Pd-list March 2005

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166 participants
274 discussions

whisper filtering and fft
by Phillip Stearns 30 Mar '05

30 Mar '05

I'm attempting to create whisper-like effects using cascading and parallel filtering of noise. Does anyone have some filters that they would recommend or point me towards. I'm pretty sure that this would be the same type of filtering associated with speech related formants. I'm also interested in filter settings that will replicate most vowels/phonemes. Is there a good resource that explains how PD's FFT works with some explanation of the theory and applications. The help files just don't explain enough and I don't have enough of a background in FFT as of yet to figure out meaningful manipulations or applications of the data. Thanks, Phil __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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installing gem truetype
by Ales Zemene 30 Mar '05

30 Mar '05

hi, gltt-2.5.2 ./configure : configure: error: FreeType (libraries) not found. Please check your installation! what is it exactly looking for ?, i have /usr/include/freetype/ and /usr/include/freetype2/ thanx ales

2 2

VASP future
by Thomas Grill 30 Mar '05

30 Mar '05

Hi all, i'm thinking about the future of VASP these days since i'm myself using it for compositional work. Said this, it is not completely true though, since i'm using the numarray extension of the py/pyext external (CVS version), which allows to work with PD arrays in Python. I consider this the future of VASP (namely to be a pure Python module), although it will perhaps be called differently then. Realizing there are still a number of daily downloads although i haven't touched VASP for quite a while now let's me ask you about your usage of VASP. Do you use it for - simple array math/transformation? - medium complex things like analysis or synthesis? - complex work like algorithmic composition and the likes? - none of the above? - something completely different? Does it have to provide - real-time response (like for interaction with DSP processing)? - or not? Do you predominantly use - singular VASP objects? - groups/whole subpatchers of interacting VASP objects? I realized in my own work that it's very hard to express complex stuff as PD graphs, and also VASP has the problem of needing to lock arrays while working on them, which still isn't really implemented in PD (it is in the devel branch, but the future of this isn't clear either). The question is now whether i abandon the current PD object implementation of VASP and focus on the Python one, or think about a side-by-side solution of both systems, probably reducing the functionality of the current VASP implementation a bit. There's still time to decide since the Python array implementation hasn't been standardized yet.... Let me know what you think and if you care at all. best greetings, Thomas

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Re: Mac OS X installer with library documentation
by Burt 30 Mar '05

30 Mar '05

Greetings again, I have posted a new version of an installer for OS X. http://pcm.peabody.jhu.edu/~sburt/pd/installing_pd_os_x.html Rob Lycett requested that I add the comport library and its documentation, so I did. I was also frustrated by tcl/tk handling of submenus within submenus. If anyone knows how to do this, please let me know. So, I placed the 7.stuff subdirectories directly into the Help menu which is not elegant and only temporary. I also added a zexy submenu to Help (which I had previously forgotten). So, now there should be easy to find documentation on basic PD objects, the libraries Gem, vasp, pmpd, Han's hid, and Zexy, plus everything inside the stuff folder including (now) comport. I feel that a better way to organize the Help menu (with my segregated library approach) would be to do it with submenus for PD and major libraries and an extra folder for smaller things: PD Documentation/ HTML manual/ control examples/ audio examples/ fft examples/ Gem/ pmpd/ vasp/ zexy/ extras/ hid/ comport/ stuff/ audio playpen/ data-structures/ soundfile-tools/ synth/ tools/ Unfortunately, this would require a restructuring of PD documentation as it is now, and I would have to understand how to create submenus in submenus in tcl/tk. Can anyone do this? What would be really cool would be to adjust the Pd script so that Help documentation of a particular library does not appear until the library is loaded. That way, we avoid users opening help patches and getting messages about objects not existing (or worse yet, PD crashing). Samuel Burt

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monophonic behavior...(again) how to get the lowest note?
by federico 30 Mar '05

30 Mar '05

i got the h_stack working for incoming midi notes in order to achieve monophonic portamento (see the attached patch). however this method has a bug: you press C3 (osc plays C3) [stack->push(C3), out: C3] you press F3 (osc slides to F3) [stack->push(F3), out: F3] you release C3 (osc slides to C3) [stack->pop(), out: C3] (wrong! F3 now it is the only note pressed, but osc plays C3) remembering how VAZ works, i'm thinking that it is better to get highest (and lowest) note pressed, rather than using a stack. however i can't find a container that would do the job. can you help me?

