Pd-list April 2005

pd-list@lists.iem.at

141 participants
255 discussions

writing a word
by Max Neupert 03 Apr '05

03 Apr '05

hi list, what i want to do is to just write a word. i would very much appreciate if someone could bring me on the right track. -- Max Neupert Fachgebiet Kunst & Medien Hochschule für Kunst und Design Burg Giebichenstein Halle, Deutschland http://kunstundmedien.burg-halle.de

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Advice: best way to do matrix-rotation in PD
by B. Bogart 03 Apr '05

03 Apr '05

Hey all, I've been working with a Gem abstraction called "supercube". Supercube is a cube of 3x3 curve3d planes. The common points are linked so that we always have a seamless volume. The supercube has 27 unique points. I've been figuring out different ways of creating interesting forms using this structure. So I had the great idea of using matrix rotation to rotate the control points on various axes to distort the cube. In order to get this to work I need to solve two problems: A. I need to be able to do matrix-rotation fast and efficiently, and I'd rather not need an external to do it! B. I need to query the current position of each point before I can rotate it. For A I could: 1. use expr and manually patch the calculation 2. write an external (please no?!) 3. write a python script to do the calculation and load with "py" What give me the best performance? (#2) What would benifit the user community most? What is the most performance for the time? For B: 1. data-stuctures with/out the graphics part (fast enough?) 2. keep track of points in a python array.. "py" 3. keep track using zexy array or iemmatrix or some external... 4. use [f] objects... YUCK! Any suggestions/advice would be apprecaited. Thanks. B.

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[FIR~] , [equalizer] and [biquad~] ... can i make [equalizer] and [biquad~] act like [FIR~] ?
by andy graybeal 03 Apr '05

03 Apr '05

hey folks, With [FIR~] you can draw in a graph to make the eq the way you want it. I don't understand [FIR~], but it does neat sounding things. I'm wondering if I can draw inside of a graph and control [equalizer] which eventually controls [biquad~] (because there is no way i'm capable of understanding [biquad~] at this point in time) just like the way [FIR~] works? some of you may think, why don't i just use [FIR~] .... well [FIR~] seems to sound a lot different than [equalizer] & [biquad~]. it seems to have some kind of phasing in it for one. i also haven't figured out how to get it to 'cut' when i go 'negative' into the graph.. it seems to not get any quiter, but louder. i know i'm not understanding how it works. the only way i can get a graph readout of what [equalizer] and [biquad~] do now is if i use filtergraph.pd (i forget who wrote it).. but it sweeps from 20Hz to 20kHz.. and outputs a response into a graph from that. this is awesome!! accept it takes a while, and i imagine it's not the most cpu friendly thing. -andy

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best linux system for using Pd just now
by julien.breval＠tremplin-utc.net 03 Apr '05

03 Apr '05

Hello I have been using Pd on Red Hat 9 / Planet CCRMA for over one year with great satisfaction. Some info, kernel = 2.4.11 low latency, sound card = hdsp multiface, pd version = 0.37. Recently, for some crash reason I had to make a complete new installation of linux. As I didn't have much time, I used a ubuntu-linux installation cd that someone gave me (hopefully) some days before. Now I have to use Pd again but I can't get it work on this new system. The first thing I need is to have the (hdsp) sound. I tried to install the latest stable alsa driver but the ./configure script says "unsupported soundcard hdsp", which of course doesn't look normal. Maybe the best solution for me is to install a low latency kernel that includes a correct alsa driver. Will the planet CCRMA kernel work with ubuntu-linux ? or should I install RH9 again instead ? Are there other kernels for this ? The thing is that I don't have a lot of time to spend on this. I can install another kernel, possibly another linux distribution, like RH9 (I have the CDs) -- but definitely not build an audio-specific gentoo linux, for example. After I have a low latency alsa kernel, I can install the hdsploader program and everything should work. Last thing : I currently have pd-0.38 (original version) installed on this machine. When I type "pd -jack", I get a message telling me that this flag doesn't exist. So I tried to install pd-devel_0_38, but ./configures says that there is no Tcl header on my machine, though tcl/tk is clearly installed ... So if anyone has a quick solution for running Pd as soon as possible, it will be truly appreciated best regards, -j

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Re: could not open alsa sequencer
by Chris McCormick 03 Apr '05

