Pd-list July 2008

pd-list@lists.iem.at

111 participants
206 discussions

Gem on linux
by brandt＠subnet.at 15 Jul '08

15 Jul '08

Hello Can anybody give me a hint why GEM does stop my machine during playing an .avi? the same file is played with pidip without any problems. Debian 2.6.16 nvidia gforce 5200 athlon 2100 thank you in advance markus

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Re: [PD] how to avoid (most/many/some) readsf~ dropouts
by Dr. Greg Wilder 15 Jul '08

15 Jul '08

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Re: [PD] how to avoid (most/many/some) readsf~ dropouts
by Dr. Greg Wilder 15 Jul '08

15 Jul '08

Damian Stewart wrote: > Dr. Greg Wilder wrote: > >> I've attached the latest version of my "basic" playback (w/fade) patch >> for suggestions/comments... Unfortunately, your ascii patch didn't >> line up, would you mind posting an example patch that shows your method? > > first thing i notice when i open it up is this: > > on the left hand side, you've got a 'random 50' and a '+ 6', going into > the delay. this means the minimum delay will be 6ms, which i doubt is > long enough. > > why the random? why not just hardcode 50ms in there? or at least go > 'random 30' and '+ 40' or something. > > hth, > d > Here's a cleaner version of the example patch -- without the random delay and a larger readsf~ buffer. Still no joy -- even with 92.9 ms latency. I'm beginning to think my system simply isn't fast enough to play more than 10 (or so) channels of 24bit/88.2kHz sound at a time... G -- http://www.orpheusmediaresearch.com/ http://www.gregwilder.com/ +1 215-764-6057 (office) +1 215-205-2893 (cell) #N canvas 311 207 902 479 10; #X msg 86 174 1; #X msg 129 174 0; #X obj 129 154 r stop; #X obj 175 349 *~; #X obj 383 123 loadbang; #X obj 441 123 r reset_vol; #X text 401 103 master volume; #X obj 243 349 *~; #X obj 174 371 throw~ ch1; #X obj 242 371 throw~ ch2; #X obj 312 349 *~; #X obj 380 349 *~; #X obj 311 371 throw~ ch3; #X obj 379 371 throw~ ch4; #X obj 574 121 delay 500; #X msg 383 144 100; #X msg 441 144 100; #X obj 667 217 \$1; #X obj 395 327 vline~; #X obj 328 327 vline~; #X obj 258 327 vline~; #X obj 191 327 vline~; #X obj 448 349 *~; #X obj 516 349 *~; #X obj 584 349 *~; #X obj 574 200 dbtorms; #X floatatom 574 161 5 0 0 0 - - -; #X obj 574 179 * 1; #X obj 652 349 *~; #X obj 667 327 vline~; #X obj 600 327 vline~; #X obj 531 327 vline~; #X obj 464 327 vline~; #X text 599 180 (vol%); #X obj 447 371 throw~ ch5; #X obj 515 371 throw~ ch6; #X obj 583 371 throw~ ch7; #X obj 651 371 throw~ ch8; #X msg 175 127 open 8ch_acheron_blasts.wav; #X msg 574 141 0; #X msg 667 238 \$1 3500; #X obj 667 259 unpack f f; #X obj 724 280 + 1025; #X text 719 238 fade time in ms; #X floatatom 724 301 5 0 0 0 - - -; #X obj 441 165 delay; #X obj 441 185 bng 15 250 50 0 empty empty empty 0 -6 0 10 -262144 -1 -1; #X obj 148 55 r acheron_play; #X obj 574 100 r acheron_fade; #X obj 148 76 t b a; #X obj 175 191 readsf~ 8 1e+12; #X obj 148 97 del 1500; #X connect 0 0 50 0; #X connect 1 0 50 0; #X connect 2 0 1 0; #X connect 3 0 8 0; #X connect 4 0 15 0; #X connect 5 0 16 0; #X connect 7 0 9 0; #X connect 10 0 12 0; #X connect 11 0 13 0; #X connect 14 0 39 0; #X connect 15 0 26 0; #X connect 16 0 26 0; #X connect 17 0 40 0; #X connect 18 0 11 1; #X connect 19 0 10 1; #X connect 20 0 7 1; #X connect 21 0 3 1; #X connect 22 0 34 0; #X connect 23 0 35 0; #X connect 24 0 36 0; #X connect 25 0 17 0; #X connect 26 0 27 0; #X connect 27 0 25 0; #X connect 28 0 37 0; #X connect 29 0 28 1; #X connect 30 0 24 1; #X connect 31 0 23 1; #X connect 32 0 22 1; #X connect 38 0 50 0; #X connect 39 0 26 0; #X connect 40 0 18 0; #X connect 40 0 19 0; #X connect 40 0 20 0; #X connect 40 0 21 0; #X connect 40 0 32 0; #X connect 40 0 31 0; #X connect 40 0 30 0; #X connect 40 0 29 0; #X connect 40 0 41 0; #X connect 41 1 42 0; #X connect 42 0 44 0; #X connect 44 0 45 1; #X connect 45 0 16 0; #X connect 45 0 46 0; #X connect 46 0 1 0; #X connect 47 0 49 0; #X connect 48 0 14 0; #X connect 48 0 45 0; #X connect 49 0 51 0; #X connect 49 1 38 0; #X connect 50 0 3 0; #X connect 50 1 7 0; #X connect 50 2 10 0; #X connect 50 3 11 0; #X connect 50 4 22 0; #X connect 50 5 23 0; #X connect 50 6 24 0; #X connect 50 7 28 0; #X connect 51 0 0 0;

