Linux-audio-user August 2012

linux-audio-user@lists.linuxaudio.org

98 participants
87 discussions

Re: [LAU] Output all audio on other computer's device?

by James Harkins

> People have managed it in the past with varying degrees of success. The > standard method these days is to use pulseaudio's jack-sink over dbus. FWIW, I had epic fails with dbus in Ubuntu 12.04. > > I don't know why people still insist on making their lives more difficult > that necessary. Pulse works just fine as a jack client. > because pulse is a dog, and its latency blows? Different configurations are right for different use cases. I run pulse through jack for daily use, but I wouldn't do that in a concert. For instance, I might want to have Skype open in a normal session, and that seems to play best with pulseaudio. But I wouldn't use it in a performance, in which case it's simple to start the jack server but not pulse. hjh

12 years, 11 months

Re: [LAU] g t k client to control the jack audio server?

by Chris Caudle

> From: "S. Massy" <lists(a)wolfdream.ca> > Unfortunately not. This particular poster is blind and uses the Orca > screen-reader to access his computer and the GUI. Orca mostly works with > GTK-based applications OK, thank you for clarifying. So, what is desired is not a GTK application per se, but an application which works correctly with the Orca screen reader software. The Orca wiki (which has a disclaimer of being out of date) has this to say: Orca works with applications and toolkits that support the assistive technology service provider interface (AT-SPI).... Applications and toolkits supporting the AT-SPI include the GNOME GTK+ toolkit, the Java platform's Swing toolkit, SWT, OpenOffice/LibreOffice, Mozilla, and WebKitGtk. According to the AT-SPI entry in wikipedia, support for AT-SPI is included in: GTK+ 2, Java/Swing, the Mozilla suite, StarOffice/OpenOffice.org and Qt 4. So it appears that the possible solutions to the problem would be a GTK application for starting and controlling jack (as originally requested), a Java/Swing application to do the same, or help Rui make any changed needed in qjackctl so that the AT-SPI support in Qt4 is utilized. Possibly a variation on a GTK application would be something like PyGTK which uses the GTK framework but from a language tailored to fast development. -- Chris Caudle

12 years, 11 months

question about rosegarden

by Gabriel

Hi everyone, i just wanted to ask if theres a way to tune rosegarden to A3 442Hz in the pitch tracker. Thanks in advance!

12 years, 11 months

how to set up my ederol u a 25 to work with jack?

by trahern culver

hey all how do i set up my u a 25 to work with jack and to be the default every time jack starts some one did post commands on how to do this but I've forgotten them sorry your help with this question would be most welcome kind regards trahern.

12 years, 11 months

Hydrogen Drumkit Contest : and the winners are ...

by Thijs van severen

- sorry for crossposting - Hi all The winners of the Hydrogen Drumkit Contest have just been announced on the Hydrogen site ! Check out the announcement <http://www.hydrogen-music.org/hcms/node/2327>and listen to the demo songs of the submitted drumkits. A big thank you to all the people that submitted a drumkit and to the jury ! Enjoy :-) The Hydrogen team

12 years, 11 months

Re: [LAU] g t k client to control the jack audio server?

by Chris Caudle

> hey all i'm looking for a g t k client to control the jacck audio server I think the original confusion was in your terminology. Most people would consider a "client" to be an application which uses jack to transport audio. qjackctl starts and configures jack, but it doesn't really come to mind when you ask about jack clients. > some thing that does the same job as qjackctl but that is > written in g t k Choosing your tools based on which GUI tool kit was used for creating the application seems like kind of an ass backwards way to do something. What is your real goal? Do you want to avoid having to install Qt shared libraries because you are really low on disk space? Do you have some sort of ideological grudge against Qt for some reason? Do you just not like the way qjackctl looks? It seems to me that ideological grudge is the only reason which really absolutely requires the solution of an app written using the GTK tool kit. The other problems have possible alternate solutions. -- Chris Caudle

12 years, 11 months

Looking to record video from a webcam and audio from jack, tied to jack transport.

by Nathanael Anderson

I'm looking for a simple client that can record HD webcam video, while recording audio from jack, and using the transport. I'd ideally like to have multiple instances of it running on different web cam's at the same time. I've looked at using pygst, but there is noticeable latency when trying to sync jack's transport with gstreamer's transport. I also have trouble trying to use pygst to receive jack transport rolling/stop events in real time. At this point it's still the best solution i've found though. Anyone have anything better I can look into? The intended way I'll use it is: 1. run jack 2. run blender using jack audio/transport, use the NLE video editor 3. load a video file in blender (jack transport will keep the video sync'd with othe jack aware programs) 4. start x instances of said program, each with their own HD webcam, jack port, and jack transport access 5. when jack starts rolling, start recording audio/video into a video file I don't care about editing with the recording program, I can do that with other programs. I want a simple workflow without having to sync audio/video, or transfer files around. Nathanael

12 years, 11 months

Fwd: Call for Participation: live.code.festival @ IMWI Karlsruhe

by Holger

*** Apologies for Multiple Posting *** Call for participants for the international live coding festival to be held at the University of Music Karlsruhe, Germany. ================================================================= Dates: 19. - 21. April 2013 Venue: University of Music Karlsruhe, Germany Deadline for submission: 15th November 2012 Website: http://imwi.hfm.eu/livecode/ ================================================================= The live.code.festival will take place at the Institute for Musicology and Music Informatics (IMWI), University of Music Karlsruhe from 19th to 21th of April in 2013, organized by the IMWI, the local live coding band Benoît and the Mandelbrots and members of the live coding organization TOPLAP. It will be a weekend dedicated to this emerging discipline of computer music, to exchange ideas, demonstrate systems, enjoy concerts and establish connections between people and institutions interested in research and performance of live coding. Although the main focus of the festival is live coding of audio the festival will promote live coding in other disciplines as well. The festival will include live coding concerts and performances, talks, demonstrations, discussion panels, opportunities for collective improvisations and get-togethers. More information about deadlines, submissions and topics at http://imwi.hfm.eu/livecode

12 years, 11 months

g t k client to control the jack audio server?

by trahern culver

hey all i'm looking for a g t k client to control the jacck audio server some thing that does the same job as qjackctl but that is written in g t k does any one know of a client matching the above requirements question Your help with this question would be most welcome. kind regards trahern.

12 years, 11 months

g t k jack audio clients?

by trahern culver

hey all are there any jack audio g t k clients? and are they any good? your help with these questions would be most welcome kind regards trahern.

12 years, 11 months

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Linux-audio-user August 2012