03 Apr '05

On Sat, Apr 02, 2005 at 08:01:01PM +0200, pd-list-request(a)iem.at wrote: > Message: 6 > Date: Sat, 2 Apr 2005 15:57:51 +0100 > From: Ben Dembroski <info(a)arthacking.org> > To: pd-list(a)iem.at > Organization: www.arthacking.org > Subject: [PD] could not open alsa sequencer > > For what it's worth, I had an Unbuntu Warty install on the same box about a month ago with no problems. I do believe the version of PD was .37 on that install. Unbuntu was nice, but I like the choice of packages that sid is giving me, so I would like to try to get this setup going. Hi, I was under the impression that you could just put sid apt sources in /etc/apt/sources.list. Or include the 'universe' repository? Best, Chris. ------------------- chris(a)mccormick.cx http://mccormick.cx

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Re: [PD] PD this Sunday?
by Matthew Alford 03 Apr '05

03 Apr '05

I dont know if it's been posted to the list yet but here's the info about PD and Share this Sunday. -m ----- Forwarded message from news(a)harvestworks.org ----- Date: Wed, 30 Mar 2005 16:46:06 -0500 From: Harvestworks News <news(a)harvestworks.org> Reply-To: info(a)harvestworks.org Subject: [share] Share at Harvestworks April 3rd To: matt(a)friendlycommunity.net >From Keiko Uenishi, aka oblaat: we'll be in Soho this week! 'share' will be hosted by the amazing long-running digital media arts organization, harvestworks!! Sunday, April 3rd @Harvestworks 6:30 p.m. - midnight_ish 596 Broadway #602 (between Houston & Prince - Soho), NYC 212-431-1130 http://harvestworks.org "Founded in 1977 to cultivate artistic talent using electronic technologies, Harvestworks' mission is to encourage the creation and expand the dissemination of digital media artwork. From its central SOHO location and through its Internet presence Harvestworks provides accessible and coordinated digital media production, education, information and content distribution services to a diverse creative community that includes electronic music composers, interactive media designers, film and video makers, digital tool developers and computer programmers. By bringing together innovative practitioners from all branches of the digital arts, Harvestworks provides a vital context and catalyst for creativity in the digital arts. ..." Featured on April 3rd! Pure Data free workshop (early hours 2 hours starting 6:30!) + meet-up http://puredata.org/ http://crca.ucsd.edu/~msp/ this week, a semi-impromptu self organizing Pure Data meetup. We will be discussing anything and everything Pure Data related. Max/MSP users who are curious about PD but havent played around are welcome. Install fest, patching tips, programming techniques, PDP, Gem! "PD (aka Pure Data) is a real-time graphical programming environment for audio, video, and graphical processing. It is the third major branch of the family of patcher programming languages known as Max (Max/FTS, ISPW Max, Max/MSP, jMax, etc.) originally developed by Miller Puckette and company at IRCAM. The core of Pd is written and maintained by Miller Puckette and includes the work of many developers, making the whole package very much a community effort. Pd was created to explore ideas of how to further refine the Max paradigm with the core ideas of allowing data to be treated in a more open-ended way and opening it up to applications outside of audio and MIDI, such as graphics and video.... Pd is free software and can be downloaded either as an OS-specific package, source package, or directly from CVS. Pd was written to be multi-platform and therefore is quite portable; versions exist for Win32, IRIX, GNU/Linux, BSD, and MacOS X running on anything from a PocketPC to an old Mac to a brand new PC. It is possible to write externals and patches that work with Max/MSP and Pd using flext and cyclone." ---- and as always, openjam is happening after the featured workshop (latter part will include jamming with PD people). please come with your instruments, equipment, and/or simply yourself to join in &/or hang out! All styles of audio &/or visuals are welcome!! with all kinds of instruments/equipments you'd bring in _______________________________________________________________________ Harvestworks is a nonprofit Digital Media Arts Center that provides resources for artists to learn digital tools and exhibit experimental work created with digital technologies. Our programs are made possible with funds from mediaThe foundation, New York State Council on the Arts, the National Endowment for the Arts, the NYC Dept. of Cultural Affairs, Materials for the Arts, The Experimental TV Center, the Mary Flagler Cary Trust, the Aaron Copland Fund, The Greenwall Foundation, the Jerome Foundation, Foundation for Contemporary Performance Arts, JP Morgan Chase Foundation and the Rodney White Foundation. _______________________________________________________________________ HARVESTWORKS Digital Media Arts Center 596 Broadway, Suite 602 (at Houston St) New York, NY 10012 Tel: 212-431-1130 http://www.harvestworks.org mailto:info@harvestworks.org Subway: F/V Broadway/Lafayette, 6 Bleeker, W/R Prince _______________________________________________________________________ To be removed from this list, hit reply with REMOVE in the subject. Please allow one to two weeks to process! ----- End forwarded message -----

