Linux-audio-dev

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3 participants
7520 discussions

[linux-audio-dev] Re: Tascam US428 Hangup

by Spencer Russell

I got the latest alsa-drivers from CVS, compiled and installed them, and it's still freezing up. I can have the modules loaded for as long as I like, but it's when I start jack that it seems to have problems. Most recently, I started qjackctl, it worked until I started Ardour, at which point qjackctl died. I killed and restarted jackd, and as soon as I started jackd my computer froze. Every time it freezes like this, my caps lock and scroll lock lights blink together. I got the same -11 error message again, but this time it happened a few minutes before the freeze, the first time I started jack. I ran xmms with the alsa output plugin and after a minute or 2 the audio stopped with the message on syslog: kernel: ALSA usbusx2yaudio.c:211: usb_submit_urb() returned -11 kernel: usb-uhci.c: uhci_submit_urb: pipesize for pipe f0000 is zero kernel: ALSA usbusx2yaudio.c:211: usb_submit_urb() returned -90 kernel: usb-uhci.c: uhci_submit_urb: pipesize for pipe f0000 is zero kernel: ALSA usbusx2yaudio.c:211: usb_submit_urb() returned -90 any ideas on what this means, or other useful tests I could run? Thanks, spencer

21 years, 1 month

[linux-audio-dev] [ANN] JJack 0.2 - Java for JACK update

by Jens Gulden

Hello, an update of JJack - Java bridge API for JACK has been released. http://jjack.berlios.de/ Version 0.2 integrates much better with the JACK thread architecture. The JACK processing-thread now itself executes Java code inside the Java virtual machine, after it has been attached to it calling AttachCurrentThread(..). (Thanks to Stéphane Letz for giving a hint about that.) Enjoy and make noise, Jens

21 years, 1 month

[linux-audio-dev] libsndfile-1.0.11 and SD2 files

by Erik de Castro Lopo

Hi all, A new version of libsndfile was released just yesterday. I normally don't announce new versions here, but this release has one new feature which requires a bit of a special mention. With this release, libsndfile now supports the Sound Designer II file format as used by Apple Macintosh audio programs like Protools and Digital Performer. There are a couple of caveats with this format as described here: http://www.mega-nerd.com/libsndfile/FAQ.html#Q013 I now also have a Gnu Arch (like CVS but better) repository and there are some very brief instructions for accessing it here: http://www.mega-nerd.com/libsndfile/development.html I hope to expand that page in the near future. Cheers, Erik -- +-----------------------------------------------------------+ Erik de Castro Lopo nospam(a)mega-nerd.com (Yes it's valid) +-----------------------------------------------------------+ I have found that good programmers either do not make the kind of mistakes that Ada can prevent, or insert enough checks that they catch those mistakes about as efficiently as an Ada environment can. At that point, the use of Ada gives no further productivity advantage.

21 years, 1 month

[linux-audio-dev] RE: [OT] Wired GPL Audio/MIDI sequencer

by Kjetil Svalastog Matheussen

Mathias Lundgren: > sön 2004-11-14 klockan 02.21 skrev Ivica Ico Bukvic: > > > According to the website, LADSPA will not be supported because of UI > > > issues. > > > > While we're talking about LADSPA UI stuff, has there been any progress on > > this matter? News like this one obviously point to the LADSPA's currently > > greatest weakness of not endorsing any of the UI's and/or not having a > > standard one to go by. At this point perhaps I should make a quote from the > > Half-Life game, "it's time to choose Mr. Freeman..." :-). > > > > MusE also has a framework for creating custom Qt UI:s for LADSPA > plugins. This means you can create a gui in Qt-designer, f.ex. name it > 1050.ui (1050 == Freeverb), and put it in MusE's shared plugin > directory, which is checked on startup. If there's no 1050.ui-file there > when you launch the Freeverb plugin, it goes for a standard gui, > otherwise the custom one is initialized. > > You simply give all input widgets in the gui, that manipulate a LADSPA > parameter, a name starting with "P", and set the id-property of the > widget to the parameter index of the plugin. The connection is done > automagically and there's no need to recompile the app. In fact, you > don't even need to write any code yourself to create a custom LADSPA > gui. > This is a great idea, where it should be easy to make a general library for other hosts (not necesarrily running Qt) making use of those UI's with the help of some ipc-tricks. The great question is: Does there exist many ladspa-ui files? In case there are, the motivation to make such a library is quite high. Mathias, I have CC this to the dev-list. If you answer, please only use the dev-list. --

