Pd-list February 2005

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137 participants
200 discussions

Pd on PPC Net/OpenBSD
by John Nowak 27 Feb '05

27 Feb '05

Is there anyone here using Pd on a PPC system running netbsd or openbsd? Similarly, is anyone here having good results with Gentoo on a PPC system with the 2.6 kernel? I'd be running it on a recent model Powerbook. I searched the archive, but couldn't find anything. I also just found out that Pd is under a BSD license. I always assumed it was GPL. Lovely! - John

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how to prevent midi endless loops?
by wolfgang schwarzenbrunner 27 Feb '05

27 Feb '05

hi maybe a quiet simple question.... i need to use a midiinterface (doepfer pocket dial) to control slidervalues in pd (windows -- xp 0.37). the problem is that i also want to change the values using the sliders in the patch and having this data being sent back to the controller so that there are no jumps in value when switching from screen to hardware controller and back... finally i built up a very simple t b f b and spigot combination to prevent stackoverflows within pd. this works pretty fine as long as i don`t use mididata to control the sliders... attached is a little patch that should explain... any help needed...

2 1

time elapse with Pd
by Hans-Christoph Steiner 27 Feb '05

27 Feb '05

So I need to do a time elapse, like 3 days, to make a video of an installation I am working on. I want to use webcams and Pd to grab a frame every so often, and also stream the video out at the same time. Anyone know of any time-elapse patches out there? Its always easier to start with working code... .hc ________________________________________________________________________ ____ "Looking at things from a more basic level, you can come up with a more direct solution... It may sound small in theory, but it in practice, it can change entire economies." - Amy Smith

1 0

resonant comb filter series
by derek holzer 27 Feb '05

27 Feb '05

Hi Pun Chik, > hi . can u send me an example patch of this harmonic series of resonant > comb filters...im really interested in learning this. an example patch > would be really nice I'm a bit too busy to make a simple demo right now, but the principle is easy to understand: A comb filter is simply a very short delay with a high amount of feedback. It is so short that it's length becomes an oscillating waveform. Try making a simple [delwrite~ delayname] and a [vd~ delayname]. Now make a feedback loop by connecting the [vd~ delayname] back into the [delwrite~ delayname], and multiply this by a number less than 1. Something between .9 and .99 will give you a good ringing sound. The output of the [vd~ delayname] also gets sent out to the [adc~] for you to hear. Divide the samplerate by the frequency you want the comb filter to resonate at, then divide by 1000 to get the delay length to send to the [vd~ delayname]. It would be good to put your [delwrite~] and [vd~] objects in a subpatch with a [block~ 1] object, which sets the blocksize to 1 and allows for the shortest possible delay times [which in turn gives you the highest possible resonant frequencies]. To make a resonant series, make multiple instances of this [as abstractions, don't forget to use $0 in the "delayname"!], and send the base frequency to the first comb filter abstraction, and multiplications or divisions of that to subsequent "harmonic" subpatches. Integers [2,3,4...] will produce clean harmonics, while other numbers [.98, 1.34, 2.22...] will be detuned to various degrees, resulting in an acoustic "beating" phenomenon as waveforms amplify and cancel each other out. The same audio input is sent to all the comb filters. Sharp, percussive sounds will "ring" the filters, giving you a plucked-string kind of sound. Continuous sounds give something like a guitar or sitar type of drone. Try changing the multipliers of the "harmonic" filters for different drone or tonal effects. All in all, I find it is much better for people to understand the principles of how these things work, so building your own will be great practice! Google for "karplus-strong" for more technical/mathmatical info. Good luck, derek pun chik wrote: > hi . can u send me an example patch of this harmonic series of resonant > comb filters...im really interested in learning this. an example patch > would be really nice > many thanks > punchik > > On Tue, 08 Feb 2005 18:11:04 +0100, "derek holzer" <derek(a)x-i.net> said: > >>Hi Marcus, >> >>marcus estes wrote: >> >> >>>I'm a big fan of the Keith Fullerton Whitman album "Playthroughs," >> >>Me too! I got a similar effect by using a harmonic series of resonant >>comb filters triggered by contact mike input. The mikes are attached to >>various bits and bobs I found in the Amazon... shells, plants, bones and >>other unidentifiable stuff that produce nice sounds when plucked, >>scraped or bowed. The comb filters are run through a granulating >>feedback delay that makes "clusters" of particles similar to what you >>hear on "Playthroughs" or "21:30 for Acoustic Guitar". Three or four >>delays set at irregular intervals [i.e. 3/4, 7/5, 5/9, etc] add further >>texture. >> >> >>>I'm also a big fan of Derek Holzer's Particle Chamber patch. >> >>Thanks! ;-) >> >> >>>I have considered re-tooling the Particle Chamber for use with a live input, >>>but that seems a bit tricky. >> >>It's not too hard, really. Particle Chamber reads from static tables, >>grabbing sections of loaded soundfiles and playing them back. I've built >>a few adaptations for myself of this idea using delay lines instead of >>tables, and they perform on input audio in the same way. I just haven't >>cleaned them up for release yet. But if you compared the "guts" of each >>patch, you would find them almost identical except for the source of the >>sound. The mechanics remain pretty much the same. Play around with that >>for a while, and I promise to clean up my own version sometime in March >>for public release. >> >>best, >>derek >> >> >>-- >>derek holzer ::: http://www.umatic.nl >>---Oblique Strategy # 36: >>"Consult other sources >>-promising >>-unpromising" >> >>_______________________________________________ >>PD-list(a)iem.at mailing list >>UNSUBSCRIBE and account-management -> >>http://iem.at/cgi-bin/mailman/listinfo/pd-list -- derek holzer ::: http://www.umatic.nl ---Oblique Strategy # 36: "Consult other sources -promising -unpromising"

