Pd-list December 2007

pd-list@lists.iem.at

129 participants
239 discussions

How to use CVS (was: Granular Synthesis Study)
by Uğur Güney 17 Dec '07

17 Dec '07

# Hi, # I looked at http://pure-data.cvs.sourceforge.net/pure-data/ There are lots of externals and abstractions there. (Most of which I saw/remember in Pd-Extended package) # I found [nqpoly4] here: http://pure-data.cvs.sourceforge.net/pure-data/abstractions/nqpoly/nqpoly4/… browsing the folders. But couldn't find [polypoly~]. Is there an easier way to download a whole folder, instead of opening a patch's own page and clicking download. And how can I search through this CVS archive? Do I need a special software for this kind of jobs? -ugur- > > # In my PD distro (0.39.2-extended-test7) [polypoly~], [nqpoly4] does > not > > exist. So I can't use them. > > They are just abstractions, you could get them from CVS and then use > them. Both really help with creating and managing many copies of an > abstraction. > > > Frank Barknecht _ ______footils.org__ >

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Re: [PD] -nogui question
by Daniel Wilcox 17 Dec '07

17 Dec '07

On Dec 17, 2007 7:33 AM, Daniel Wilcox <danomatika(a)gmail.com> wrote: > > > On Dec 17, 2007 3:06 AM, Roman Haefeli <reduzierer(a)yahoo.de> wrote: > > > On Mon, 2007-12-17 at 01:15 +0100, Daniel Wilcox wrote: > > > I was under the impression that starting pd without the gui would take > > > out some of the slow downs > > > > afaik, this is only half true. please someone correct me, if i am wrong, > > > > but i think, only the gui drawing of the windows, that are actually > > displayed on screen (this includes also minimized windows), uses > > additional cpu power. if your main patch shows only [pd allyourstuff] > > box, then almost nothing has to be drawn. > > > That's basically how I have it, each major subsection is in a subpatch: > [pd score], [pd drums], etc so there are no dynamic objects at the root > level of the patch. > > > > > > > > assoicated with the gui such as gui object generation. I have some > > > objects in my rc-patches that > > > build the object based on its creation args such as [rc-seq 16 4] > > > makes 16 toggle boxes with 4 beat > > > divisions. Now if I have a bunch of these it slows down the loading > > > of my patch considerably, which > > > I understand ... but it also slows down loading in -nogui mode which I > > > don't. So is -nogui mode doing all > > > of the tk work but just not drawing the window? > > > > no. as i said before, probably not so much is used for tk. so you gain > > not that much by starting pd with -nogui. i'd say most of the cpu time > > on patch load is useed for generating all the dynamic objects, which > > also includes recompiling of the dsp-graph, which is - again: correct > > me, if this is wrong - done on every instantiation of an (~-?) object. > > if this is true, the cpu time is increased exponentially (or at least > > progressively of some kind) with every new object, that needs to be > > instantiated. at least that is what i experienced myself. > > > > > The main problem is this makes patch loading realllyyy slow on my > > > performance computer, PIII 500. > > > > how slow? i mean, does it matter how slow the patch loads _before_ the > > performance? does it even take more than one minute? > > > > Yeah > 1 min, I load a new patch each time so it's unacceptable to to wait > this long on stage. > I have to fix these problems before I go on tour for 3 months ... I'll > mail the dates if you want to > see a pd powered explosion/crash :D > > > > > > > > So I'm going to actually > > > rebuild all of the songs using static objects instead of dynamic > > > ones ... which is too bad because the > > > flexibility of the dynamic objects was nice when creating the song > > > initially. So is that my only option > > > for now, or is there some super trick I haven't noticed? > > > > probably yes: try to switch dsp off, while all the dynamic creations are > > going on and switch it on only afterwards, when everything is created. > > > > [loadbang] > > | > > [t b b b] > > | | | > > | | 'switch~ off' > > | | > > | 'create all the dynamic stuff' > > | > > 'switch~ on' > > > Ahh, now that makes sense I will try this and see if it helps. > > > > > > > i could save a lot time by doing this in netpd. > > > > roman > > > > Since I'm using sssad I hacked a load send to it since a loadbang, which I > orginally tried, occurs *before* > the gui objects are created ... which means they don't receive their > contents and the stays song is empty. > > > > -- > Dan Wilcox > danomatika > www.robotcowboy.com > -- Dan Wilcox danomatika www.robotcowboy.com

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string padding
by Andy Graybeal 17 Dec '07

17 Dec '07

greetings i'd like to pad a string... say for instance i want to pad the string "andy" and "ian" to be able to have a total of 10 characters, and the padding character will be an underscore. so the end result would add 6 underscores to the string "andy" and seven underscores to the string "ian": "andy______" "ian_______" i poked around through extended and did a search on the list archives for "character pad" and "string pad", nothing came up in the archives, and the only things i found in extended are mrpeach's [str] help examples, and moocow's [string2any], [any2string] help examples. it looks like mrpeach's stuff is the closest to what i want, but i don't think it's what i want. after tofofmtl introduced me to pdmtl, i expected there would be some string handling in to coincide with the list stuff they have too, but nothing there. thanks, andy

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Granular Synthesis Study
by Uğur Güney 16 Dec '07

