Pd-list February 2007

pd-list@lists.iem.at

148 participants
295 discussions

2 pole lpf with resonance?
by Vreahli the Audio Bandit 16 Feb '07

16 Feb '07

Hiya. Okay - so here's the skinny. I set out about a half hour ago to figure out how to set up a 2 pole low pass filter with resonance in Puredata. Looks like that's apparently set up with a biquad~ filter. I read through the rather handy looking information over here at http://www.musicdsp.org/files/Audio-EQ-Cookbook.txt. I came out of that a bit more confused than when I went in. I also bumped in to http://www.creativesynth.com/MAXMSP/001-SynthBuildingMSP/sbm_03.html - which left me drooling quite a bit more than when I went in. Is there any way to set up a LPF with a live-tweakable audio rate resonance and frequency setting while avoiding doing the biquad math by hand? I can't even figure out how to get my computer to crunch those numbers for me. Thanks in advance for helping me out with this seemingly simple yet convoluted question.

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Re: [PD] GEM - alpha blending of images over movies
by Item State 16 Feb '07

16 Feb '07

thanks for reply, oli. the png is regular 24bit RGB with alpha channel, not greyscale: http://sciss.de/test/txtactiLS.png (the colours are grey but the image is saved RGBA). i couldn't get the alpha channel to scale using [pix_alpha]. also the help says, this objects replaced the alpha channel of a certain input colour, which is not what i want (i already have 8bit alpha channel and i want the alpha values to scale. like i have the white text which is around alpha 80%, i have the background which is alpha 0%, i have grey underlay which is around alpha 30%, so when the fade-in is half done, the pixels need to have alph 40%, alpha 0%, alpha 15% etc.) i tried [pix_gain] but it seems to ignore the alpha channel (see attached gemTest2C.pd). also for fading to grey, i don't know how to do it. [pix_contrast] doesn't work, neither changing contrast nor saturation influences the movie. the same happens with [pix_rgb2hsv] --> [pix_gain] --> [pix_hsv2rgb]. the movies are encoded quicktime/jpeg since this is comparably cpu-unintensive. here's an example: http://sciss.de/test/051_eye1.mov thanks for your help. ciao, -sciss- --- Oli44 <oli44(a)manga-burgah.net> wrote: > Le samedi 17 fÃ©vrier 2007 Ã 04:44 +1100, Item State > a Ã©crit : > > > hi, > > > > i'm trying to port a former jitter patch to pd/gem > > > (http://lists.puredata.info/pipermail/pd-list/2006-11/043853.html). > > i have problems getting overlayed images to > display > > properly. i have four rectangles fed by pix_movie, > > then i need to fade in and out a rendered text > image. > > i tried using pix_image -> pix_texture and [alpha > 1]. > > the images are .png with transparent portions. i > once > > got it to display correctly, but now if i open the > > patch, the videos all show up with wrong colours: > > > > http://sciss.de/test/Bild%201.png > > (see attached patch gemTest2.pd) > > > > > i guess your png pictures are in grayscale and the > videos not. hence the > "bug" > > > > once i remove the pix_image and pix_texture, save > the > > patch and re-open it, the videos show up correctly > > again: > > > > http://sciss.de/test/Bild%205.png > > (see attached patch gemTest2B.pd) > > > > ... also, i don't know how to fade in the text > (the > > "action" string). is there an alpha-channel > multiplier > > for pix_image? thanks for hints! > > > > > you should add a [pix_alpha] in the render chain and > send it [ 1 > ( message > > > > > is it possible to stretch the video so that the > > rectangle stays the same, but only the top part of > the > > video is shown (vertically zoomed without > > interpolation, so that you can see the pixels)? > > > > > try the pix_roll object > > > > ciao, -sciss- > > > ciao > O. > > Send instant messages to your online friends http://au.messenger.yahoo.com

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(no subject)
by marco trevisani 16 Feb '07

16 Feb '07

Hi everybody, subject question is not very precisely organized...:-) here is the question: is there a way in PD to stream P2P a mp3 or ogg file, in real time, i mean while the machine is econding it? I was thinking about something like this Sending oggwrite~ to oggamp~ ...question then is... can oggwrite~ send while enconding to oggamp~ and can oggamp~ stream over the internet an ogg file while is getting enconceded??? IN few words i would need to do the same as streamin~ and streamout~ but with a ligther data info streamming because we are organizing a concert with musicians playing in Scotland and musicians playing in Puerto Rico both using PD, and of course at the same time..:-). Network connection is quite decent but i suspect streamin~/out~ would be too much for our bandwidth. any suggestion? thanks a lot, marco trevisani -- marco trevisani http://marco.trevisani.net marco(a)trevisani.net

