Linux-audio-dev May 2011

linux-audio-dev@lists.linuxaudio.org

49 participants
44 discussions

[OT] DAH PhD Programme, scholarships available

by Victor Lazzarini

Dear all, we have started a new postgraduate programme, the Digital Arts and Humanities PhD, which offers a computer music strand. The programme has a number of scholarships available and applications are open now. http://www.forasfeasa.ie/ http://learndigitalhumanities.ie/courses/postgrad/digital-arts-and-humaniti… Regards Dr Victor Lazzarini Senior Lecturer Dept. of Music NUI Maynooth Ireland tel.: +353 1 708 3545 Victor dot Lazzarini AT nuim dot ie

12 years, 11 months

ANN: Upcoming L2Ork tour of Europe

by Ivica Ico Bukvic

Apologies for cross-posting. After 8 months of planning, fund-raising a metric ton of greenbacks, and literally thousands of hours of hard work distributed across dozens of souls, Linux Laptop Orchestra (L2Ork) is truly excited to announce our maiden tour of Europe May 12 June 1, 2011. Joining forces with our guest soloist Ron Coulter and our talented soprano l2orkist Aurora Martin, the ensemble will be touring 8 countries, performing and holding workshops in following locations: May 14 Linz, Austria (as part of LiWoLi festival) May 15 Ljubljana, Slovenia May 16 Budapest, Hungary May 19 Croatia May 21 - Hamburg, Germany (Academy of Music and Theater) May 24 - Amsterdam, Netherlands (STEIM) May 25 Amsterdam, Netherlands (Zaal 100) May 26 Utrecht, Netherlands (HKU) May 30 Paris, France (IRCAM) June 01 Oslo, Norway (NIME 2011) Hope to see you at one of our upcoming destinations! In the meantime, to stay up-to-date with the latest developments join our facebook page (http://www.facebook.com/group.php?gid=117918141555131) For additional info on L2Ork please visit http://l2ork.music.vt.edu On a somewhat related note, L2Ork has also made another series of updates to the Linux-centric pd-l2ork variation of Pd which is also available on the L2Ork site together with a series of externals and abstractions. For additional info on pd-l2ork please visit http://l2ork.music.vt.edu/main/?page_id=56 Should you happen to have any questions, suggestions or concerns, please do not hesitate to contact me. Best wishes, Ivica Ico Bukvic, D.M.A. Composition, Music Technology Director, DISIS Interactive Sound & Intermedia Studio Director, L2Ork Linux Laptop Orchestra Assistant Co-Director, CCTAD CHCI, CS, and Art (by courtesy) Virginia Tech Dept. of Music - 0240 Blacksburg, VA 24061 (540) 231-6139 (540) 231-5034 (fax) ico(a)vt.edu http://www.music.vt.edu/faculty/bukvic/

12 years, 11 months

LAC 2011: Sunday night

by Egor Sanin

Hi LACers, Is anyone driving in the direction of Dublin or, better yet, the airport late Sunday night after the conference? I've got a flight early monday morning and if you're headed in that direction, I would be very happy to contribute some cash for a lift. Thanks.

12 years, 11 months

Linux Audio Conference 2011 starts today with live video stream coverage

by Jörn Nettingsmeier

hi everyone! just a quick reminder that lac 2011 is starting today at 10:00 utc+1, hosted by NUI maynooth in ireland. find the program at http://lac.linuxaudio.org/2011. live streams will be available from streamer.stackingdwarves.net in ogg theora format. remote participants are invited to join us on irc for conference-related chitchat and real-time feedback. at the end of each session, you will get the chance to ask questions to the presenter, which will be relayed to the crowd in maynooth by a local chat operator. best, jörn

12 years, 11 months

[LAC] [LAC] Kilcar B&B

by Egor Sanin

Hello LACers! I've got myself into a mixup. I've booked a hostel in Dublin for the Conference, but now I want to get out to Maynooth. I've been in touch with Kilcar B&B and Annette has me covered for Friday night, however, after that she's full. I remember someone here was asking about teaming up for a place, so perhaps there's a chance someone over there is willing to split a room and costs. If you don't mind a roommate, please email or call me. I'm in Dublin right now at Avalon house. I've got a mobile here: 085 7836111. I will be walking around a lot today, so phone is better. Thanks gang, I'm looking forward to meeting everyone!

