Pd-list June 2007

pd-list@lists.iem.at

146 participants
264 discussions

puredata evolution
by Mathieu Bouchard 03 Jun '07

03 Jun '07

Niklas wrote: > Mathieu wrote: >> Because it's cheaper to implement. If well done, it's also an >> intermediate step towards automatic threading. It's important to cut >> hard goals into easier goals, because it reduces required investment >> and gives quicker returns. > yes, I totally agree but I was curious about the technical aspects and > not necessarily about the development process that naturally has to > obey these rules. I don't really see the technical aspects and the development process as being that much separated. It's at the same time the fact that development processes are full of techniques, so i don't know why it should't be considered technical; and also that technical aspects that are designed without taking development processes into account, can easily become unrealistic. >> Also, I wouldn't trust automatic threading to make use of the CPUs in >> the best possible way all of the time, *especially* for real-time. > well, afair an algorithm for the optimal solution would be in NP anyway. > if a suboptimal solution is enough, i think you can use it in a realtime > system very well; ableton live for example scales with multiple > cores/cpus. I have no idea how Ableton does it. I have never used Ableton and barely know anything about it. I am not certain about how to control multiple CPU usage in a way that prevents all the kinds of dropouts that could arise from it. It has to do with whether you can predict the timing of an object according to an history of its previous timing. If objects can switch CPUs efficiently anytime, maybe this issue is moot, but I don't assume that this is necessarily feasible with my current level of knowledge. _ _ __ ___ _____ ________ _____________ _____________________ ... | Mathieu Bouchard - tél:+1.514.383.3801, Montréal QC Canada

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libgl1-mesa-glx VS. libgl1-mesa-swx11 on Gem/PD Ubuntu 7.04
by mark edward grimm 02 Jun '07

02 Jun '07

Hi all, I just did a Ubuntu-server 7.04 install on an old G3/ppc. Everything went well and after installing xorg/pd/gem, pd would crash on gemwin 'create'. After a few hours of tinkering I replaced libgl1-mesa-glx with libgl1-mesa-swx11: $ apt-get remove libgl1-mesa-glx libgl1-mesa-swx11+ ...and everything worked! I then reinstalled the entire system to make sure my replacement hunch was correct (because i did a lot of other hacking that might have confilicted, etc) It all worked after a new install + xorg and glx replacement with swx11. I was just wondering if anyone knows of this - specifically libgl1-mesa-swx11 and why glx fails to work in creating a gemwin. I did some searching and found little info on swx11.... One thing that i noticed is that apt-get wants to remove 'xorg' and all dependencies. It removes xorg but keeps everthing else (xserver-xorg etc). Things seem to work fine but i still get a 'run apt-get autoremove' warning to remove all 100 or so xorg dependencies everytime i use apt-get.... ...any info would be super! I'm documenting my progress for use in a tutorial for noobs on 'bringing low-end systems back to life for artists' which might eventually become a more formalized workshop/class. Any help is apprieciated! best mark ____________________ mark edward grimm | m.f.a | ed.m megrimm.net | socialmediagroup.org & .com meg156(a)columbia.edu | 585.509.8703 ______________________________

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network
by Max Neupert 01 Jun '07

01 Jun '07

hi list, i'm sending control data to a vline~ object over the network. those are precisely timed messages. i can hear uncontinuous errors in the output, some messages seem to be delayed. when i use OSC the timing is pretty bad. now i use netserver/ netclient and it's getting better, but there are still some discontinuity hearable (in the sampleplaying of the tabread4~ driven by the vline~). i guess i can further optimize by avoiding all other network traffic, but is there another way to get the sheduling tighter? thanks, m.