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line object with done-bang
by Item State 16 Feb '07

16 Feb '07

hi, is there another [line] like object that like in max has a second outlet that bangs once the line is done? thanks, -sciss- Send instant messages to your online friends http://au.messenger.yahoo.com

2 1

a little pitchshifter
by Thomas Mayer 16 Feb '07

16 Feb '07

Hello, after all the discussion about looping samplers etc., I have made a small abstraction patch that does pitchshifting. It uses susloop~ and the higher math externals, and I don't know if standard Pd has all those installed. Left input takes the sound, right input transposion in halftones. It is designed for a sample rate of 44100 Hz, but you can change that with a little editing. So, yet another thing, anyone should have patched in Pd accomplished ;) cu Thomas -- "Prisons are needed only to provide the illusion that courts and police are effective. They're a kind of job insurance." (Leto II. in: Frank Herbert, God Emperor of Dune) http://thomas.dergrossebruder.org/ #N canvas 0 0 720 590 10; #X obj 82 -88 inlet~; #X obj 211 -86 inlet; #N canvas 0 0 450 300 (subpatch) 0; #X array \$0tmp 441 float 3; #A 0 -0.106185 -0.0540063 -0.0127022 0.00920458 0.0229685 0.0235601 0.0147748 0.00255383 -0.0117477 -0.029018 -0.0371065 -0.0266764 -0.01163 0.00659637 0.0260445 0.0403555 0.0533875 0.0748204 0.0984184 0.117513 0.134454 0.13526 0.128132 0.123279 0.111551 0.0994809 0.0909294 0.0883182 0.0926241 0.103257 0.112716 0.101809 0.07467 0.0439283 0.0164779 0.0092127 0.0168655 0.017182 0.00235639 -0.0272021 -0.0600168 -0.0754001 -0.0680977 -0.0499543 -0.0432302 -0.05446 -0.0741609 -0.094762 -0.0968289 -0.0785967 -0.0595343 -0.0499472 -0.0617646 -0.100479 -0.149678 -0.189083 -0.202568 -0.167854 -0.0882873 0.00740555 0.0845767 0.11538 0.101615 0.0744742 0.0817364 0.1338 0.206899 0.254833 0.236094 0.167538 0.08074 0.0198523 -0.00280562 -0.0120124 -0.0236579 -0.0517252 -0.0704733 -0.0591173 -0.0393743 -0.0451914 -0.0982264 -0.191212 -0.269186 -0.260506 -0.157968 -0.0155224 0.0911387 0.113726 0.0511649 -0.039854 -0.0914126 -0.0970605 -0.0803092 -0.0737249 -0.0957617 -0.136014 -0.168719 -0.187146 -0.206249 -0.234923 -0.271748 -0.2811 -0.244203 -0.170868 -0.0834151 -0.025433 -0.00844547 -0.0127093 -0.00674823 0.0305237 0.0906344 0.155294 0.20376 0.229389 0.239999 0.239013 0.220275 0.175407 0.100855 0.0100861 -0.0690658 -0.128416 -0.152928 -0.135361 -0.0946446 -0.0293252 0.0490696 0.114369 0.152064 0.165204 0.159164 0.142318 0.137906 0.135107 0.121815 0.0955453 0.0549795 0.0167241 -0.0127754 -0.0350254 -0.0563476 -0.0797106 -0.0998407 -0.105706 -0.0908465 -0.0709783 -0.0733562 -0.10018 -0.140021 -0.181301 -0.189799 -0.162353 -0.127477 -0.100925 -0.0888683 -0.0839598 -0.0659234 -0.0266852 0.0163485 0.0421273 0.0339047 -6.10472e-05 -0.0366404 -0.0618875 -0.0608451 -0.0432504 -0.0258021 -0.0111588 -0.00198996 0.00105282 -0.000670925 -0.00724899 -0.0297588 -0.0506442 -0.0520071 -0.0323661 0.0141226 0.0637442 0.0923898 0.0834509 0.0421003 -0.0125075 -0.0611397 -0.0841938 -0.0911498 -0.0975763 -0.110685 -0.128677 -0.136929 -0.118983 -0.0801784 -0.0260838 0.0304572 0.0779609 0.129853 0.188008 0.250583 0.30175 0.319952 0.287545 0.218294 0.145099 0.0824345 0.051274 0.0412449 0.0286728 0.00957864 -0.0142652 -0.0388964 -0.0533098 -0.0601829 -0.0796644 -0.116504 -0.163175 -0.200724 -0.208881 -0.186465 -0.149207 -0.120672 -0.105924 -0.0922226 -0.0724974 -0.0310834 0.0185317 0.0466577 0.0359373 -0.0175125 -0.0784202 -0.122241 -0.127245 -0.103617 -0.0820542 -0.0735199 -0.0852412 -0.100446 -0.106204 -0.0928356 -0.0626394 -0.0190402 0.0279718 0.0707685 0.108599 0.126559 0.116771 0.0824798 0.047526 0.0442733 0.0971365 0.189006 0.284083 0.340769 0.320015 0.2321 0.109329 -0.00862364 -0.0872149 -0.113936 -0.108625 -0.100036 -0.0911644 -0.0897672 -0.109259 -0.132274 -0.150958 -0.16057 -0.13862 -0.0820216 -0.00889063 0.0446131 0.0597059 0.0161767 -0.0818247 -0.186849 -0.252405 -0.243975 -0.179601 -0.0987114 -0.0347199 -0.0124737 -0.0332652 -0.063301 -0.0662516 -0.0426823 -0.00311688 0.0384701 0.0585248 0.0538086 0.0453903 0.0540694 0.0807298 0.116936 0.166183 0.21663 0.257736 0.27761 0.275063 0.266489 0.238224 0.195982 0.156571 0.112494 0.0641594 0.025199 -0.0124958 -0.0482873 -0.0650496 -0.0672974 -0.0626503 -0.0538243 -0.0462175 -0.0475489 -0.0506245 -0.0572374 -0.0605118 -0.0505367 -0.0198358 0.0172896 0.0331306 0.0325506 0.00335849 -0.0241708 -0.0403517 -0.0286639 0.0141044 0.0670042 0.0893014 0.0659154 -0.000491504 -0.0666533 -0.0911129 -0.0699635 -0.0266203 -0.00147532 -0.00602521 -0.0363886 -0.0561931 -0.0470731 -0.028675 -0.0167346 -0.0351032 -0.0744 -0.10853 -0.114029 -0.0857576 -0.0369682 0.0073663 0.0251372 0.025268 0.00791814 -0.00504764 0.00802984 0.0435246 0.093765 0.128757 0.124143 0.0746776 0.00582725 -0.0476502 -0.0582382 -0.0289716 0.00326688 0.0136055 -0.010659 -0.0513357 -0.0756168 -0.069207 -0.0440092 -0.0272129 -0.0360193 -0.0746693 -0.11858 -0.140717 -0.129394 -0.0818656 -0.0118205 0.0575994 0.100652 0.106613 0.075463 0.0193142 -0.0343591 -0.0612631 -0.0590145 -0.0442295 -0.0276095 -0.0242553 -0.0375354 -0.0481698 -0.0456472 -0.0321041 -0.015884 0.0022113 0.0157819 0.0235444 0.0269887 0.0216165 -3.19887e-05 -0.0359117 -0.0584469 -0.0590698 -0.0304863 0.0260463 0.0766921 0.100343 0.0886767 0.0551359 0.0195422 -0.00435408 -0.00843406 -0.00407349 -0.00432001 -0.0179798 -0.0417099 -0.0722238 -0.111829 -0.142817 -0.148316 -0.132697 -0.0880971 -0.0162963 0.0483932 0.092435 0.12059 0.139396 0.153085 0.171113 0.187986 0.168779 0.119137 0.0507633 -0.0224157 -0.0699934 -0.0931914 -0.0954058 -0.0921856 -0.0977115 -0.10631 -0.111141 -0.103924 -0.0887811 -0.0716376; 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jit.glue equivalent in GEM
by Item State 16 Feb '07