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unclamped pix_subtract?
by Spencer Russell 14 Jul '08

14 Jul '08

I'm trying to implement a background subtractor using pix_buffer to store the reference frame, and then subtracting it from the live video input, then using that subtraction as an alpha mask for the live video. The problem is that pix_subtract clamps the output at 0, but I need it to not clamp, and then I can take the absolute value. Is there a way to do unclamped subtraction of pix objects in GEM? thanks, spencer

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shell problem on osx
by marius schebella 14 Jul '08

14 Jul '08

Hi, when I use the shell object on osx, I get an error after every command I send to it. "The application pd quit unexpectedly". anybody know why and how to get rid of that? thanks a lot. marius.

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compiling pd on fedora 9
by Jaime Oliver 14 Jul '08

14 Jul '08

Hello I´m compiling pd on fedora 9 in a core 2 duo machine, doing the following yum install tk-devel then cd into src: ./configure make install and pd doesn´t work correctly, (for example ctrl-n and ctrl-q don´t work) below is the result of my ./configure: Could someone point me to the problem(s) and if possible to some solutions? thanks, Jaime checking for gcc... gcc checking for C compiler default output file name... a.out checking whether the C compiler works... yes checking whether we are cross compiling... no checking for suffix of executables... checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether gcc accepts -g... yes checking for gcc option to accept ANSI C... none needed checking for a BSD-compatible install... /usr/bin/install -c checking whether make sets $(MAKE)... yes checking how to run the C preprocessor... gcc -E checking for an ANSI C-conforming const... yes checking for egrep... grep -E checking for ANSI C header files... yes checking for sys/types.h... yes checking for sys/stat.h... yes checking for stdlib.h... yes checking for string.h... yes checking for memory.h... yes checking for strings.h... yes checking for inttypes.h... yes checking for stdint.h... yes checking for unistd.h... yes checking for pid_t... yes checking for size_t... yes checking whether time.h and sys/time.h may both be included... yes checking for ANSI C header files... (cached) yes checking fcntl.h usability... yes checking fcntl.h presence... yes checking for fcntl.h... yes checking limits.h usability... yes checking limits.h presence... yes checking for limits.h... yes checking malloc.h usability... yes checking malloc.h presence... yes checking for malloc.h... yes checking sys/ioctl.h usability... yes checking sys/ioctl.h presence... yes checking for sys/ioctl.h... yes checking sys/time.h usability... yes checking sys/time.h presence... yes checking for sys/time.h... yes checking for unistd.h... (cached) yes checking bstring.h usability... no checking bstring.h presence... no checking for bstring.h... no checking whether gcc needs -traditional... no checking return type of signal handlers... void checking for vprintf... yes checking for _doprnt... no checking for gettimeofday... yes checking for select... yes checking for socket... yes checking for strerror... yes checking for working alloca.h... yes checking for alloca... yes checking for dlopen in -ldl... yes checking for sin in -lffm... no checking for sin in -lm... yes checking for pthread_create in -lpthread... yes checking tcl.h usability... yes checking tcl.h presence... yes checking for tcl.h... yes checking for main in -ltcl85... no checking for main in -ltcl8.5... yes checking for main in -ltk85... no checking for main in -ltk8.5... yes .................... alsa= yes checking for snd_pcm_info in -lasound... yes checking for special C compiler options needed for large files... no checking for _FILE_OFFSET_BITS value needed for large files... no checking for _LARGE_FILES value needed for large files... no configure: creating ./config.status config.status: creating makefile -- Jaime E Oliver LR joliverl(a)ucsd.edu www.realidadvisual.org/jaimeoliver www-crca.ucsd.edu/ www.realidadvisual.org 9168 Regents Rd. Apt. G La Jolla, CA 92037 USA -- Jaime E Oliver LR joliverl(a)ucsd.edu www.realidadvisual.org/jaimeoliver www-crca.ucsd.edu/ www.realidadvisual.org 9168 Regents Rd. Apt. G La Jolla, CA 92037 USA

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Re: [PD] [OT] Ubuntu Studio and other media-related distros
by Matt Barber 13 Jul '08

