Pd-list October 2007

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166 participants
302 discussions

[PD-announce] Ars Longa - Workshops of digital creation.
by eric genissel 05 Oct '07

05 Oct '07

Ars Longa organizes throughout the year of the workshops of numerical creation. Here workshops envisaged from October at December 2007. http://www.arslonga.info *Pure Dated, Sensors and Actuators 20 hour * This module proposes an initiation into the Pure use of the language Dated, finalized(worked out) by an artists' international community developers, at instigation of Miller Puckette (also at the origin of Max / MSP). The flexibility of this language (reduced to the writing of patchs graphs) allows to use him(it) in diverse situations where the real-time management of various types of stream (sound, image / video) is crucial. Date session: 22 to 25 / 10 http://www.arslonga.info/forma_pd.htm -- Eric Genissel Formations Association Ars Longa http://www.arslonga.info _______________________________________________ PD-announce mailing list PD-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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Re: [PD] Writing down a midi file in PD
by robbert van hulzen 04 Oct '07

04 Oct '07

you may know this already, but in the audio midi setup you can activate the iac bus, which you then can use to have pd and finale talk to each other. if you go this way, please keep us posted on whether finale indeed transcribes well this way! cheers, robbert > The only thing needed would be a virtual > midi connection from Pd to that sequencer.

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Rradical vs memento ?
by Olivier Revollat 04 Oct '07

04 Oct '07

I have tow directory "memento" and rradical" in my "extra/" directory ? It's a little bit confuse for me ? what is the difference between memento and rradical ? what should I use ? Thanks.

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[PD-announce] Introduction to Pure Data // SPACE media arts, London
by Jim Prevett 04 Oct '07

04 Oct '07

Introduction to Pure Data Tuesday, 6 November (1 day course) 10:30am to 4:30pm Instructor: Chun Lee Cost: £60 At [ s p a c e . m e d i a . a r t s ], 129-131 Mare Street, London E8 3RH **To book a place, email admin(a)spacestudios.org.uk** In this introductory course, participants will learn the basics of Pure Data from scratch on OSX (this knowledge can be transferred to any other operating system). Students will learn what Pure Data is, what it can do, and begin to build simple applications in "patches". Students will also learn to hack existing patches and use help patches to create applications. Places are limited to seven, where students will have their own Apple workstations, with an additional three places available to those who wish to bring their own laptops. More info at: http://www.spacemedia.org.uk Jim Prevett Emergent Technologies Producer [ s p a c e ] 129 -131 Mare Street London E8 3RH Direct: 0208 525 4339 Mobile: 07951 405466 Reception: 0208 525 4330 jim(a)spacestudios.org.uk www.spacemedia.org.uk www.spacestudios.org.uk _______________________________________________ PD-announce mailing list PD-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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Re: [PD] sfread4~
by ydegoyon＠free.fr 04 Oct '07

04 Oct '07

ola, cool, this seems to me very useful, could you also send a help patch to illustrate all the points you explain in this mail ? thx.. i also have to mention there was a sfread2~ in the moonlibs : http://www.moonix.freesurf.fr/ but they don't seem to be maintained anymore ( nor integrated in cvs and pd-extended ) sevy

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Trying to implement switch ramp
by Thomas O Fredericks 04 Oct '07

04 Oct '07

Hi, I am trying to implement the switch ramp that the list was talking about. Attached you will find the abstraction and a patch showing the bug. Why doesn't this work? Actually, it kind of works, but there is an annoying glitch (when you replace the lines with vlines inside mix.switch.ramp~ the clicking is even worse). Tom

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GEM source
by Jaime Oliver 04 Oct '07

04 Oct '07

Hello I am trying to find a .c file for the pix objects in GEM, i think it is something easy, but can't find them in extra/Gem, where i thought they would be, j -- Jaime E Oliver LR joliverl(a)ucsd.edu www.realidadvisual.org/jaimeoliver www-crca.ucsd.edu/ www.realidadvisual.org 9168 Regents Rd. Apt. G La Jolla, CA 92037 USA

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sfread4~
by Orm Finnendahl 04 Oct '07

04 Oct '07

Hi all, needing sfread~ with a signal inlet for varispeed and 4 point interpolation I reworked Günter Geigers object and renamed it to sfread4~ (hope you don't mind, Günter and thanks for the original code!). I didn't test it for negative speeds (it might get screwed up using it), but it seems to work fine for positive speeds. I found a couple of weirdnesses in the original code which seemed to make it sound a little distorted for speeds != integer multiples. Therefore I reorganized the perform routine and datastructs a little. It seems to be fixed now, but use at your own risk. The varispeed signal inlet is the leftmost inlet (therefore the third inlet doesn't exist anymore). Note that sfread4~ will not produce any sound if the inlet isn't connected to anything as this means a speed value of 0. To make it play back at original speed, connect a [sig~ 1] to the leftmost inlet. I also attach the compiled binary for linux i386. -- Orm

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PDCon07 peer review process
by Andrew Brouse 04 Oct '07