21 years, 1 month

[linux-audio-dev] Horgan System Freeze

by mark＠kfm.co.za

Hi all Is any one else having a complete system freeze running Horgand? My setup p4 - 256 ram - slackware 10 - kernel 2.6.9. - gcc 3.4.2. There were no compile errors and the app starts up from within terminal session once it hits the screen my system is completely dead - no mouse movement, etc - have to reboot. Regards Regards Mark Mark McBride 0844146809 ____________________________________________________________________________ The information in this e-mail is confidential and is intended solely for the addressee. Access to this e-mail by anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted in reliance on this, is prohibited and may be unlawful. Whilst all reasonable steps are taken to ensure the accuracy and integrity of information and data, and to preserve the confidentiality thereof, no liability or responsibility whatsoever is accepted if information or data is corrupted or does not reach its intended destination. KFM Radio (Pty) Ltd. will not accept responsibility for unauthorised use, be it public or private, to express opinion, promote or demote individuals or groups.

21 years, 1 month

[linux-audio-dev] new song on-line

by Dave Phillips

Greetings: I've placed on-line a song I wrote and recorded with the help of Ardour, TiMidity, DOSemu & Seq+, a bunch of LADSPA plugins, a guitar, a harmonica, and my dulcet-toned vocal. It's here if you'd like to check it out: http://linux-sound.org/ardour-songs.html I'll be adding more pieces to the page Real Soon Now, but at least it's a beginning... :) Best, dp

21 years, 1 month

[linux-audio-dev] Marian UCON CX soundcard

by Marije Baalman

Hi, does anyone know whether there are ALSA drivers available for the Marian UCON CX soundcard? (for details on the card: see www.marian.de) the card is quite new, but looks very promising, especially considering its price. some Marian salesman told me in May at the AES convention that someone was working on creating linux drivers. But as I am getting closer to actually being able to buy the card, I would like to know whether it works already under linux or not. sincerely, Marije --

21 years, 1 month

[linux-audio-dev] Low-latency audio over IP

by asbjs＠stud.ntnu.no

I am working on what is called "distributed multimedia interaction", one purpose of which is to investigate possibilities for ensemble playing by remote parties, distributing the audio over IP networks. A crucial point is to achieve audio transmission with very low latency. If anyone could provide me with information on, or pointers to, open-source software for doing this, I would be grateful. (I have started to roll my own, but I can hardly defend duplicating work unnecessarily.) Other comments are of course also appreciated. With kind regards Asbjørn Sæbø -- Asbjørn Sæbø, post.doc. Centre for Quantifiable Quality of Service in Communication Systems Norwegian University of Science and Technology <URL: http://www.q2s.ntnu.no/ >

21 years, 1 month

[linux-audio-dev] Re: Low-latency audio over IP

by lazzaro

On Nov 12, 2004, at 9:05 AM, Asbjørn Sæbø wrote: > I am working on what is called "distributed multimedia interaction", > one > purpose of which is to investigate possibilities for ensemble playing > by remote parties, distributing the audio over IP networks. Listen to recordings, and see links off of the "Research Projects" section, of: http://ccrma.stanford.edu/~cc/ Also see: http://www.cim.mcgill.ca/~jer/research/rtnm/history.html Also see: http://www.cs.berkeley.edu/~lazzaro/nmp/index.html And if MIDI is a part of your system, I encourage you to look at RTP MIDI: http://www.cs.berkeley.edu/~lazzaro/sa/pubs/txt/current-rtp-midi.txt http://www.cs.berkeley.edu/~lazzaro/sa/pubs/txt/current-guide.txt and its implementation in sfront: http://www.cs.berkeley.edu/~lazzaro/sa/sfman/user/install/ index.html#download --- John Lazzaro http://www.cs.berkeley.edu/~lazzaro lazzaro [at] cs [dot] berkeley [dot] edu ---

21 years, 1 month

AW: [linux-audio-dev] Low-latency audio over IP

by lists＠nescivi.de

Hi, --- Ursprüngliche Nachricht --- > > I would be very interested in any open source development in this > > direction! > > May I ask what your interests are? Are you working at related things? > I am interested to use this for Wave Field Synthesis. In the case of larger systems for that, it is necessary to distribute the audio over a network, to process it at different computers to supply sets of speakers with the right signals. For this a low-latency network is necessary, and sample-synchronisity. See my website at: http://gigant.kgw.tu-berlin.de/~baalman/ for info on the project I am working on. sincerely, Marije

21 years, 1 month

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Linux-audio-dev