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poll: common problems when sharing performance patches
by Hans-Christoph Steiner 27 Feb '05

27 Feb '05

For the next phase of my [hid] toolkit project, I want to focus on addressing issues that make it difficult to share performance patches made with it. RRADical is a very good example of what I am trying to accomplish with the HID side of things.So I thought I'd start with an informal poll of common problems people have when trying to use someone else's performance patch. The most obvious one that I can think of right now would be getting the correct objects and libraries, and then there are the name conflicts. These are things that are being addressed, albeit slowly. I am particularly interested in patching styles, object functionality, etc. that makes sharing performance patches easier or harder. .hc ________________________________________________________________________ ____ "The arc of history bends towards justice." Dr. Martin Luther King, Jr.

3 2

help with touchpad extern
by robertgarvin＠bellsouth.net 26 Feb '05

26 Feb '05

Still pursuing the use of the touchpad, i looked online, and found this site: http://www.utexas.edu/cofa/music/ems/research/petrovich/public/pd/pdstuff.h… installed all the files, and it doesn't create the outlets. I am wondering if anyone else can help me with this, or if it'd be possible to use one brand of touch pad, but use a different (synaptics) pad's drivers. -Robert

1 0

send me the data on your usb controllers
by Hans-Christoph Steiner 26 Feb '05

26 Feb '05

So I would like to catalog information about as many HID controllers as possible so that I can create a reference page for which controllers are good and which are not. In particular, it would be helpful to have a list of all of the elements available for a given device (which buttons, which axes, which haptic effects, etc.), and the resolution of the elements (i.e. throttle = 35.85, x- and y- axes = 0-127) Here are two examples of force feedback joysticks that I have: resolution buttons force name x/y z throttle thumb base hatswitch effects ------------------------------------------------------------------------ --------------------- Logitech Wingman Force 3D Joystick 0-127 0-127 35-85 4 2 1 8-way all Saitek Cyborg Force Feedback 3D 0-4095 0-4095 0-256 4 4 1 8-way all .hc ________________________________________________________________________ ____ "[W]e have invented the technology to eliminate scarcity, but we are deliberately throwing it away to benefit those who profit from scarcity." -John Gilmore

1 0

3d loader- 3dsmax to maya converter?
by beau25＠access4less.net 26 Feb '05

26 Feb '05

Hia List, Max and Manuel, In maya you can export polygon models to .obj files that will load into Gem's model object. First you need to enable the objexporter plugin from the plugin's preferences window to beable to save in that format. let me know if you have any questions, success or want to work on this collaberatively? -beau http://www.cypod.co.nr

1 0

PD wiki Bulgaria
by Ales Zemene 26 Feb '05

26 Feb '05

Hi, there is call for contributions to bulgarian Pure Data project from navmemo(a)yahoo.com http://nml.cult.bg/nmlwiki/pmwiki.php?n=Main.PD-BG greetings Ales Zemene -- http://ales.mur.at irc.kunstlabor.at #kunstlabor icq 298387338

2 2

Re: [PD] Wave Shaping
by zmoelnig＠iem.at 25 Feb '05

25 Feb '05

Zitiere Phillip Stearns <mindphone_divided(a)yahoo.com>: > Thanks for the tip! So is general rule to avoid realtime expr~ objects > if at all possible in the future? > i would have thought though some months ago, but matiu and tim taught me better. [expr~] is a very useful and fast object (it is not slower than writing the maths in pd) (to know this would have saved me a _lot_ of patching in the past) mfg.asd.r IOhannes

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Pd-list February 2005