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Win 2000 pix_video
by Ian Smith-Heisters 03 Apr '05

03 Apr '05

Hi all, I posted earlier this week about trying to capture using a Matrox X100 capture card with Gem 0.90.1 and Windows 2000. I've figured out that it sort of works using the analog input to the capture card. However, when I open the gemwin (I don't even have to start rendering) PD slows down to the point where it takes as much as a minute to repond to my input. The CPU load meter jumps up to above 600, and in about 5 minutes PD crashes without a message. I've used GEM (.87, w/ pd 0.36) with a video input on this computer before with no problems, so this is odd. It has dual P4 3.0 GHz processors, so it shouldn't have a problem there--this patch runs smoothly on a single P4 3.2G. The video card is a Radeon 9800, so /that/ shouldn't be a problem.. Any ideas what could be causing this, or what I could do to fix it? Thanks, Ian -- http://www.0x09.com

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Request for Submissions: Interface Archive
by vze26m98 03 Apr '05

03 Apr '05

Hi all- (Forgive the cross-postings; forward if you'd like...) I'm throwing out a request to address something I find missing on the Internet, which is the answer to "what do we stare at all day (and night) long?" Working in media, it seems we spent a good deal of our time building ways to expressively control machines, or working with open-ended software environments, or abusing the control metaphors of shrink-wrap applications. But there isn't any place to go to get a sense of the range of current interface building activity for media. Much of what can be found is dispersed, and categorically coalesces around "finshed products" or simple tutorial examples. I'm asking that you send me documentation of your user-interfaces so that I can build a publicly accessible archive to address this lack. Submissions will be accepted and published without aesthetic judgement. In fact, I'm hoping that the "one-off" interfaces so easy to produce now, the abandoned works, or the messes that you don't have the energy to clean up will find their way to me. These are the kinds of artifacts that will be hopelessly lost to future generations. :( Your images can depict working, non-working or imaginary ways to expressively control time-based and interactive media. You must be the author of your submission. It must be your expression. You must have created it somehow. I'm aware that data-bending is often the mis-use of non-authored work, but perhaps the benders will have some ideas about how to get their activities across. Coders and command-line types will have these issues as well. Please send me your screen-shots, digital photos of hardware, scans of pencil sketches, or whatever, along with your name, email address and (hopefully) a brief description of what your submission(s) is/are about. I will publish everything I receive. I will likely, although I don't have any pre-conceptions, establish some (potentially changing) means of categorizing the submissions in order to faciltitate access to what I hope will be a large body of work. In sending in your submission, you retain all copyrights to your work. You are giving me non-exclusive permission to display your submission on my web-site <www.propheticdesire.com> for non-commercial, archival purposes. Your email address will be displayed in some manner not easily harvested. Submissions will be dated by the date they are received. Please send your submissions to: <gui(a)propheticdesire.com> As I will be traveling the first part of May, realistically it will be the end of May before submmissions begin to be published. As this will be an on-going effort, there are no deadlines or limits on the number of submissions. Thanks for your attention, and hopefully we can create a unique view of creative computer-based media authorship. Best, Charles Turner (Tad) (vze26m98) (vatic) <vze26m98(a)optonline.net>

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[biquad~] and [equalizer] and unity?
by andy graybeal 02 Apr '05

02 Apr '05

i'm using [equalizer] as the interface to [biquad~] .... i'm wondering, what is the 'unity' gain and 'unity' bandwidth for this? i hope that makes sense. -andy

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Impulse Response - Convolution Reverb
by Davide Morelli 02 Apr '05

02 Apr '05

I would like to try to code an IR reverb in PD to get full control over the Impulse (and modify it realtime). I have studied everything I could find on convolution and FFT, now I am wondering how to apply it to a continous flux of data.. Any clue on where to start from? an IR reverb example (VST): http://www.knufinke.de/sir/index_en.html best, davide.

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Pd-list April 2005