.rules config.status: creating Makefile Configure finished. Do 'make' to build the project. This is what I get when i try to run make sed -e 's,@bindir\@,/usr/local/bin,g' -e 's,@winelibdir\@,.,g' ./apploader.in >apploader || rm -f apploader LD_LIBRARY_PATH=":$LD_LIBRARY_PATH" /usr/bin/winebuild -o dssi-vst-server.exe.dbg.c --debug -C. dssi-vst-server.cpp gcc -c -I. -I/home/david/Audiowarez/vstsdk2.3/source/common -I/usr/include/wine/windows -g -O2 -fPIC -D_REENTRANT -o dssi-vst-server.exe.dbg.o dssi-vst-server.exe.dbg.c g++ -c -I. -I/home/david/Audiowarez/vstsdk2.3/source/common -I/usr/include/wine/windows -g -O2 -fpermissive -fno-for-scope -D_REENTRANT -o dssi-vst-server.o dssi-vst-server.cpp LD_LIBRARY_PATH=":$LD_LIBRARY_PATH" /usr/bin/winebuild -fPIC -o dssi-vst-server.exe.spec.c --exe dssi-vst-server.exe -mgui dssi-vst-server.o -L/usr/lib/wine -L/usr/lib/wine -ladvapi32 -lcomdlg32 -lgdi32 -lkernel32 -lodbc32 -lole32 -loleaut32 -lshell32 -luser32 -lwinspool winebuild: executable must be named via the -F option make: *** [dssi-vst-server.exe.spec.c] Error 1 Is there anyone out there that can help me get past this problem??? Any hints to what I am doing wrong????

20 years, 2 months

[linux-audio-user] Line6 POD XT Live

by Noah Roberts

I just got a POD and am wondering if any of the special computer features work in Linux at all. For instance, direct recording through USB or maybe the port program.

20 years, 2 months

[linux-audio-user] LAC 2005 streaming: please test!

by Joern Nettingsmeier

hi everyone! we are currently setting up a stream network for lac2005 (http://lac.zkm.de) since we are trying to provide video streams for the first time, i would welcome testers to shake out any problems beforehand. our master server is currently open for public testing at http://lac2005.zkm.de:8000. in order to conserve bandwidth, the number of clients is limited. there is one video (un chien andalou by salvador dali) and one audio stream (the jazz tune "melancia" played by a friend of mine) streamed in two different bitrates each. please test them (especially the video stream). since theora streaming is quite bleeding-edge, few distros will support it out-of-the-box. in order to generate some documentation for stream users, we have borrowed frank barknechts wiki, please go to http://footils.org/cms/pydiddy/wiki/LinuxAudioConference2005 and add hints for your own distro. ! note that after this initial test period, the master server will be closed to the public again. during the conference, only relays will be given access. you can tune to one of the relays instead. urls will be posted real soon now. anticipating some bug reports: * yes, the video is black-and-white. * yes, there is some (intentional) distortion in the audio stream. * yes, there is currently no metadata displayed. * yes, the streams are not continous, i.e. your player will quit after the piece ends. * yes, you will see greenish garbage at the beginning. that's your player waiting for a theora keyframe. like last year, there will be irc channels: #lac2005 @ irc.freenode.net for general conference issues and feedback from remote conference participants #lac2005-tech @ irc.freenode.net for stream-related technical issues if you have problems or success stories, share them on the lists or on irc. best, jörn

20 years, 2 months

Re: [linux-audio-user] sing notes to a synt?

by Gilles Degottex

On Thursday 07 April 2005 11:25, Jorge Salgueiro wrote: > > I'm a fan of this research domain, I was busy these months to work on my > > projects, but I see I'll get time this summer and maybe a bit earlier. > > > I believe that this domaind will be very interessing for future music > (at least as i see future music...), especially in a live net jamming > context... yes, I think too and I see futur effects coming from here. It could be really fun to duplicate voices or instruments with other ones like a little sax effect over a singer.

20 years, 2 months

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Linux-audio-user April 2005