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Re: [PD] $1, message objects and pdsend
by Frank Barknecht 30 Mar '05

30 Mar '05

Hallo, simon wise hat gesagt: // simon wise wrote: > but is there a simple way to [prepend] without using external > libraries? Short answer: No, there isn't, if you need to handle lists of variable length. Ciao -- Frank Barknecht _ ______footils.org__ _ __latest track: "scans" _ http://footils.org/cms/show/41

2 1

useful abstractions from wrapping python scripts
by B. Bogart 30 Mar '05

30 Mar '05

Hey all, Since I've been moving my TOT functions over to python scripts I've created a couple of useful abstractions. I was wondering if anyone else was working on a similar thing. I've decided to wrap my py externals in abstractions so that the act more like normal PD objects (but not bothering with pyext). so far I have only two: stripExtension.pd dirlist.pd I'm planning on adding stripPath to leave only the filename from a path left. Anyhow I think a collection of little easy pythonscripts acting as abstractions would be great for all those little things like stringprocessing. also I have a tot abstraction [dirpanel] that just executes tk_chooseDirectory. Makes sense to discuss this to limit redundancy in abstractions. B.

2 1

3dp install dependencies
by vze26m98 29 Mar '05

29 Mar '05

Hi all- Installing pdp-0.12.4 on Debian Linux 2.6.8 ppc on a Pismo. I'm making the opengl modules and it's choking on the need for "glut.h". Does anyone know whether I need to install the freeglut/libglut packages, or can I just substitute "GL/gl.h" and "GL/glu.h" for "glut.h"? Many thanks! Charles <vze26m98(a)optonline.net>

2 4

multi-colored arrays inside one table || zoomable tables ?
by andy graybeal 29 Mar '05

29 Mar '05

i'm wondering if it is possible to have multiply colored arrays inside of one table. i recently got the hang of having multiple arrays in one table, and i'm wondering if i can have each array with seperate colors. i would like to have for instance, an audio sample inside the table, and have it be blue, then i could have another array overtop of that and have that array be orange, and it would conceivably represent an envelope that could control anything,say amplitude, and then another array on top of that would represent my panning envelope..and on and on.. until i had so many colors (arrays that represented envelopes) that i ended up being confused ;) also, i have been trying to make a nice eq interface, and for the seperate poles on the eq, it would be nice to have those represented as different colors inside one table. i'm sure others can think of other applications... random afterthought, different colors inside an array itself? (though i have no application as of yet for this.. but maybe someone else would) || another question.. i'd like to resize the width and the height of tables on the fly (conceivably with sliders??).. i know i can right click on a table and go to properties and change the width and height inside of there, and then click 'ok' and then my table resizes. this is tedious and cumbersome. it would be nice to have each width and height have it's own control (slider??) and as well as have either of those "locked" to each other as to keep the same 'aspect ratio'. in essence giving the effect of a 'zoomable' table. please note that i'm not talking about resizing the array data or the graph bounds, but i don't see why it would hurt to have the same type of control on these parameters as well. i might just be lazy here, but i would find it helpful, and slick too ;) cause all ya'all know is i jus' wanna impress the grrls !!! shouts to #dataflow on freenode... -andy (minDasterisk)

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Re : [PD] pdp/ffmpeg
by ydegoyon＠free.fr 29 Mar '05

29 Mar '05

> Hi Folks > My fist crack at pdp - so far so good with some Quicktime playback, but I find that I can't play most > Quicktime files - I get an error telling me that the codec isn't supported. JPEG codec works fime > (anim-1.mov from the Gem docs) but I haven't found another QT file that works. Is there a good place to > look for such files? Right now I just want to try and get this thing running... pdp will support as little codecs as libquicktime does, that's the deal. mainly, photo-JPEG and Sorenson, but depending on your version of libquicktime. anyway, if you can't read it with 'lqtplay', you won't be able to read it with pdp. on a side note, i have the impression that i answered 657 times to that question. > Part two: from the pdp_capture help patch, pdp_ffmpeg~ won't create. Is there anything I need to do > outside pd here? I've got the Debian packages for pdp and have tried ffmpeg both from the packages and > from CVS. if you want pdp_ffmpeg~, you need to compile pidip with --with-ffmpeg=/path/to/ffmpeg/sources but not sure you really need it. it was used before to stream, but now will be replaced by pdp_theonice~ for streaming. saludos, sevy

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Pd-list March 2005