04 Oct '07

On 30-Sep-07, at 5:45 PM, pd-list-request(a)iem.at wrote: > yeh i think people understand me when i complain > about MB's spam, and also, about the fact that the pd > convention was MB convention > ( of course, when you're in the convention comittee > and that you worked previously > with all the curators out there ), This was brought to my attention and I feel I need to respond to it. I have no interest in getting involved in personal squabbles here. (I suggest you take such things 'out back': off-list.) I do, however, take very great exception with the imputation that the selection processes for PDCon07 artistic events or papers sessions were done in anything less than strict conformance with established international norms for such things. A couple of clarifications: Matthieu Bouchard was on the steering committee, not the executive, he did not have a say in final decisions which were made. Everyone who worked on PDCon07 worked extremely diligently for long hours over the period of a year. The amount of hours which I put in caused me some serious problems where I work and with my ongoing PhD thesis. Organising the papers sessions often felt like a completely thankless job and I had to question myself on a regular basis whether it was all worth it. To have it suggested flippantly - after all the blood, sweat and tears - that the selection process was somehow rigged or not fair is very distressing. It really hurts. I'm sure the other members of the executive feel the same way. At the end of the day, I justified it to myself this way: free and open-source tools like Pd are increasingly essential for musicians and artists to do their work. As someone who used to work in sculpture with wood, stone and steel, I know intimately that the quality of the work you do depends - amongst other factors - on having reliable tools. The same is true for computer music and media art. Commercial tools for computer music and media art are becoming increasingly expensive and unreliable at the same time. We need tools like Pd. At the same time it seems to me that Pd is at a crucial stage in its evolution and significant changes are happening. So, the papers sessions were seen as a way of enabling the important discussions which need to happen to go forward. I wanted to put the ideas proposed by the diverse members of the Pd community into a context of calm, respectful - yet vigourous - debate and discussion. I wanted to put the best ideas into the clear light; and let those ideas be seen and discussed based on their own merits. To enable this, the selection process had to be as fair and transparent as possible, and so it was. As I had nothing to do with the artistic selection process I cannot comment on that. I was, however, the papers chair and did manage that process so I will outline to you exactly how the decisions were made: 0. Calls for papers were made and 44 submissions were made via the web interface. 1. Suggestions for potential peer reviewers were requested from within the local Pd community. 2. A list of potential reviewers was compiled and invitations were made. 3. Slightly less than half of those invited did accept. 4. Submissions were assigned to reviewers with at least 3 reviewers per paper. (there was one exception to this as one of our reviewers bailed out at the last minute, this particular case was brought to the executive for discussion and the paper was in fact accepted) 5. Reviews were compiled and a cut-off score was decided (4.0 of a possible 6.0). All papers above this threshold were accepted. (Note: Matthieu Bouchard was listed as principle or secondary author on 4 submissions, 3 of which were accepted, all with a score of 4.0 or higher.) 6. A small number of papers below this threshold which broached subjects judged to be important to the Pd community.were accepted for reasons of universal interest and thematic consistency. A total of 26 papers were finally accepted. 7. The authors were informed of the results and comments from the reviewers were passed on. 8. Most authors re-submitted revised versions of their papers taking into account the comments of the reviewers. 9. Most authors did come and present at PDCon with a small number unable to attend due to financial or other issues. Anyone who has any questions, issues or complaints about the papers review process for PDCon07, please contact me directly at: pdcon.papers(a)gmail.com Anyone who has any questions, issues or complaints about the artistic review process for PDCon07, please contact Marc Fournel directly at: fournel.marc(a)gmail.com Thanks once again to all who participated in PDCon07 and especially to those who submitted papers presented at PDCon and helped so greatly by reading and reviewing submissions for us. best regards, Andrew Brouse Louvain-la-Neuve, Belgium ===== Andrew Brouse PDCon07 Papers Chair pdcon.papers(a)gmail.com http://pure-data.ca/

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Re: [PD] Music made with Pd...
by Collin Oldham 04 Oct '07

04 Oct '07

Thanks for you interest Andy! I must say, I appreciate all the work that you have shared; it's been helpful to me in learning Pd. The rubber band sound is a 3 dimensional physical model of a rubber band that I made in matlab and ported to Pd. No, I'm just kidding, of course you are right, it is a variable delay! That's a comb filter (that Derek Holzer posted to the list a couple of years ago, as I was getting started with this stuff) with a lop~ added to the feedback loop. The input to the comb is a piezo pickup, which is mounted to a shaker, which creates a second feedback loop. So the action of the controller is integral to the sound synthesis, which is why it is hard to tease out what is Pd and what is the controller. However, without Pd running, the controllers can only make little scrapes and crackles, really. The principle behind the r.t.k. is this: the capacitance of 2 parallel plates is proportional to their surface area, and inversely proportional to the distance between them. (now I'm not kidding!) The tape knife constitutes one of the plates of the capacitor, and there is an array of receiving antennas behind the playing surface that constitutes the other. This array is laid out in such a way that you can calculate the position of the tape knife based on their relative capacitances. A very clever system for which I can take no credit. See Max Mathews' Radio Baton. foamboil- real water, coffee cup, drinking straw, microphone. I wrote this to a table at 96,000 samples/second, so I could read it back really slowly. Delay based panning only, which I think gives it sort of a unreal sense of space. As to which parts of my work use Pd, well it is pretty central! I use [comport] to connect the microcontrollers to my laptop, all the sensor data is conditioned and mapped in Pd to control parameters of sounds that either originate in Pd or are processed by Pd. You can browse the patches I'm using tomorrow, if you care to (dirty laundry included) here and any comments would of course be very welcome: http://idisk.mac.com/coldham-Public (foam/stone.pd is the top patch.) yours truly, Collin Oldham http://homepage.mac.com/coldham/klang

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Pd-list October 2007