Pd-list June 2012

pd-list@lists.iem.at

107 participants
113 discussions

Pd-extended on the Raspberry Pi
by Marco Donnarumma 12 Oct '12

12 Oct '12

That's great! thanks for sharing, and keep us updated. M > After much tribulation, I managed to build Pd-extended on the RPi: > > http://log.liminastudio.com/writing/tutorials/how-to-build-pd-extended-on-t… > > I'm getting some noise, possibly due to the beta alsa driver, but I'm > looking into it... > > ?t3db0t > -- Marco Donnarumma New Media + Sonic Arts Practitioner, Performer, Teacher, Director. ACE, Sound Design MSc by Research (ongoing) The University of Edinburgh, UK ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Portfolio: http://marcodonnarumma.com Research: http://res.marcodonnarumma.com | http://www.thesaddj.com | http://www.flxer.net Director: http://www.liveperformersmeeting.net

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Re: [PD] ipoke~ ?
by katja 19 Jul '12

19 Jul '12

On Sat, Jun 16, 2012 at 5:01 PM, Matt Barber <brbrofsvl(a)gmail.com> wrote: > The user-settable bound would just be in how they decided to use it. > Think of it like [until] -- there's no reason to make the user set an > upper iteration bound - the user does that just by using it in a way > that doesn't crash Pd (and some until loops are more expensive than > others). Maybe you're right. Though [tabwrite4~] would be more complicated to handle than [until], user-tests will indicate wether a 'safety belt' would be desired, it is not a prerequisite for the object's functioning. > The main thing I see wrong with what we've been calling "approach B" > is that there isn't a good policy for what to do when 1) the index > goes backwards in the table, and 2) what to do when the table already > has info in it. One could have settable "interpolate on backwards > jump" (default should probably be no) and settable "mix new samples > with what's there, or overwrite them." When the index goes backwards in the table, the object should write backwards, like [poke~] does. In my view, the object should always overwrite samples, like [poke~] again. I did my sound-on-sound looper with [poke~] and [tabread4~], a mix can be done externally. (see http://puredata.hurleur.com/sujet-5021-sound-sound-looper-clear-option). > Now, if we move forward, we need think about what to name it. > [tabwrite~] currently does something that maybe should have been > called [tabrecord~], so the [tabwrite4~] name is maybe a little > misleading. The delay version could be called [vdw~] -- it would take > two signals in and output one signal (there's no reason for it to > maintain a multitap-able delay buffer because all the relevant work is > done on the write end, so if you need multiple read taps you can just > feed it into a [delwrite~] further down). I like the name [tabwrite4~]. Every Pd user is (or will be) familiar with [tabwrite~] already, and [tabwrite4~] will be used in combination with [tabread4~], nothing could be more logical. > For various reasons I think what we've been calling approach A -- > writing a filter kernel into the buffer for every sample is better for > the delay version than approach B, but I can't get into it right now > as I'm about to board a plane! > > Matt I'm about to leave for a 3 week holiday, computers will stay home! (I'm almost tempted to smuggle one in my luggage and write the class in my tent, Pd addict I am). Katja

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Reading a specific image from [pix_buffer] and saving it using [pix_write]
by Antonio Roberts 16 Jul '12

16 Jul '12

I've been attempting to build on the stop-motion animation patch that guido built some time ago (attached). I want to output each new frame to an image but there's one problem: [pix_write] reads what is currently in the frame buffer, which could be one of the old pictures. Is there any way to make it read from a specific point in the frame buffer? Antonio -- ============================ antonio(a)hellocatfood.com http://www.hellocatfood.com ============================

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sending band/float/symbol via network to pd-vanilla
by Sebastian Dorda 09 Jul '12

09 Jul '12

Hello, we try to integrate pd into a mobile game and plan to send data via int libpd_bang(const char *destination) int libpd_float(const char *destination, float value) int libpd_symbol(const char *destination, const char *symbol) Running libpd on the mobile and feeding data into it via these methods works great. For debugging purpose we want to be able to run a debug version of the game and a pd instance on a pc to see whats going on inside pd. Is it possible to trigger these methods using pd-vanilla via network? Like a "more global" netreceive. If not I thought about extending pd-vanilla and add a simple socket server too feed data into pd similar to the embedded version (libpd_bang...) Greetings Sebastian