16 Dec '07

# Hi, # Recently I heard the name of Gabor, a phyisict who had applied the idea of quanta in acoustics. I didn't read any of his papers but as I understand what I read about him, he tried to set the mathematical basis of producing any sound from "tiny sound particles". And today this idea is called "granular synthesis". There is a book about it "Microsound" by Curtis Roads. I will look at the book and investigate the idea further. # Here, I'm attaching some patches about the subject which I studied this morning and want to share with you :-). there is a unit generator which produces sinusoidal oscillations enveloped with gaussian distribution curve. (kleineWelle.pd) The output is a small wave packet. (you can also look at kleineWelle-help.pd) metroWelle, produces periodic wave packets. [metroWelle length_of_wave_packet freq_of_osc period] granulator.pd is the main patch and the area for free study. You can add more metroWelle's and listen to their sum. # This is a very primitive kind of granular synthesis. As I now realized granular synthesis needs enormous control parameters. Preparing every wave packet by hand is very hard. # Have a nice day! -ugur guney-

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Re: [PD] PD VideoPedia Project
by Jean-Noël Montagné 16 Dec '07

16 Dec '07

OK, there are and there will be more videos about PD on youtube and colleagues. The problem is not to organize PD contents on youtube, this monopolistic video vacuum-cleaner, but to organize the links to the youtube/dailymotion etc. PD videos to find the right video at the right time. Some solutions: -create a "video links" page on the official puredata.info wiki, with categories index, links and descriptions of each film +tag about the language of the video. -create an international "video links" page on pdpedia wiki, with categories index, links and descriptions of each film+tag about the language of the video. but I would prefer: -Install a PDmotion video server, exempted from advertising, ( Oggvorbis/theora/icecast or Red5 driven ), and use PDpedia. .... JN

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Pix Film crashing
by Donal Carey 16 Dec '07

16 Dec '07

Hi All I'm using a combination of coll and makefilename in order to output a list of quicktime clips to pix_film. I'm using coll to load a list of 4 clips and then outputting them through makefilename into pix_film, the first clip loads in fine and it play's, however, when I hit the next message on coll to output the second clip filename, nothing happens. I am getting no error message in the pd window, it just says that the second clip has been loaded with no errors, but I cannot play back the clip in the GEM window. When I try to load in the third clip PD crashes out (constantly). The clips are all quite small (under 2mb) so my question is, do I need to reset pix_film in some way after each clip has finished playing so that it will play the next clip? I've attached a screenshot of my patch so you can see what I'm doing. Thanks and regards Donal

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problem with pdp_theonice~
by Jack 15 Dec '07

15 Dec '07

Hello list, hello Yves, I have a problem with the patch 'giss-2.0.pd' (pd-extended 0.39.3- extended – MacosX.4.11 – X11 1.1.3 – XFree86 4.4.0). I have created a channel on http://giss.tv/. I use a FireWire camera and i see the preview (no problem). When i push the start bang in the emission, 'frames emited' go to 39 or 40 or 41 then stop and Pd freezes during 5 minutes then output : 'shutting down encoder'. here the output from PD : pdp_theonice~ : setting password to ***** pdp_theonice~ : connecting to http://stream.giss.tv:8000/****.org pdp_theonice~ : connection request but a connection is pending . . . disconnecting pdp_theonice~ : connection thread 26104523 launched pdp_theonice~ : connecting to port 8000 pdp_theonice~ : logged in to stream.giss.tv pdp_theonice~ : connecting child 26104523 exiting. . . . pdp_theonice~ : initializing encoder. . . pdp_theonice~ : encoder initialized. pdp_theonice~ : writing headers. . . pdp_theonice~ : start streaming at 7 frames/second (freeze here) then 5 mn later : pdp_theonice~ : could not write audio packet (ret=-1). pdp_theonice~ : shutting down encoder pdp_theonice~ : could not write audio packet (ret=-1). pdp_theonice~ : could not write audio packet (ret=-1). Note : it's the same with a quicktime video any idea ? Jack

2 1

windows latency down to 15 milliseconds
by Justin Robert 15 Dec '07

15 Dec '07

I was using my old laptop running xubuntu for a while because the latency time of running pd on windows. My newer Gateway laptop has poor performance with the sound card in Linux, so I have to run windows on it. Before, the lowest I could get it the latency without pops was 60 milliseconds. This was very frustrating, because allot of what I am doing is real-time guitar processing and 60 milliseconds is way too slow to use. But I found a way to get it much much lower. First by using the asio4all driver http://www.asio4all.com/ with built in sound. This makes a huge difference. I have tried other asio drivers, but this one performs incredibly with pd. I cannot say how it will perform on external cards, but on my built in Sigmatel, it works great. Second, by setting windows xp to run pd at real-time priority. You do this by right clicking the pd process in windows taskmaster and setting it to real time. Doing this I can get the latency as low as I had it on Linux, and possibly lower. I haven't tried lower than 15, so I'm not sure ;) But I've played for over an hour on windows with no glitches or pops, well other than the ones I was making on purpose. Justin Robert www.justinrobert.com

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Re: [PD] windows latency down to 15 milliseconds
by Justin Robert 15 Dec '07

15 Dec '07

Yeah, that would be cool. I've installed it on 3 different machines with no problems on any of them. Two have realtek AC97 hardware one with P4 and the other Celeron processor, and the laptop with sigmatel sound hardware is a amd64. I hope that helps. Justin Robert www.justinrobert.com

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Re: [PD] windows latency down to 15 milliseconds
by PSPunch 14 Dec '07

14 Dec '07

Mathieu, > On Fri, 14 Dec 2007, PSPunch wrote: > >> This application (at least the version I have installed) has extremely >> political messages in its GUI. I hope it does not effect consumers >> impressions towards Alesis. > > I'm curious, what is it? Well, the application has two different interfaces you can choose from... "Simple" and "Advanced", obviously the later giving more precise control. On the icon to switch modes, there are images of recognizable figures. Einstein on the "advanced" button, and George Bush on "simple." -- David Shimamoto

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Pd-list December 2007