Pd-list March 2010

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152 participants
270 discussions

Re: [PD] reson~ from max in pd
by Björn Lindig 10 Mar '10

10 Mar '10

O.k. that helps a lot! Thanks. I'll read on, for the math thing. If anybody has any suggestions, how to solve the problem, it would be great. I got curious about this stuff and am a litttle impatiant to know how it works ... Am Mittwoch 10 März 2010 00:12:30 schrieben Sie: > Check the 'cyclone' lib, it has Max clones. I think there is at least > one other reson~ included in Pd-extended. > > .hc > > On Mar 9, 2010, at 5:08 PM, Björn Lindig wrote: > > Hi, > > > > a friend asked me, wether there is a object similar to the [fffb~] > > in max/msp > > (a "fast fixed filter bank") in pd. I did not find it instantly so I > > started > > to build one after the formula posted in [reson~]s help in max: > > > > y[n] = gain * (x[n] - r * x[n-2]) + c1 * y[n-1] + c2 * y[n-2] > > > > I appended a patch, that I created after this formula. The Problem > > is, that I > > would love to klone the max-object, but at the moment I have only > > inlets for > > r, c1, c2 and gain. What I need is the math to calculate the values > > for r, c1, > > c2 and gain for given center frequency, Q/Bandwith, and gain. > > > > I started reading the chapters on time shifts and delays and filters > > in > > miller-puckettes book and the book of J. O. Smith. But to be honest, > > I did not > > yet understand much of what is writen there. So I thought, there > > might be > > someone arround here, who can give me a fast answer, or who can > > point me into > > the right direction. > > > > If it is the best to try resonz and resonr (I'm on train building pd- > > extended, > > used vanilla before), I'll accept that. On the other hand, I would > > be realy > > curious about the math that is used to solve this problem. > > > > Thank you very much! > > > > Bjoern > > > > > > > > #N canvas 611 38 615 510 10; > > #X obj 105 -13 inlet~; > > #X obj 105 394 outlet~; > > #X obj 153 218 delwrite~ del3; > > #X obj 125 348 delwrite~ del2; > > #X obj 105 121 +~; > > #X obj 104 239 +~; > > #X obj 104 320 +~; > > #X obj 125 99 *~; > > #X obj 122 218 *~; > > #X obj 138 299 *~; > > #X obj 239 -10 inlet~; > > #X text 239 -27 r; > > #X obj 307 -10 inlet~; > > #X obj 383 -7 inlet~; > > #X text 303 -33 c1; > > #X text 389 -26 c2; > > #X obj 124 14 delwrite~ del1 1; > > #X obj 125 78 delread~ del1; > > #X obj 123 198 delread~ del2 1; > > #X obj 138 278 delread~ del3 1; > > #X obj 427 134 samplerate~; > > #X msg 387 134 1; > > #X obj 387 155 /; > > #X obj 387 91 loadbang; > > #X floatatom 387 198 0 0 0 0 - - -; > > #X obj 387 112 t b b; > > #X obj 387 176 * 1000; > > #X obj 387 221 s one_sample; > > #X obj 125 34 r one_sample; > > #X obj 125 55 * 2; > > #X obj 131 177 r one_sample; > > #X obj 147 254 r one_sample; > > #X obj 105 150 *~; > > #X obj 455 -4 inlet~; > > #X text 456 -22 gain; > > #X connect 0 0 4 0; > > #X connect 0 0 16 0; > > #X connect 4 0 32 0; > > #X connect 5 0 6 0; > > #X connect 6 0 1 0; > > #X connect 6 0 3 0; > > #X connect 7 0 4 1; > > #X connect 8 0 5 1; > > #X connect 9 0 6 1; > > #X connect 10 0 7 1; > > #X connect 12 0 8 1; > > #X connect 13 0 9 1; > > #X connect 17 0 7 0; > > #X connect 18 0 8 0; > > #X connect 18 0 2 0; > > #X connect 19 0 9 0; > > #X connect 20 0 22 1; > > #X connect 21 0 22 0; > > #X connect 22 0 26 0; > > #X connect 23 0 25 0; > > #X connect 24 0 27 0; > > #X connect 25 0 21 0; > > #X connect 25 1 20 0; > > #X connect 26 0 24 0; > > #X connect 28 0 29 0; > > #X connect 29 0 17 0; > > #X connect 30 0 18 0; > > #X connect 31 0 19 0; > > #X connect 32 0 5 0; > > #X connect 33 0 32 1; > > > > _______________________________________________ > > Pd-list(a)iem.at mailing list > > UNSUBSCRIBE and account-management -> > > http://lists.puredata.info/listinfo/pd-list > > --------------------------------------------------------------------------- > - > > Using ReBirth is like trying to play an 808 with a long stick. - > David Zicarelli