12 years, 11 months

Re: [LAD] Linux-audio-dev Digest, Vol 51, Issue 5

by Stéphane Letz

> > > Message: 14 > Date: Wed, 4 May 2011 15:10:55 +0000 > From: Fons Adriaensen <fons(a)linuxaudio.org> > Subject: Re: [LAD] Looping audio to oneself via Jack > To: linux-audio-dev(a)lists.linuxaudio.org > Message-ID: <20110504151055.GE10034(a)linuxaudio.org> > Content-Type: text/plain; charset=us-ascii > > On Wed, May 04, 2011 at 04:04:37PM +0100, Rui Nuno Capela wrote: > >> 2. client3 loopbacks to itself and then it all applies as "the bug". >> question is: is it jack's bug? maybe not. the other half/part of the >> problem still aplies, as it depends on the client3's process code >> flow--which buffer port is read/written first? ins or outs? and in what >> order? hmm... > > If one signal (the looped back one) cas disappears because you > disconnect _another_ one, I'd call that a bug. 100%. > > Note that fixing this does not imply you can't get your own > undelayed output anymore. That just depends on the order of > your computations and jack_port_get_buffer() calls. > > Ciao, > > -- > FA > I suggest three things : - move this discussion on jack-dev list... - write a test client to show the problem. - test it with jack1 and jack2 to see what happens. Stéphane

12 years, 11 months

Re: [LAD] [LAU] FW: Frequency Space Editors in Linux

by Kjetil S. Matheussen

Jeremy Salwen: > > I just recently discovered ceres3: > http://www.music.columbia.edu/~stanko/About_Ceres3.html > > have you heard of it? > Ceres is larger and more updated than Ceres3. http://archive.notam02.no/arkiv/src/ceres-0.57.tar.gz (Ceres3 has a few more options for some of the transforms, but lacks lots of other stuff.)

12 years, 11 months

[LAA] Release of aj-snapshot-0.9.3

by Lieven Moors

Hi everyone, This is a small update to aj-snapshot. Aj-snapshot is a small command-line utility that can be used to store/restore ALSA and JACK connections to/from an XML file. This release fixes a small and a big bug: - Correction to the license headers which referred to the wrong program... (copy/paste error) - Make the -i flag ignore clients in both directions. (in the previous release, only connections FROM the ignored clients were ignored) The website: http://aj-snapshot.sourceforge.net/ Git repository: git clone git://aj-snapshot.git.sourceforge.net/gitroot/aj-snapshot/aj-snapshot Please report bugs on the sourceforge project page (don't be shy ;-) You will find direct links for bug reports or feature requests on the main website. greetings, lievenmoors

12 years, 11 months

Strange gettimeofday behaviour - out of order times.

by Tim E. Real

I discovered gettimeofday occasionally gives me a time value which is less than a previous time value. The value is actually 'out of order' and really belongs ahead of a few others, according to examined printouts. So I tried clock_gettime(CLOCK_MONOTONIC, ..), same result. Then I tried clock_gettime(CLOCK_PROCESS_CPUTIME_ID, ..) and it appears to be OK so far, giving me what I want - truly linear time. Still checking some things, maybe there's a reason, the app's fault. From what I've read gettimeofday is thread safe, but the incorrect time values are being read by the same thread always. Any advice here, anyone seen this? Also, when using Jack, is it advisable to choose the same clock method as Jack is using (cycle, hpet, system)? Thanks. Tim.

12 years, 11 months

Looping audio to oneself via Jack

by Fred Gleason

Howdy Folks: Here's a seemingly trivial requirement that has me stymied: I have a Jack client (external, built against 0.102.20) where it occasionally makes sense to connect an output port to an input on the same client. QJackCtl happily makes the connection; the process callback delivers data as expected, but it's all zeros for the connected input port! I can route the same client output port to a physical output (ALSA backend) and hear the expected audio. Likewise, a physical capture port connected to the input on the client receives data from the card as expected. It's only the "loopback" within the same client that doesn't want to go. At first I suspected that the JackPortIsTerminal flag might have some bearing on this, but changing this value seems to have no effect. Am I missing something blatantly obvious here, or is this something that is just not within the scope of Jack to allow? Any pointers greatly appreciated. Cheers! |-------------------------------------------------------------------------| | Frederick F. Gleason, Jr. | Chief Developer | | | Paravel Systems | |-------------------------------------------------------------------------| | ...one of the main causes of the fall of the Roman Empire was that, | | lacking zero, they had no way to indicate successful termination of | | their C programs. | | -- Robert Firth | |-------------------------------------------------------------------------|

12 years, 11 months

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Linux-audio-dev May 2011