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FTM for PD
by José Rafael Subía Valdez 05 Jul '12

05 Jul '12

Hello list has anyone compiled FTM for PD in mac OSX 10.6?? or is their a UB for installing, or maybe is their somewhere to find the compiled library??? thanx -- Lic. José Rafael Subía Valdez SoundArtist www.facebook.com/JRafaelSubiaValdez (Public Page) www.myspace.com/joserafaelsubiavaldez https://puredata.info/author/rafasubia www.redce.org

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Miller in Melbourne (and Brisbane?)
by Chris McCormick 02 Jul '12

02 Jul '12

Hey all! I don't think I saw this posted yet: Miller will be at the Melbourne patching circle Sat July 7th, 2pm to 8pm. Miller, is there anywhere we can find an itinerary of what you are up to? I think you will be at other events in Australia too, right? I read Brisbane somewhere. Wish I could be at one of the events but alas I am on the other side of the country. Cheers, Chris. -- http://mccormick.cx/

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NYC Patching Circle at 3rd Ward
by sonia yuditskaya 01 Jul '12

01 Jul '12

Patching circle has a new home! Come to Third Ward to 195 Morgan Ave Photo Studio B on July 16th, August 20th September 17th, October 15th from 7-10. Sofy Yuditskaya s~ <http://yuditskaya.com>

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quick fingerpinger port
by Tom Erbe 30 Jun '12

30 Jun '12

i just did a quick port of max & michael egger's fingerpinger to PD. this allows apple trackpads (under os x) to be used for multifinger control. source and external are here. if you want to improve this, you will need to compile with the MultitouchSupport framework. http://soundhack.henthorne.org/soft/fingerpinger_pd.zip tom - - - - - tom erbe ~ tre(a)ucsd.edu ~ studio director - computer music ~ ucsd department of music

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Data Structures - Scaling Visual Display - (1:10)(2:200)
by JF 30 Jun '12

30 Jun '12

I can't remember where I've seen it but you can create a struct like so... [struct structname float x(1:10)(2:200)] ...such that x displays more tightly or loosely and with boundaries depending on the values in the brackets. But I can't figure how to enter the values properly! My question is, how do you set the values in the brackets? What do they refer to?! Is there any documentation available on this? Thanks, John.

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speedlimit of data in Pd
by João Pais 29 Jun '12

29 Jun '12

Hello, I'm comparing the x mouse position to the position of scalars displayed in the screen - so that I have a sample player that plays the samples where/when my mouse is sitting over. Since [pointer] only allows for a [next( method - no "previous" or an extra X command to jump several pointers -, the easiest implementation to search for a match is to start from the beginning of the list, and going [next( until a match happens. This works out fine usually, until the limit of 160 pointers. After that, I get always the stack overflow error in the object doing the loop - in this case, a [t b p], but I guess it doesn't matter much. This is a kind of general problem: What is the "speedlimit of data" in Pd? How many operations can be done until a stack overflow occurs? That also happens when I try to automatically load the contents of a not-so-big [textfile] into an array with a click - unless I add a [del 1] to the loop. If the operation isn't in realtime, the problem can be circumvented, but anyway the issue is there. How is it possible to increase the "control rate" in Pd? I tried changing the sample rate from 44.1 to 48, but there was no (small) change. I thought that it was a factor of the audio rate. Is there a non-empirical way of knowing the limits of Pd, or of the system it's operating in? Is the latter that important in this equation? To solve my problem at hand, I could try an approach that tries to eliminate some of the comparison operations in the patch. But in the end there is still the loop between [next( and [pointer], and I imagine that it wouldn't make a big difference. System: Thinkpad x61, w7, pd-ext-0.43 Best, JoÃ£o

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Pd-list June 2012