13 Jul '08

> Date: Sun, 13 Jul 2008 12:01:05 +0200 > From: Derek Holzer <derek(a)umatic.nl> > Subject: [PD] [OT] Ubuntu Studio and other media-related distros > To: pd-list(a)iem.at > Message-ID: <4879D261.9030608(a)umatic.nl> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Hey gang, > > In a search for distraction from the project I'm really supposed to be > working on, I decided to update my (until now stable but very outdated) > Gentoo media editing machine. A couple days of circular package blocks, > missing dependencies and vanishing libraries later, I'm really curious > why I once decided it was a good idea to compile everything myself ;-) > (Note to Gentooers: "emerge --update --deep world" once a month, or get > the thing stable and never touch it again! If you wait too long, and > your current packages go out of Portage, it can be hellish!). > > So if and when this machine is hosed, what would be a good distro to put > on it? I don't feel much like the super-hacker I was a four or five > years ago when I got into Gentoo, but I like a distro that I can > configure to be extremely minimal and transparent. And what is > absolutely necessary is that it has well-configured versions of all the > audio softs that I depend on, such as Ardour (w/ VST support!), Jamin, > LADSPAs, JACK, etc. Realtime/prempt kernel = A-OK. Ability to use > PD-Extended is of course a plus, and also the ability to mount HFS+ > drives without destroying them (as Ubuntu has done to me in the past) is > also necessary. > > I looked at Ubuntu Studio, but I wanted to ask who actually uses it. > From the page it seems like maybe it's not well-maintained, and that's > another requirement for me after messing around with different > audio-related overlays for Portage that eventually get abandoned. > > If Ubuntu Studio isn't the right one, can anyone suggest another option? > My last criteria is that it has a coherent user community and excellent > docs (strongest point of Gentoo, and from what I recall a weak point of > straight Debian, IMHO). > I'm sure you've considered fedora/planetccrma? This is an oversimplification/caricature, but I've always felt that ubuntu doesn't really trust its users, so sometimes things are much harder to configure than otherwise should be (for instance, "using the command line" is listed under "advanced topics" in the documentation). In other words, it tends to feel more like a macintosh than a linux distro "should," -- or something. =o) I've had to use ubuntu studio, but I have found myself with a ton of audio dropouts in important and stressful situtations, using jack with supercollider. Fernando at ccrma has done a ton of great work -- PD extended (0.39) is available and works great -- I usually compile a vanilla package for my own personal use, too. The latest stable version is on Fedora 8, with Fedora 9 in the works. Also included with the jack package is the new version of jackd (jackdmp) which you can test. The realtime kernels are the best around, IMO, but you can't compile proprietary radeon drivers against them (nvidia works, though -- the newest ones need a patch, and really I believe it would be possible to compile the radeon drivers if you recompiled the kernel with a mean-spirited patch). The community is good as well, and answers to questions are typically prompt and informative -- Nando is especially bright and helpful, and knows where to go to get help if there are kernel problems. On the negative side, I find fedora's default repos kind of lame, and apt-get in ubuntu kills fedora's yum (though yum has improved significantly in the last year). Also, they've tended to take over important software, not include all the features, and then abandon it. For instance csound is not on planetccrma anymore, but in the default repo. It's stuck at 5.03, and doesn't include some opcodes like the loris stuff, nor the csoundapi~ class for Pd. They keep a version of jack which sometimes conflicts with ccrma's for a couple of days, until Nando saves the day on his end. You have to rebuild mplayer to work with jack. Livna is better than Freshrpms, but if you need cinelerra you'll have to go with the latter (though it's possible to maintain a machine that uses both, I don't recommend it). Fedora also anecdotally tends to be a little less stable on certain hardware, but I've had very few problems with the rt kernels for at least a year now. Fedora is meant to be very quickly developed, and new versions come out every six months or so, which means that at some point you'll have to be satisfied with the state of your machine when your packages are no longer updated, or you'll have to upgrade to the new distro. I really think that the best thing to use is what you're used to -- workarounds for the "gotchas" become second nature, and you tend to forget that they were a problem in the first place. I have no experience with HFS partitions under fedora. Matt

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[PD-announce] pdpedia is back!
by Hans-Christoph Steiner 12 Jul '08

12 Jul '08

After a little holiday due to an OS upgrade, pdpedia is back! Please let me know if it isn't working for you: http://pdpedia.org .hc ------------------------------------------------------------------------ ---- "[W]e have invented the technology to eliminate scarcity, but we are deliberately throwing it away to benefit those who profit from scarcity." -John Gilmore _______________________________________________ Pd-announce mailing list Pd-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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int.lib for PD? (interpolating between numerous preset values)
by Joseph Barrows 12 Jul '08

12 Jul '08

Hi Pders, I recently saw a presentation by a fellow using Max and he was using int.lib that allowed using a 2D space populated with presets, and as he moved a marker around the space int.lib would smoothly interpolate all the values in the various presets depending on the distance from their markers in the 2D space he was using it to set up 'moods' for effecting the audio, so he had more of a conductor role than an individual musician role when controlling his patch I was wondering if there is anything like this for PD (interpolation of groups of values) -- Joseph Barrows live video performance; web site design; new media artist jjbarrows.artwww.net jjbarrows(a)artwww.net

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Re: [PD] frequency components analysis
by Julian Villegas 12 Jul '08

12 Jul '08

Hi Isidro, Thank you for the link, the problem is that I want to extract the frequency components of a sound in realtime, like from a mic connected to my computer, and AFAIK the ATS object works only with files. Do you have any other ideas? Does anybody else? Thank you!

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Pd-list July 2008