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diff frame from previous frame with Gem
by Hans-Christoph Steiner 10 Mar '10

10 Mar '10

I am trying to make a simple patch where the current video frame is [pix_diff]'ed against the previous video frame. I can get it going manually, but I would like it to happen every frame. I think I got close, but did manage to create a bizarre effect: .hc ---------------------------------------------------------------------------- I have always wished for my computer to be as easy to use as my telephone; my wish has come true because I can no longer figure out how to use my telephone." --Bjarne Stroustrup (creator of C++)

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Re: [PD] gridflow on windows
by Matteo Sisti Sette 10 Mar '10

10 Mar '10

> hello, in gridflow/doc/index.pd there a start for learning > many objects Thank you for the hint. However, the point was that the [pddp_open] object (or abstraction?) used in the tutorial patch included in gridflow fails to create, so either the help patch relies on an object that is not part of Pd Extended and is not distributed with GridFlow, or there is something wrong with my installation... ----- Mail Original ----- De: "pvallet" <publicat51(a)free.fr> ?: pd-list(a)iem.at Envoy?: Lundi 8 Mars 2010 19h43:20 GMT +01:00 Amsterdam / Berlin / Berne / Rome / Stockholm / Vienne Objet: Re: [PD] gridflow on windows Pddp is the PureData Documentation Project i'm not using it so i don't know much about it, but you can probably download a package from the net Greetings, p. Matteo Sisti Sette a ?crit : > > Oh sh##, > > I see it needs Pd Extented. I was trying it with Pd Vanilla. > > > > Maybe it would be a good idea to mention it in the installation readme > > and/or home page, or is it obvious? > > > > It seems it works for the moment. However, in the tutorial intro > > (gf_tutorial_intro.pd) there are a lot of [pddp_open] objects that > > cannot create. > > > > What is pddp_open? Where can I get it? > > > > thanks > > m. -- Matteo Sisti Sette matteosistisette(a)gmail.com http://www.matteosistisette.com

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Re: [PD] image grid in GEM
by Ben Baker-Smith 10 Mar '10

10 Mar '10

You could use [folderpanel] to [folder_list] to [msgfile] and then read filenames from [msgfile] as you need them. See the attached example. -Ben >Hi Ben, >great work your patch.- - But do you think, that I could keep the images >dynamic and take always new images ? The images would be always in the >same folder, incremented by one: image 20, image 21, ... >thanks ! >fraenk B. Bogart schrieb: > Hi Frank, > > Use "rectangle", not pix_draw (its slow) > > If you can put images in a pix_buffer it'll be really fast. > > Here is a 3x3 grid of images in gem (with lots of extra complexity) > > http://www.ekran.org/pd/patches/gem-image-grid.tgz > > ..b.. > > Fr?nk Zimmer wrote: >> Hi, >> I did an image grid in Processing.- Every 10sec a routine is looking >> images in a folder and displays them in an image grid of 8x8 images. >> The Processing sketch does not run very stable, so I would like to >> know , if already somebody did try this in Pd.- Is there a more >> clever way, than using [pix_draw] and [translate] for this? >> thanks.- >> best, fraenk

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Re: [PD] [print]
by Marco Donnarumma 10 Mar '10

