Pd-list October 2004

pd-list@lists.iem.at

142 participants
303 discussions

RE: [PD] Ways to decrease processing delay?
by Ryan Supak 07 Oct '04

07 Oct '04

FWIW, Last night I did some tinkering, and I found the source of the sluggishness in MIDI throughput: Even though I was using the -noaudio flag, apparently the number set for audio latency still applies. So, I simply made the audio latency 1 millisecond and MIDI now works properly (it was 70 ms to begin with, definitely a noticeable delay if youre trying to play keys...) Thanks again, rs

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Re: [PD] Gem initial trial run errors.
by thewade 07 Oct '04

07 Oct '04

Once I fixed FTGL and avifile-0.7 to be usr/local instead of usr/ in configure things built a little farther. Here is another problem though... g++ -o Gem.pd_linux -shared ../Manips/*.o ../Particles/*.o ../Base/*.o ../MarkEx/*.o ../Pixes/*.o ../Controls/*.o ../Nongeos/*.o ../Geos/*.o ../openGL/*.o -laviplay -lftgl -ldv -lmpeg3 -lquicktime -laviplay -lpng -ljpeg -ltiff -lGLU -lGL -lXext -lXxf86vm -lXext -lX11 -ldl -lz -lm -L/usr/X11R6/lib64 -lfreetype -lz /usr/bin/ld: /usr/local/lib/libftgl.a(FTFont.o): relocation R_X86_64_32S can not be used when making a shared object; recompile with -fPIC -fPIC IS used for all of the subdirs though, or so the screen reports. g++ -c -fPIC -g -O2 -I/usr/X11R6/include -I/usr/include/freetype2 -I.. -I/usr/local/include/FTGL -I/usr/local/include/avifile-0.7 part_draw.cpp -o part_draw.o for example... Whats wrong? Its just this last step! So close! Thanks for the help! -thewade

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Re: [PD] -rt flag and shell scripts
by rat＠telecoma.net 07 Oct '04

07 Oct '04

> if shell does not spawn subprocesses (and i am quite sure it doesn't) > there is no wonder that your audio has dropouts. i recommend using two > instances of pd in that case - one for audio and one for the > shell-stuff. you could run one of them with lower priority (using > renice and/or -rt). super idea ! i ll give that a try merci e

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Playing MIDI files.
by Olivier Lartillot-Nakamura 07 Oct '04

07 Oct '04

Dear all, I would need to create a pd patch that, when a bang is received, launches the playing of a MIDI file. Have you an idea how I can do that ? Are there pd objects that play MIDI files ? Thanks a lot for your valuable help, Regards, Olivier Lartillot-Nakamura Music Cognition Group University of Jyväskylä, Department of Music PL 35(A), 40014 University of Jyväskylä, Finland

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[iemlib] filter click
by julien.breval＠tremplin-utc.net 07 Oct '04

07 Oct '04

hello Still trying to make a block-shaped filter from a HP filter and a LP filter, with the possibility of changing the cutoff frequencies as fast as possible, I experimented some patches with Iemlib's Chebychev and Butterworth filters, and also [lp1~]. The sound is very good (especially, the 10th order filters have a very fitting slope), but I get a sound "artefact" when I change the cutoff, unless the time interpolation is superior to 30 ms -- which is already too much for my patch (I want to use this filter inside a kind of realtime granular editing software). Is there a solution to avoid this ? For the moment, the original [vcf~] is the only one I found that can have its cutoff changed very fast. But besides this "triangle" shape I would like to add a "rectangle" filter to my patch. -j

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Re: [PD] Gem initial trial run errors.
by thewade 07 Oct '04

07 Oct '04

> There is a new version in unstable. Please test and report back. > I also made some improvements to the build system showing the > features actually compiled in after the configure step, and I have > hopefully fixed the dv input stuff. Thanks Guenter for the work on the patch. Indeed things seem to be detected fine by configure, but make has some problems: g++ -c -fPIC -g -O2 -I/usr/X11R6/include -I/usr/include/freetype2 -I.. -I/usr/include/FTGL -I/usr/include/avifile-0.7 TextBase.cpp -o TextBase.o In file included from TextBase.cpp:17: TextBase.h:23:20: FTFont.h: No such file or directory My FTGL directory is in /usr/local/include not /usr/include. Is it possible that configure is overwriting detected settings with some sort of default (line 5565 of configure)? Thanks! -thewade

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RE: [PD] Ways to decrease processing delay?
by Ryan Supak 06 Oct '04

06 Oct '04

Just to recap, though, the main speed increase will come by not using -noaudio and by tinkering with -sleepgrain? Thanks, rs

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RE: [PD] Ways to decrease processing delay?
by Ryan Supak 06 Oct '04

06 Oct '04

at any rate, i ultimately reduced my [expr] to two relational operators ([<], [>]) and one [* -1]. i'd be open to any more suggestions as well... rs

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RE: [PD] Ways to decrease processing delay?
by Ryan Supak 06 Oct '04

06 Oct '04

Hi Iohannes: I was afraid [expr] might be expensive -- will change to [moses], and I will disable -noaudio, and look into -sleepgrain as a last resort... Thanks, rs

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pool giving segfault with "mksub"' and other commands
by David NG McCallum 06 Oct '04

06 Oct '04

Thomas / all, I've got the latest CVS version of [pool] and it segfaults on me every time when I try "mksub" and "mkchsub", and frequently when I try to "save" or "savex", but I haven't been able to figure out when exactly that happens. It may do this for other commands too, but I haven't checked them all out. I'd be happy to give you debug info if you tell me what you'd like. At the moment Pd just exits with: pd_gui: pd process exited Segmentation fault David -- __ _ _ _ _ __ ___ _ ___ __ _ _ _ ____ __ Music wants to be free http://sintheta.org

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Pd-list October 2004