Pd-list June 2006

pd-list@lists.iem.at

138 participants
210 discussions

wind noise
by Damian Stewart 15 Jun '06

15 Jun '06

hey, i'm working at the moment on an computer vision-based augmented tabletop interface to what is shaping up to be a kind of live map of a naturalistic setting. our aim with this project is to remove any perception of technology from it; we want to give users the feeling that they're some kind of benevolent god-like being perched over a real landscape. using their hands they can interact with this landscape. the vision part and the rendering are taken care of; it needs sound. i thought what might be neat is for the users' hands to act as giant wind paddles - so as they moved them over the landscape, they'd be able to hear the results of their movement as some kind of vaguely realistic wind noise. any pointers on where i might start with this? i've been looking at physical modelling but most of the documents out there seem to deal with modelling acoustic instruments rather than natural acoustic phenomena; perhaps physical modelling might be overkill for what will probably end up being basically a series of noise filters..? -- f r e y live music with computers http://www.frey.co.nz

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Fwd: [PD] how to trigger bang's with a period less than 1 milisecond
by sokratesla 15 Jun '06

15 Jun '06

# I forgot to send the reply message to the list... -ugur- ---------- Forwarded message ---------- From: sokratesla <ugurguney(a)gmail.com> Date: Jun 14, 2006 12:52 AM Subject: Re: [PD] how to trigger bang's with a period less than 1 milisecond To: Miller Puckette <mpuckett(a)imusic1.ucsd.edu> # I'm attaching a patch, in which you can send messages to a metro object. Metro is used to trigger the vline~ object in order to produce a linear ramp in given period. The same period, is turned to frequency and send to a phasor~, which also produces a linear ramp, and both of them are plotted. (but I can not succeed to hold them in phase, when you change the period their phase differences changes) # So, when the period is less then 1 miliseconds, metro continues to send bang with a period of 1 ms. # Err... Why did I need such small periods of bangs, all of a sudden? I realized that phasor~ starts to skip the values 0 and 1 after increasing the frequency after some value. And I searched another ways of producing linear ramps. (Using vline~ idea comes from your patch: C06.signal.to.control.pd, there use have given metro a period of 2 ms) But I'm not sure that this is necessary. :-) -ugur guney- (((# My ultimate aim was producing a pure sinusoid at a frequency of, say at 22200 Hz, and here it as it were 150 (= 22200-22050) Hz. in order to make an example of Nyquist Theorem. I first tried to use the osc~ object but it didn't give the result I expected. (first, I have to figure out why you have used a table which includes a sinus shape which have more periods than one, in the C1.nyquist.pd) I came here from there with the intention of using a tableosc4~ instead of osc...))) On 6/13/06, Miller Puckette <mpuckett(a)imusic1.ucsd.edu> wrote: > > I think you can send 'metro' a message to make it go faster... it's just > the > creation argument that's bounded below by 1 msec. This was a bit of > crash-proofing that I probaly shouldn't have included... > > cheers > Miller > > On Tue, Jun 13, 2006 at 09:51:27PM +0300, sokratesla wrote: > > # Hi everybody! > > # I was fiddling with the "metro" object and realized that it can not > take a > > number less than 1 as the second argument. So, I will trigger a vline~ > > objects with the output of the metro to produce triangle waves. Is there > any > > other object like metro, for doing this job? > > # Thanks! > > -ugur guney- > > > _______________________________________________ > > PD-list(a)iem.at mailing list > > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > >

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Re: [PD] pdp on mac OSX 4.6
by bigswift＠cox.net 14 Jun '06

14 Jun '06

i just wanted to mention that some files MADE with pdp opened fine on os X 10.4.6 until the quicktime 7.1 update . Apple did something and now certain files with jpeg codec will not open at all. ---- derek holzer <derek(a)x-i.net> wrote: > Hi xname, > > xname(a)scii.nl wrote: > > > i am asking the list if is there anyone who installed pdp on macosx 4, > > and who has it working, which means not only that the library is > > loaded, but also that you can actually play videos so the xserver > > works. > > I got PDP to run with HC's 0.38.4-extended-RC8 installer. Sara Kolster > and I used the following instructions for several workshops: > > mv pdp_pidip_osx.tar.gz / > cd / > sudo tar xvfz pdp_pidip_osx.tar.gz > cd /usr/local/lib/pd/pdp_pidip_osx > cp pdp.pd_darwin > /Applications/Pd-0.38.4-extended-RC8.app/Contents/Resources/extra/ > sudo cp /usr/local/lib/pd/pdp_pidip_osx/fonts/* /usr/X11R6/lib/X11/fonts/TTF > > The source of this pdp_pidip_osx.tar.gz was: > > http://tdegoyon.free.fr/pdp_pidip_osx.tar.gz > > I don't know if Yves has updated it since we downloaded it and kept an > archival copy. We also used the X11 installer from Apple. > > PDP runs and we can do all the direct video synthesis stuff with it. > However, I do have problems with Quicktime playback using this, as did > quite a few workshop participants. Our "reference" clips, encoded with > the PhotoJPEG codec, won't play for me. My guess is that the Apple's > Quicktime is to blame, but I haven't spent much time looking into it > since we dropped PDP from our workshops simply because it was so much > more complicated to get running than GEM, not to mention the > cross-platform issues. > > If video playback is what you are looking for, I can highly recommend > using GEM. Both [pix_film] and [pix_video] are much more reliable and > work with much less overhead than PDP does in general on OSX . I'm > afraid PDP is another one of those things in the PD world that is much > more highly developed for Linux, and also Tom has included a lot of > optimizations for Intel architecture in PDP that make me think that > running it on a (non-Intel) Mac isn't really the best deal anyway. For > example, Sara Kolster's OSX performance patches, which capture and mix a > live Firewire cam with prerecorded clips in a total of four buffers, > were all made in PDP first and redone later in GEM at less than half the > CPU cost. > > grtz to the ASCII crew! > d. > > -- > derek holzer ::: http://www.umatic.nl > ---Oblique Strategy # 83: > "How would someone else do it?" > > _______________________________________________ > PD-list(a)iem.at mailing list > UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list -- Patrick Pagano Digital Media Specialist University of Florida Digital Worlds Institute 352-294-2082

