Pd-list September 2013

pd-list@lists.iem.at

91 participants
121 discussions

gem:using lighting in a geo with shader
by Ronni Montoya 26 Sep '13

26 Sep '13

Hi, i discovered that lighting doesnt work in gem when i use a shader with a geo. Why is that? Any idea how can i make lighting work with a geo with shader? is there any trick? cheers R.

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openEXR in Gem
by Patrice Colet 25 Sep '13

25 Sep '13

Is it possible to read openEXR files with Gem? Colet Patrice

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[PD-announce] Biomediations, sound and body performance at TransitioMX, Mexico DF
by Marco Donnarumma 24 Sep '13

24 Sep '13

(sorry for x-post) 25th September Mexico City, h 17.00 Award ceremony + Biophysical music performance CENART, Centro Nacional de Las Artes ~~ Dear all, my latest private installation work "Nigredo" (made with Linux, the Xth Sense and Pd), created this February during a residency at STEIM with Marije Baalman and other collaborators, has been nominated for the TransitioMX award. http://marcodonnarumma.com/works/nigredo/ In occasion of the award ceremony, tomorrow 25th September at the CENART in Mexico City, I'll be performing a 30 minutes concert for biophysical music, combining my earliest Xth Sense composition "Music for Flesh II" with "Ominous", the very latest music piece recently committed by the European Conference of Promoters of New Music. If you're around, be sure to come for this exciting event, and also to visit the related exhibition with national and international artworks drawing upon this year's theme of "Biomediations",* *with Artistic Director Dra. Joanna Zylinska. Info: http://transitiomx.net/index.html hope to see some of you there, best wishes, -- Marco Donnarumma New Media + Sonic Arts Practitioner, Performer, Teacher, Director. Embodied Audio-Visual Interaction Research Team. Department of Computing, Goldsmiths University of London ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Portfolio: http://marcodonnarumma.com Research: http://res.marcodonnarumma.com Director: http://www.liveperformersmeeting.net _______________________________________________ Pd-announce mailing list Pd-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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Re: [PD] from poles/zeros to biquad coefficients - how to? (something like max's z-plane)
by Dan Wilcox 24 Sep '13

24 Sep '13

Checkout [e_beequad] & [u_lowpass], [u_highpass1], [u_bandpass], etc in rjlib The [u_lowpass] etc objects calculate the given coefficients for biquad from the desired frequency and bandwidth ... On Sep 24, 2013, at 3:48 AM, pd-list-request(a)iem.at wrote: > From: Alexandre Torres Porres <porres(a)gmail.com> > Subject: Re: [PD] from poles/zeros to biquad coefficients - how to? (something like max's z-plane) > Date: September 24, 2013 12:36:27 AM CDT > To: Funs Seelen <funsseelen(a)gmail.com> > Cc: pd-lista puredata <pd-list(a)iem.at> > > > for what i see, it's not some sort of straight formula, right? seems a bit more complicated than that. > > cheers -------- Dan Wilcox @danomatika danomatika.com robotcowboy.com

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from poles/zeros to biquad coefficients - how to? (something like max's z-plane)
by Alexandre Torres Porres 24 Sep '13

24 Sep '13

Hi there. So, I've been studying a lot about filters, and I'm doing this clone of max's z-plane in Pd. I hope anyone can help me guide where to find how to convert the values of the complex poles and zeros to biquad coefficients. I really needed that... Sorry if I missed it in Miller's book or some other obvious reference, I'm just really a newbie in filter design. Thanks Alex

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Re: [PD] [change] bug?
by Dan Wilcox 24 Sep '13

24 Sep '13

Ah but then if [change] used null by default, it wouldn't actually work by default ... that seems far worse then the reasonable default of 0. On Sep 23, 2013, at 10:19 PM, pd-list-request(a)iem.at wrote: > From: Mario Mey <mariomey(a)gmail.com> > Subject: Re: [PD] [change] bug? > Date: September 23, 2013 6:55:36 PM CDT > Cc: pd-list <pd-list(a)iem.at> > > > Well, if it is me... yes, I would like to have NULL as init value. -------- Dan Wilcox @danomatika danomatika.com robotcowboy.com

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Re: [PD] prevent opening of patches
by Marco Donnarumma 24 Sep '13

24 Sep '13

> > That's useful, but up until recently you had to create a second instance > of Pd from the command line anyway, since OSX would show you the instance > you already had if you tried to open it from the operating system. > > Or...have I missed the point? My friend and collaborator always needs two > Pd's, one for Gemnotes and one for audio processing, to play my > musioc...and we wrote a BASH script to launch the gemnotes one after the > audio one was set up. > > well, personally most times, when developing, I need to create abstractions and use global variables just to experiment with stuff. And if two instances of Pd are opened when you don't want it, it can be very annoying. Even worst scenario when you are teaching, student might open 4 patches at a time, and as 4 Pd instances are launched, and it's a mess. I always wondered whether we could have a flag in Pd GUI that set this kind of configuration. Like, "always open a new Pd instance", "always use one Pd only"... something like that. imho it would be useful. cheers, M

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Sum of delays...
by Mario Mey 24 Sep '13

24 Sep '13

I was guessing... if I made a sum of delays using so many send~ / receive~ and throw~ / catch~... For a full use of my patch (mic input -> FX-A -> FX-B -> output), I have this structure (inside subpatches and abstracts): adc~ s~ mic r~ mic s~ console-in-a r~ console-in-a s~ pre-fx-a r~ pre-fx-a throw~ post-fx-a catch~ post-fx-a s~ console-out-a r~ console-out-a s~ console-in-b r~ console-in-b s~ pre-fx-b r~ pre-fx-b throw~ post-fx-b catch~ post-fx-b s~ console-out-b r~ console-out-b s~ out r~ out dac~ Does every send~ / receive~ and throw~ / catch~ adds a 1 block delay? I'm using 48000, so, do I have 1.333ms * 10 = 13ms of delay because of using that objects?

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Cannot get [hid] to work properly with my mouse
by s p 24 Sep '13

24 Sep '13

Hi! I am trying to use [hid] on pd vanilla and Ubuntu. Ideally, I would like to use the mouse as a fader on Y axis : when I move the mouse, the fader moves accordingly, when the mouse doesn't move the fader stays in the same position. Problem is, I can get only relative Y, and relative Y seems to keep sending the value (1 or -1) from the last move, even if you don't move at all. So basically it is impossible to detect that the mouse is not moving. Is there a workaround this issue? Sebastien Piquemal

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alsa and jack on ARM/Wandbaord
by Chris Clepper 24 Sep '13

24 Sep '13

I've got a Wandboard* here for some testing and I can't get Alsa to work in duplex. Testing with arecord produces a soundfile and aplay plays it back. But starting Pd with Alsa or jack gives the dreaded errors about the resource being in use. Pd's performance with just playback is pretty good - pvoc example takes 20% cpu at 10ms latency - but I want to process some audio input! I built my own armhf kernel (much faster than armel) and have a very basic Ubuntu filesystem in place. There's no obvious process like pulseaudio grabbing the audio hardware either. Jack has all of the limits.conf set high. The audio device is sgtl5000 from Freescale. What's the usual setup and troubleshooting process for Pd on Linux these days? Seems like these things are mostly sorted on x86, so maybe the problem is driver or armhf related. Thanks! *Dual Cortex A9 box for $100: http://wandboard.org/

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Pd-list September 2013