16 Feb '07

hello, is there a GEM object equivalent to [jit.glue] in max/jitter? thanks, -sciss- Send instant messages to your online friends http://au.messenger.yahoo.com

4 5

GOP control with messages
by Hans-Christoph Steiner 16 Feb '07

16 Feb '07

Is it possible to move GOP visible box using messages? I mean the red box that determines what is visible. This would be very handy to be able to do. .hc zen \ \ \[D[D[D[D

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GEM doesn't compile in Fedora Core 5
by Pete Redest 16 Feb '07

16 Feb '07

Hi there. New to the list. Is it OK to ask about GEM here? If yes, here is the question, if not, just advice me and I will try something else. This is the problem: 1. Trying to compile GEM in Fedora Core 5. - downloaded the packages gem-0.90.0.tar.gz and GemLibs-LINUX-1.tar.gz from http://gem.iem.at/download.html and expanded them. - after installing imake, I compiled GemLibs successfully. (nowhere is written or hinted in an error message that building GemLibs requires imake - had to find this from the name of a missing program, makedepend, and googling to find where it lives). 2. went to gem-0.90.0/src/Gnu and did ./configure $ ./configure ... checking for glInitNames in -lGL... no checking for glInitNames in -lMesaGL... no OpenGL is mandatory 3. Initially I thought that something is wrong with my OpenGL libs, but nothing is wrong with them. I even downloaded and compiled, with all the pain that it is to do anything like this in Linux, the latest Mesa packages, version 6.5.2, and installed them. Their demo works just fine, even when not using Mesa but the libraries created by nVidia software. 4. I concluded that something is wrong with ./configure. Indeed, I confirmed googling the web that the validation of existence of functions in some configure scripts is broken. 5. Found a suggestion on the web to the effect of re-generating "configure", using autoconf. These are the steps: $ rm -f aclocal.m4 $ autoupdate $ aclocal-1.4 $ autoconf aclocal.m4:36: error: m4_defn: undefined macro: _m4_divert_diversion autoconf/libs.m4:134: AC_CHECK_LIB is expanded from... aclocal.m4:36: the top level autom4te: /usr/bin/m4 failed with exit status: 1 That is, the autoconf data scripts are also broken, at least for Fedora Core 5. 6. went googling again for _m4_divert_diversion and got a bzillion postings about this, all discussing how screwed is the autoconf system that for its continuing evolution no two versions of one utility are compatible with any other, or maybe the same, version of another utility, that older scripts didn't generate quotes, and a bunch of other "whatevers". That is the reason why it was recommended to use aclocal-1.4, an old version, rather than the current one, named just "aclocal" (v1.9). With all the talking about this, I did not find a script-solution that can "fix" old versions of autoconf scripts to bring them up-to-date, to be usable in FC5. Perhaps there is such magic script, or some other way to migrate the software automatically to FC5 or FC6. Do you know of one?. Or how can I compile GEM in FC5 in some other way? Thank you for any help or hints. TioP PS. Of course it is expected that the solution found be compatible with the Fedora Linux ways, i.e. wasting 1/2 day adjusting things, googling, editing, re-compiling, filling-in missing packages, finding left-and-right that one package needs another 4 or 5 new or updated packages, that in turn require me to upgrade X and C libraries, i.e. another 50 packages, which in turn require to upgrade also GNOME, Tcl/Tk, etc, etc, which in turn .... perhaps I better upgrade to FC6, which of course won't solve the problem either. And all this will make me appreciate more the wonderful life that we, the masochists that use Linux, are so used to live. May be it will take a little longer than 1/2 day. May be a day and a half ... or a week? or 2. _________________________________________________________________ FREE online classifieds from Windows Live Expo buy and sell with people you know http://clk.atdmt.com/MSN/go/msnnkwex0010000001msn/direct/01/?href=http://ex…

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Re: Re: Font and Text size; how to make pd patches easier on the
by John H 15 Feb '07

15 Feb '07

Thanks for these responses on the font/gui issue. These are good references for future developments in this area. John Frank Barknecht wrote: >The only reliable way to change the font size in plain Pd is to use the FONT >BOMB menu you can open with Edit->Font. However different operating >systems have different default resolutions so what looks good on >Windows doesn't look good on Linux normally (and result in comments >stretching into and over objects etc). You can also set the default >font size for new patches with the "-font 12" startup option. And >then you can select a different font face with "-typeface ..." carmen wrote: >the main issue is pd (server) thinks it knows what the font size is after rendering on the >client. so you get the overlap and sizing issues since its not using bounding boxes from the >client to control positioning. if you just want to deuglify the text, configure Tk with >--enable-xft (linux) or set the font to something ClearType (win XP or greater) then change >the font. to do this you might still have to find/replace all instances of courier to tahoma in >the pd/src/*.{c,tk} files , or maybe the pdsettings mechanism obsoleted this need.. "bd pd" wrote: >I thought i would try to answer your first post with my own first.. > >in the build im using (Pd-0.39.2-extended-test4) there is an edit menu >(only when a patch window is open) which has a "font" and "tidy up" >option. I was glad to find it too.

1 0

mp3cast~
by Richard Lewis 15 Feb '07

15 Feb '07

Hey all, Does mp3cast~ still exist? If so, does anyone where/how to get it? Or even better, is there a Debian package that contains it? Cheers, Richard

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Pd-list February 2007