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Python random file [Was] Re: [PD] [PD-announce] more objects from libc: stat - get file info
by chris clepper 14 Jun '06

14 Jun '06

On 6/14/06, Tim Blechmann <TimBlechmann(a)gmx.net> wrote: > > would this python one-liner be an option for you? > > import random, glob > > def choose(path): > return random.choice(glob.glob(path+"/*.mov")) I hard coded the path so it looks like this: import random, glob def randy(): return random.choice(glob.glob("E:/pd_merge/past/*.mov")) The only problem is the output from the py object is print: symbol E:/pd_merge/past\\\\5.4.2006.9.49.4.mov What's up with the extra \\\\ ? Getting this working could solve a huge headache on Windows. Thanks cgc

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advice on loading 300 samples
by patrick 14 Jun '06

14 Jun '06

hi all, until now i was working with few samples, but for an electronic project that i have in mind and on the breadboard (using the multio of mamalala), i will need to load 300 mono samples and be able to play 6 at the same time. what is the best solution ? pat

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netreceive and port forwarding
by Andrea Fiore 14 Jun '06

14 Jun '06

Hi all, PD+ssh PROBLEM: I am trying to send open a socket with PD from a python script that uses the module pdsend.py and that is hosted on a remote server. I access the remote server and launch the script using an ssh connection (ssh client version is OpenSSH_4.3p2, OpenSSL 0.9.7i 14 Oct 2005). The problem is that I am in a situation that or I am not able to create the *netreceive* object after I opened the connection with that localhost port forwarded, or I am not able to forward the localhost port via ssh if the object already exists and is allready listening on that port. I have to say that I am not really familiar port forwarding so probably I am not using ssh prorply example 1: # ssh remote_S with forwared port 3000 on the local machine and # port 8888 on the remote machine. -g allows to forward from the # ssh server to the ssh client $ssh -g -L3000:localhost:8888 andrea@remote_S #from pd "netreceive 3000" ... couldn't create example2 # on PD netreceive 3000 #created $ssh -g -L3000:localhost:8888 andrea@remote_S channel_setup_fwd_listener: cannot listen to port: 3000 Could not request local forwarding. I also tried other solutions like the amazing iemxmlrpc object... Anyway, they are also based on sockets, so I experienced the same problems! Thank you in advance, Andrea

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[PD-announce] more objects from libc: stat - get file info
by Hans-Christoph Steiner 14 Jun '06

14 Jun '06

http://at.or.at/hans/pd/objects.html Another libc port: stat. It lets you get all sorts of data from a file. Quite handy for a number of things, like testing what kind of file something is, or get the time of the last access, status change, or modification. Should work on all platforms. Also included is [file_type] object which is written in Pd and uses [stat]. It tells you what kind of file something is (file, folder, character, block, fifo, etc). Of course, it'll be in the next Pd-extended test release. .hc ------------------------------------------------------------------------ Computer science is no more related to the computer than astronomy is related to the telescope. -Edsger Dykstra _______________________________________________ PD-announce mailing list PD-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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GridFlow configure can't find Gem src
by paris＠parisgraphics.com 14 Jun '06

14 Jun '06

Hello List, I am trying to compile GridFlow on linux. When I run configure, most of the output looks good but I get this: [puredata] Miller Puckette's Pure Data: --------------------------------------> found [gem09] PureData GEM (source code) with m_holdname: --------------------------> missing (gcc compilation error) [gem08] PureData GEM (source code) without m_holdname: -----------------------> missing (gcc compilation error) So it seems that Gem isn't being found. I changed line 87 of the configure script to point to where I have Gem src from CVS: :GEM_SOURCE => "/home/paris/src/gem/Gem/src", But I still get the message that it isn't found. Any advice? Thanks, paris

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comport on windows
by martinrp＠alcor.concordia.ca 14 Jun '06

14 Jun '06

I was trying to compile comport from cvs today and I noticed that it crashes pd when you close the port, so I looked into the code and found that the memcpy calls have the source and destination backwards, and the memset size and destination were reversed. Now closing a com port doesn't crash pd. I'm wondering if the version I got from anonymous cvs yesterday (in externals/iem/comport) is really the latest version... Martin --

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how to trigger bang's with a period less than 1 milisecond
by sokratesla 13 Jun '06

13 Jun '06

# Hi everybody! # I was fiddling with the "metro" object and realized that it can not take a number less than 1 as the second argument. So, I will trigger a vline~ objects with the output of the metro to produce triangle waves. Is there any other object like metro, for doing this job? # Thanks! -ugur guney-

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Pd-list June 2006