10 Mar '10

Hi Matteo, here doesn't happen neither, I'm using the same Pd-ext version of yours, i.e. 0.42.5-extended-20100127 on Ubuntu Jaunty. > Hmm, doesn't happen for me with Pd version 0.42.5-extended-20100224 > > .hc > > On Feb 23, 2010, at 10:43 AM, Matteo Sisti Sette wrote: > > > Jonathan wrote: > > > > > Hello, > > > I'm using Pd version 0.42.5-extended-20100217 and see that an > > > implicit float message is made explicit (e.g., "1" becomes "float > > 1") > > > by the [print] object. Is the same behavior going to be done for > > > implicit lists? > > > > I don't know the answer to your question, but this doesn't happen in > > Vanilla 0.42.5. > > Is this an _intentional_ change introduced in Extended? > > -- Marco Donnarumma aka TheSAD Independent New Media Arts Professional, Performer, Teacher - Edinburgh, UK PORTFOLIO: http://marcodonnarumma.com LAB: http://www.thesaddj.com | http://cntrl.sourceforge.net | http://www.flxer.net EVENT: http://www.liveperformersmeeting.net

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problem with glsl shaders and texunits
by Ben Baker-Smith 10 Mar '10

10 Mar '10

Hello, I'm in over my head with glsl shaders right now. The attached patch is a test I'm using to try and figure out how to properly use [texunit( messages, but it only partially works. Instead of a clear image of me in front of my webcam, I get a changing series of solid colors. It responds to some rapid movements, so I know my video is making it to the shader. The shaders do nothing to alter the image, they are just there for testing purposes. I've tested by running the video straight through the shaders and it displays clear and normal, as expected. I've read some things about the image size needing to be a power of 2, not sure if that's related. Thanks, this stuff is nuts! -Ben

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List of GEM objects
by Ariane stolfi 10 Mar '10

10 Mar '10

hi I've made this patch with all the objects I've found in the list of objects from the GEM manual, http://finetanks.com/upload/gem_list.pd it might be usefull for someone =) ariane

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Re: [PD] [print]
by Matteo Sisti Sette 10 Mar '10

10 Mar '10

Jonathan wrote: > Hello, > I'm using Pd version 0.42.5-extended-20100217 and see that an > implicit float message is made explicit (e.g., "1" becomes "float 1") > by the [print] object. Is the same behavior going to be done for > implicit lists? I don't know the answer to your question, but this doesn't happen in Vanilla 0.42.5. Is this an _intentional_ change introduced in Extended? -- Matteo Sisti Sette matteosistisette(a)gmail.com http://www.matteosistisette.com

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pix_film alpha
by Martin Eckart 10 Mar '10

10 Mar '10

Hi all, I managed to compile gem with gmerlin and now it reads my MPNG film well, however, it still does not render with a transparent background. I have a series of png images which have the background removed in places so that whatever is underneath shows through. I've converted them to an mpng .avi using ffmpeg -i man%04d.png -vcodec copy reflect1.avi If I do the reverse, ffmpeg -i reflect1.avi -vcodec copy reflect-alpha%04d.png Then the resulting images maintain the transparent background, so I know the conversion process is working properly. Now, when I import this film using pix_film, I just can't seem to make it overlay the way I want it to. The (transparent) background does not appear transparent. If I replace pix_film with pix_image and the original .png images in my patch then everything works the way it should. The reason I'm trying to use videos is that I have thousands of images (most don't need to be transparent) and it loads images/draws faster than pix_image and pix_multiimage tries to load everything into memory at once (kills my laptop around 50 images) and atm I'm too lazy to figure out a buffering system. Can anyone suggest an alpha-enabled codec that might work properly with Gem? Am I missing an object somewhere? Is there a good non-video way to do this? Has someone already made VJ mixing patches that might help me? Thanks, -martin

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file filters
by colet.patrice＠free.fr 10 Mar '10

10 Mar '10

Hello, the pd-extended default file opening and saving on windows is max files, ..., !?? if i set file filters to ".pd" file, next time it is still on ".mxt" extension file, same thing on gui-rewrite... in other words "tk_getOpenFile -defaultextension .pd" doesn't work on windows

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Pd-list March 2010