Pd-list May 2007

pd-list@lists.iem.at

160 participants
312 discussions

basic questions
by cristiano figueirÿfffff3 17 May '07

17 May '07

Hi all! I'm new to pd and have 2 basic questions: 1) I understand the concept of "abstraction", but when i use them in my patchs they don't work. Even with abstraction and patch saved into the same directory...what i'm missing? 2) In sampling with "soundfiler" object, i cannot acess my samples, even adressing their directories in "startup" and "paths", what's missing? thanks Cristiano. __________________________________________________ Fale com seus amigos de graÃ§a com o novo Yahoo! Messenger http://br.messenger.yahoo.com/

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best way to wrap opencv library for noob
by nosehair911＠bellsouth.net 17 May '07

17 May '07

I am trying to get an FTIR setup going and I need a good motion tracker for os 10.4.9. I cant get gridflow to compile, I love the pix_multiblob but its way to cpu hungry so I decided to write my own. I have never programed in C nor have I ever read any manuals but I'm willing to try. My question is do I need to know C before hand or can I get away with reading this: http://iem.at/pd/externals-HOWTO/ BTW I am not starting from scratch, if that were so I would never try this. I am trying to go the opencv route and wrap these for Pd: http://opencvlibrary.sourceforge.net/cvBlobsLib Anothe question is would it be easier to try to write it as a standalone external or as part of Gem like a pix_cvBlobs object? Where can I find information on developing for Gem like the externals how-to? Thanks, Alain

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problem loading adaptive filter libraray
by tania habib 17 May '07

17 May '07

Hello, I have started working with PD few weeks ago and I find it very useful for my work, but I am facing some problems in trying to load some libraries into PD. I want to add the Adaptive Filter library written by Markus Noisternig and Thomas Musil. I am working on Mac osx. Please help me out with this problem regards, tania

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colour (color) tracking
by Sion Dalais 17 May '07

17 May '07

hi, i am trying to make a multi colour (color!) tracker that sees red and blue seperately. to get my head round it i thought i would just start by making a single colour tracker that i could manually switch between red and blue. i'm using the movement detection patch that came in the pd browser and trying to work with pix_blob. but even when i put red mode in and weight it to red it still seems to be quite happy to track any colour/movement at all. any help or tips would be really helpful. thanks, sion. ___________________________________________________________ Yahoo! Mail is the world's favourite email. Don't settle for less, sign up for your free account today http://uk.rd.yahoo.com/evt=44106/*http://uk.docs.yahoo.com/mail/winter07.ht…

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Re: [PD] Looping samples with tabread4~
by Matteo Sisti Sette 17 May '07

17 May '07

Frank Barknecht wrote: >> 4. Simply using a vline~ object and ?loop it? with a different >> start position the second time onwards. >I'd simply do 4). That's ok if you're not gonna change the pitch while playing the sample. Suppose for a moment that you don't need a sample start point different from the loop start point, i.e. the begin and end point don't change from the first to the second time. The phasor solution (which is trivial in this case) allows you to have a signal as an input to the phasor, thus allowing to change the pitch of the sampler in real time and smoothly. This is not possible (afaics) with the vline~ solution. I would like to find a solution that mantain that possibility but does switch to the loop region after reproducing the correct sample portion the first time. Obviously I don't know if Mikael Gunner, who posted the original message, wanted this :) One solution for reproducing a sample with a signal pitch input without using a phasor is: (input pitch ~) | [rpole 1] | [tabread4~] (sending a [clear( to the rpole when starting playing) However, the only way I can think of in order to switch from this to the phasor (or to jump to a given point of the sample) at the correct time independently of pitch history, is to use a [threshold~]; but that wouldn't be accurate because it's block-quantized. Any other idea? Hey!!! I just had one. But I would like anybody to suggest a simpler or more elegant one. I may use 2 phasors (or an rpole and a phasor), both fed with the same pitch input. Let's suppose this is the sample: |-----SS-----LB-----LE------| where: SS= sample start (where we want the sample to start playing the first time) LB= loop begin LE= loop end With appropriate calculations, the two phasors can be adjusted so that: 1) Phasor A reproduces the sample the first time from SS to LE in its first cycle. In subsequent cycles it would do the same but it will be muted so we don't mind. 2) Phasor B reproduces the loop region; its initial phase is calculated in such a way that at the beginning, when it is muted, it will be producing garbage, but when phasor A will reach point LB for the first time, phasor B will also be on LB, so that, during ONE cycle of phasor B, the two phasors will be reproducing *exactly* the same portion LB-LE synchronously. So, at any moment of that cycle, we can (and we must) safely switch from the output of phasor A to that of phasor B; we don't need to do a crossfade because the two outputs are perfectly identical. So, for detecting when to switch, we can use a [threshold~] on LB on the output of phasor A, even if threshold is block quantized. No matter if the actual switching occurs with a delay of almost one block, it will still be safe to switch. There is a limitation, that is a minimum loop region size: if B is the block size (usually 64) and P is the maximum pitch we are willing to allow (where a pitch of 1 means original speed, 2 means twice the original speed etc), the loop region must be at least B*P..... this formula may be wrong but however there is a minimum loop size related to the block size. I guess this is rarely an issue. Any simpler idea? Bye m. -- Email.it, the professional e-mail, gratis per te: http://www.email.it/f Sponsor: La Cronaca del Carnevale di Ivrea 2007 visto su www.localport.it: per conoscere il Carnevale, per rivivere lÂedizione 2007. Acquistalo on line Clicca qui: http://adv.email.it/cgi-bin/foclick.cgi?mid=6430&d=17-5

