Pd-list August 2008

pd-list@lists.iem.at

101 participants
156 discussions

Writing texture to different sides of cube in GEM
by Adityo Pratomo 26 Aug '08

26 Aug '08

Hi there everyone, i have a question here. How can i write different images on every different sides of a cube in GEM? So that when i rotate a cube, i could see a certain image on a certain side. I know i should use [pix_image] and [pix_texture] but how can i achieve my goal? I kinda lost here. Many thanks for any suggestions. :-)

14 31

Csound opcode Moogladder to Pd?
by Anton Hörnquist 26 Aug '08

26 Aug '08

I've used the Csound opcode Moogladder (based on an algorithm by Antti Huovilainen) in Pd using csoundapi~. It uses a lot of cpu cycles but it sounds really good. The csoundapi~ external is useful but it only allows one instance per patch on windows so ideally I would like to have this opcode as a Pd abstraction or external and get rid of the csoundapi~ external. Is it possible to convert the Moogladder opcode to a Pd abstraction? Csound code: http://www.csounds.com/udo/displayOpcode.php?opcode_id=32 /Anton

4 4

Avoiding clipping with tabread4
by PSPunch 26 Aug '08

26 Aug '08

Hi list, I hope my repeating questions don't annoy anyone. I've sent a similar question a while back to [pd-ot] but with out response, have been thinking over it, found no answer so far. Although I had never concerned it till recently, I've learned that 4 point interpolation may at times return values less than -1 or greater than 1 even when the 4 reference points are with in that range. i.e., having a table of [-1 1 1 -1], an index of 1.5 will return 1.25 with [tabread4] Are there any common practices to avoid unexpected clipping introduced by [tabread4] or [tabosc4~] ? Further more, under what circumstances (what 4 values referred to) will the returned value exceed the range most? Thanks in advance.. -- David Shimamoto

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[Style Guide] 1. Separators in Send/Receive/Value names
by Luke Iannini 25 Aug '08

25 Aug '08

Okee, here's the first small wooden building for the storage of two-wheeled mechanical contraptions which we must design, architect and finally apply an agreed-upon shade of thin colored acrylic. Ratification 1: Separators in Send/Receive/Value names Synopsis: When writing send and receive names, two situations arise in which one might like to separate components of a name. 1. To separate two words, as one would normally do with a space. 2. To separate items in a hierarchy, as one does in a filesystem. The characters under consideration are: _, -, ., / (and, camelCasing) Examples: Separators after a dollarsym, like $0-send. Separators when writing a multi-word name, like my-long-send-name. Separators when writing a hierarchical name to be used within Pd, like drumkit.snare.noise.amount. Possible confusion: Writing a hierarchical name to be used with OSC, like /drumkit/snare/noise-component, and when writing a namespaced pd object name, like [mapping/upsample] Questions: Should we separate dollarsyms with the hierarchical separator, or the space separator? (i.e., if space is "-" and hierarchy is ".", should it be $0.my-send or $0-my-send?) Should we reserve the /, the most obvious choice for a hierarchical separator, for use in OSC names and namespaces, using "." as a 'Pd-hierarchy-separator', or adopt the / for Pd name hierarchies as well? ------------------------- Now, my thoughts on this: I think we should adopt "-" for spaces, since it's the most prevalent style I've encountered. And, I think whatever we decide on as the hierarchical separator should be used to separate $0, $1 etc from the name itself. When creating a hierarchy in a send/receive, one usually gloms together keys from parent abstractions, e.g. start with /bigsynth, then inside pass $1/filter to a child abstraction, then inside that use $1/cutoff to get /bigsynth/filter/cutoff. I see $0 as no different; it means (or, is used to mean) "this-instance"/cutoff, and thus should be separated accordingly. And, I have a slight leaning towards "." over "/" as the send/receive hierarchical separator since it provides a distinction from OSC addresses and namespaces. Best Luke

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'pure' pd DSP abstractions wanted!
by Anton Hörnquist 25 Aug '08

25 Aug '08

Hi, > I'm looking self-contained DSP abstractions that only use Pd - no > externals. Things like reverbs, different types of filters, delays, a > pitch shifter, harmonizer -- a kind of basic 'FX' toolbox. The jon~ reverb abstraction I posted to the list does not require any externals: http://lists.puredata.info/pipermail/pd-list/2008-05/061959.html http://www.hornquist.se/pd/jon > Thoughts I've had so far: > > - Pull stuff out of the Pd help patches I like rev1~, rev2~, rev3~ from pd vanilla. the H15.phaser.pd patch is also quite nice.. There are lots of stuff in there. > But, maybe someone has a nice 'set' of such abstractions sitting on > their hard drive, that they wouldn't mind releasing into the public > domain -- or under some permissive license. In my view jon~ is open source so feel free to use it in any way. I'm not sure how to... well.. document this. What's the best and simplest way? Should I write something about it in the help patch? What license should I use - GPL? Any hints about this are appreciated. :) /Anton

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loopool63
by mik 25 Aug '08

25 Aug '08

hi where can i find it? though it shouldn't, the version on tim blechmann's member page (http://puredata.info/Members/timblech/loopool63/view) is still 64. thx mik

1 0

limit CPU usage
by Ignacio Viano 25 Aug '08

25 Aug '08

Is there any way of limiting PD's CPU usage under OS X 10.5? Thank you Ignacio

1 0

multiblob for multitouch on macosx?
by punchik punchik 24 Aug '08

24 Aug '08

hello, is there something wrong with pix_multiblob on macosx? its too slow!!! ive made some patches for tracking people with mutliblob in the past on ubuntu and worked fine, but i remember i just can track up to 8 people at he same time before my computer become slow. now im on a faster mac computer and my multiblob patches works very slow also if i just track 1 blob... Do anybody know why is this? im using pd 0.40.3 extended. Do you think its possible to track 20-30 blobs with multiblob? i was thinking to use it for multitouch. many thanks P.

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stereo vision - disparity
by olsen wolf 24 Aug '08

24 Aug '08

hi i just got 2 logitech webcams at once running & started playing around with them. my curiosity is orbiting around computer stereo vision experiencing gravity by it's construction of depth. is anyone experienced with things like binocular disparity algorythm for stereo vision & might have some recommendations? as far as my nose dipped into research there's nothing within pds extensions?! thanks for hints & salutis olsen -- Planet Pluto bleibt!

1 0

problems with pd and soundcard hercules 16 12 FW
by Carlo Benzi 24 Aug '08

24 Aug '08

Dear members of the pd-mailing list, I'd like to tell you about the following problem. I have a Hercules 16 12 FW-Soundcard. It works well with Max/MSP (Win and Mac OSX).When I use pd (with the audio drivers MMIO) I can use only 2 inputs and 2 outputs (with Max/MSP on the same computers I can use all the 16 inputs and the 12 outputs). When I choose the Asio drivers from the menu Media/ASIO (via portaudio) pd freezes and I have to force the exit from the program by the task manager of Windows. What shoud I do in order to use all the channels of the Soundcard? Thanks for your kind attention! Best greetings Carlo

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Pd-list August 2008