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iARS download?
by Andrei Thomaz 01 Jun '07

01 Jun '07

hello list, I looked at this page, and it looks amazing: http://iem.at/projekte/newmedia/vch_iaem/index_html/view But i couldn't find a link for downloading the iARS plugin. It seems link if I need to have an user account in the site, something I guess only the IEM students have. Am I right? []'s andrei

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Symbol not found: dyld_stub_binding_helper
by xname 01 Jun '07

01 Jun '07

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello, thanks to the people who replayed my earlier question: i managed to compile the object, but once i create it, pd crashes :| so, i guess i do not have enough experience, but i get this error in the log file: Symbol not found: dyld_stub_binding_helper described here: http://developer.apple.com/documentation/DeveloperTools/Reference/MachORefe… well, all that story did not give me the light. anyone has a clue? saluti e omaggi, xname -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQFGYCTPNvasaG3ULUwRArjyAJ0XybplsIS4mi6QpjTkZI/kVjuXfACgsFlF O++2vAILb5ZD6xnLBq4WpcI= =vbHo -----END PGP SIGNATURE-----

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pix_record frames per second and again cpu-performance
by moritz 01 Jun '07

01 Jun '07

hello list two questions about pix_record: i render out some movieclips with pix_record. the Gem-render is 15 frames per second, but when i play it with mplayer it says it plays 20 frames per second. I have to force mplayer to play it 15 frames per second. can i give pix_record an argument that it should only record 15 fps? or is it just an mplayer affair? second question: i want to record different geos, so i have to pix_snap every frame and then go into pix_record. i think pix_snap is very cpu intensive, sometimes pd crashes. Is there another solution to record the Gemwindow that do not cost that much cpu power? thanx moritz

3 3

midi on OSX
by Oded Ben-Tal 01 Jun '07

01 Jun '07

I need help with I-Cube controllers under OSX. I am not a regular MAC user so I somehow messed things a bit. I was able to install the I-Cube and using the editor to set the controllers to pass midi messages into pd. It all worked fine till yesterday. Coming into my office today I found out that I lost PD on my MAC - When I first installed it I didn't know I was supposed to copy the pd-extended thing to my application folder so I guess it was installed but floating somewhere. I must have removed the installed version yesterday by accident (probably when I was trying to sort out the loading of additional libraries). So I installed PD again and this time copied the app and the library loader to their correct places. The result is that PD doesn't get midi messages from the controller anymore. (In addition it seems the old mac can't handle all these extra libraries - it stopped responding a few times so I removed the full loader file. But that didn't solve the midi problem). I am using a G4 Mac OS X 10.4.9 Any suggestions how to locate the problem and fix it? Thanks Oded

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iemlib iemgui room_sim
by Anton Schlesiner 01 Jun '07

01 Jun '07

Hi, I've a problem with the extension of sound sources in the iem room simulation model. To trace the error I came to the iem room_sim patch, which is apparently consistent with my command line error: Scr_gain: no such object Room_sim_3d: no such method for 'room_sim_3d' Using the help room_sim_2d room_sim _3d-patches, it is also not possible to add a third source (to me). Are these objects restricted to two sources (which would be contradictory to the iem reports e.g. 38/7)? Anybody any experiences with it? Thank you. Anton

2 1

iemlib iemgui room_sim
by Anton Schlesiner 01 Jun '07

01 Jun '07

Hi, The iem room simulation model is a nice implementation, i would like to use it for measurements with SNR enhancing algorithms in hearing aid desing. So far everything works fine, apart from the extension of sound sources. To trace my error I came to the iem room_sim patch, which is apparently consistent with my comandline error: Scr_gain: no such object Room_sim_3d: no such method for 'room_sim_3d' Using the help room_sim_2d room_sim _3d-patches, it is also not possible to me to add a third source. Anybody any experiences with it? Thank you. Anton

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what distinguishes a numeric symbol as an argument?
by Mathieu Bouchard 01 Jun '07

01 Jun '07

Frank Barknecht wrote: > Acutally except for numeric symbols and for the "whitespace symbols" > [keyname] sometime generates one doesn't meet "strange symbols" a lot in > real life, so it's not a real issue in practice. One doesn't meet those strange symbols in real life, and it's because those symbols are a real issue in practice, so, people avoid them carefully. The reason you call those symbols strange, is because of the way that pd handles them; it's not because of their own characteristics. _ _ __ ___ _____ ________ _____________ _____________________ ... | Mathieu Bouchard - tél:+1.514.383.3801, Montréal QC Canada

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Pd-list June 2007