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pix_fiducialtrack
by punchik punchik 17 May '07

17 May '07

hi which is the benefit of using this object instead of the reactivision standalone application? my last question is: ive read at the pix_fiducialtack help file that this tracking system is copyrighted ... is there any problem is i use this for comercial purposes? thanks o. ____________________________________________________________________________________ Park yourself in front of a world of choices in alternative vehicles. Visit the Yahoo! Auto Green Center. http://autos.yahoo.com/green_center/

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fixing distortion on surface
by punchik punchik 17 May '07

17 May '07

hi is there any way of fixing the distorion i get when i project gem visuals in curved or irregular surfaces? is there any trick? thanks pun ____________________________________________________________________________________Be a better Heartthrob. Get better relationship answers from someone who knows. Yahoo! Answers - Check it out. http://answers.yahoo.com/dir/?link=list&sid=396545433

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what is compiling?
by ariel b 17 May '07

17 May '07

respectful list i come from the max msp world and i have listen alot the words like compiling, porting, etc, words that i'm not used to use so now i ask there is any paper, tutorial etc, around there that explain what its compiling and how to do that specifically to compile a source code around there (wii remote) everything in mac 10.4 thanks

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Fwd: pda_gumstix.tar
by alejo d 17 May '07

17 May '07

i just had the chance to finally testy port of puredata for the PDA called pda by gunter geiger, i can report that the gumstix connex 400mhz using a gpstix reports that i manage to make a god port: # ./pd_ok -nogui -nomidi -verbose Pd version 0.37.4 compiled 23:12:25 Apr 23 2007 opened 0 MIDI input device(s) and 0 MIDI output device(s). input channels = 2, output channels = 2 opened /dev/dsp for reading and writing opened audio output on /dev/dsp; got 2 channels bytes per sample = 2 setting nfrags = 8, fragsize 1024 audiobuffer set to 50 msec OSS: requested audio buffer size 8816 limited to 8192 opened audio input device /dev/dsp; got 2 channels bytes per sample = 2 OSS: issuing first ADC 'read' ... ...done. the bin is attached in case anyone want to help me test it. /a ---------- Forwarded message ---------- From: alejo d <alejoduque(a)gmail.com> Date: May 15, 2007 8:39 PM Subject: pda_gumstix.tar To: alejo d <alejoduque(a)gmail.com> pda_gumstix.tar

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Re: [PD] pdp quicktime support
by nosehair911＠bellsouth.net 17 May '07

17 May '07

Thanks. I'll give it a go. According to Hans if you use the Pd extended you should not need FINK for pdp or pidip because he included all the necessary dylibs within Pd. If you look in the app contents/ lib there are all the libs that all the externals should be using. Last time I asked if I needed FINK to run pdp on Pd extended I got a big NO from h.c. But if this is the only way for now I guess I'll just go that route. The ploblem is if I go to a computer that doesnt have FINK installed then my patches wont work. Alain > > From: "Pagano, Patrick" <pat(a)digitalworlds.ufl.edu> > Date: 2007/05/15 Tue PM 10:30:36 EDT > To: <nosehair911(a)bellsouth.net>, > <pd-list(a)iem.at> > Subject: RE: RE: [PD] pdp quicktime support > > okay hopefully this will help > btw have you installed FINK? > > if not you have to install fink. > > these files go in /sw/lib > > NOT in /sw/lib/libquicktime > > good luck and let me know how you make out > > pp > > > > -----Original Message----- > From: nosehair911(a)bellsouth.net [mailto:nosehair911@bellsouth.net] > Sent: Tue 5/15/2007 4:21 PM > To: Pagano, Patrick; pd-list(a)iem.at > Subject: Re: RE: [PD] pdp quicktime support > > I tried replacing the libquicktime.0.dylib with the one from the pidip .zip but it still wont recognize jpec > codec or any other codec. If you can help I would apreciate it. > Alain > > > > From: "Pagano, Patrick" <pat(a)digitalworlds.ufl.edu> > > Date: 2007/05/15 Tue PM 03:47:28 EDT > > To: <nosehair911(a)bellsouth.net>, > > <pd-list(a)iem.at> > > Subject: RE: [PD] pdp quicktime support > > > > JPEG CODEC > > > > And again, after install replace the libquicktime.dylib from sevvy's > > release wity the one you have now > > Make sure you back em up etc. > > I will send you my working dylib for you to try tonight if you do not > > succeed > > > > pp > > > > > > -----Original Message----- > > From: pd-list-bounces(a)iem.at [mailto:pd-list-bounces@iem.at] On Behalf > > Of nosehair911(a)bellsouth.net > > Sent: Tuesday, May 15, 2007 2:26 PM > > To: pd-list(a)iem.at > > Subject: [PD] pdp quicktime support > > > > I have tried the most recent version of Pd extended for os x on a ppc > > from the autobuilds and it looks like pdp_qt and pdp_yqt still give the > > unsupported video codec error. I have tried with different codecs but I > > still get the error. Does someone know of a particular one that has > > worked? This build loaded up pdp and pidip which I have not got to load > > up before so things are looking good. > > Thanks, > > Alain > > > > > > _______________________________________________ > > PD-list(a)iem.at mailing list > > UNSUBSCRIBE and account-management -> > > http://lists.puredata.info/listinfo/pd-list > > > > > > >

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Pd-list May 2007