Pd-list April 2005

pd-list@lists.iem.at

141 participants
255 discussions

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by thewade 21 Apr '05

21 Apr '05

Hi list! I got [symbol ,] to output a comma with backslashes (that dont behave like commas in messages do). Then I saved, closed and re-opend the patch and the backslash comma\'s were converted into real commas. Not perfect, but it almost works. Thanks for the help BTW! I have another question about fft. fft should output two sample blocks each cycle: a real analysis of the signal in frequency bins, and an imaginary analysis of the signal (I dont really understand real versus imaginary, but anyway...) If I multiply some osc~\'s togeather then that sample block should be basicaly 1\'s and 0\'s, right? 1\'s in the bins representing the frequencies of the osc~... Now if I multiply some fft output block resulting from processing a sound file, and this osc~ generated fft sample block, and pass the result through ifft then the resultant signal should only contain the frequencies common to the two input signals, right? how come this doesnt work for me? Lastly, I am using an AMD64 and the tables are all messed up. Guenter explained the problem > Array don\'t store floats but unions of t_word, which are 64 bit broad > on 64 bit architectures. > - One solution is to store doubles instead of float and change all the > types of the temporary variables in all objects accessing array to > double. (externals using float arrays have to be adapted too) > - Another solution is to ignore the t_word type and store all values > as floats in arrays (and read them as floats like it is now) > - We could implement a special iterator or access function to float > arrays (instead of ++ or []) and change all the occurrencers of all > float array objects according to this. (Breaks all float array externals). and said he would post a hacky fix. Has this been done? What will work and what wont with this workaround? What externals will break if this problem were solved by method one? Could we make some special header that these externals read when compiled that would allow them do both union t_word and double, depending on arch? Its quite crippling not to be able to use a whole array, and Im not sure the half array fixes I have been doing work quite right either... Thanks for all the help, one and all. When I become a rock star I will kick you all down some dough! :) I am sooo going to be a rock star. I have the spand-x and everything! -thewade

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OSX - confused - Burt or Hans?
by J. Simon van der Walt 21 Apr '05

21 Apr '05

Sorry, I'm still confused here! What's the quickest & best way forward to get pd going on OSX (Panther) right now? Out of; Samuel Burt http://pcm.peabody.jhu.edu/~sburt/pd/Pd-0.38-3-2005.03.16.zip and Hans http://puredata.org/Members/hans/downloads/installers/Pd-0.38-2hcs0.dmg or should I be looking somewere else? If I've got a slightly older Pd.app version, do I need to root around and extirpate oddly named files from obscure locations? Thanks, -- J. Simon van der Walt ----- Composer <http://www.jsimonvanderwalt.com>

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Re: [PD] sendOSC: handling big numbers
by ggkarman＠musicologia.com 20 Apr '05

20 Apr '05

>> hi list, >> here's an issue I have with OSC: >> >> [send /addr 1000000] >> | >> | >> [sendOSC 1024] >> >> what's transmitted here is not an integer but the string "1e+006" >> >> any workaround to transmit numbers bigger than a million ? > I have no problem sending and receiving big numbers up to approx 10E32 (which is the maximum handled with floats, if bigger my OSCdump reports #Inf) in a loopback with pd 0.38 & OSCx 0.16-2 and windows. Im working on an OSC sender port in an external application, and i have tested pd's OSCdump against those type tags: int, float, char, bool, timetag, string, symbol, rgba_color, midi_message. Those that i couldnt get working were: double,int64... I guess your problem must be a pd's OSC implementation issue, because OSC is supposed to be able to handle with this. Maybe something to do with types implemented in the OSC you are using, or else a typetag issue (sorry, i havent used typetags to send OSC messages from pd). But anyhow you should be able to handle 10E6... > > ... Jesus, a string? > > - John >

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Filling arrays
by Carlos Pita 20 Apr '05

20 Apr '05

Hi! Do you know how can I fill an arbitrarily sized array with a line strip? The goal is to write square, sawtooth, triangular and other simple waves like that and then loop with tabread4~. The array size can be reconfigured, so I don't want to load the table from a presampled file but instead to resample it from the original function when the array is resized. Doing it with line~ is too awkward, scheduling delays and like that, and I guess timing will be wrong cause delays are triggered during control phase, which in general won't be exactly when desired except in case that block size == 1. Is there any object which outputs a strip of line segments? Or perhaps a message to fill the array alla cosinesum? Thank you in advance. Regards, Carlos

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anyone have any luck with [getdir]
by Hans-Christoph Steiner 20 Apr '05

20 Apr '05

I would really like to use [getdir] in the help patches to smooth out the links to the related patches. But whenever I try to use it, it immediately crashes Pd. I am using Pd-0.38-2 w/ Tcl/Tk 8.4.9 built by Ben Bogart. I compiled it from CVS against the 0.38-2 sources. Has anyone had any luck with [getdir]? .hc ________________________________________________________________________ ____ "I have the audacity to believe that peoples everywhere can have three meals a day for their bodies, education and culture for their minds, and dignity, equality and freedom for their spirits." - Martin Luther King, Jr.

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array of lists
by Falk Grieffenhagen.de 20 Apr '05

20 Apr '05

Hi list, I´m rather new to pd, sorry if this might be stupid: In the Gem advanced tutorial (0.38) there is the linear_path object using an array "array2" with 3 dimensions. How can I make an array containing lists?? Falk

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Commas in messages
by thewade 19 Apr '05

19 Apr '05

Hello again list-o-mine! I am trying to string togeather a whole bunch of data seperated by commas, but as you might imagine I am having a bit of trouble. I am using prepend to attach one list to another, but how do I insert a comma? (some message of unknown lenght) [tappa 50 10, < [prepend] new message should look like [tappa 50 10, (rest of message)< What I get is [tappa 50 10 (rest of message)< I humbly ask how do I do the comma insert? Thanks! -thewade

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if - empty list
by Dieter Untermieter 19 Apr '05

19 Apr '05

hi thanks for your hints - they have been very helpful two new problems occured now: - is there anything like a "if"-object in pd. i think that i used such a object in pd, but when i try to create such a object pd tells me that there is no if object. - and i am looking for a way to empty a list. any hints again? yours -- _______________________________________________ NEW! Lycos Dating Search. The only place to search multiple dating sites at once. http://datingsearch.lycos.com

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Re: [PD] sendOSC: handling big numbers
by Sukandar Kartadinata 19 Apr '05

19 Apr '05

>> hi list, >> here's an issue I have with OSC: >> >> [send /addr 1000000] >> | >> | >> [sendOSC 1024] >> >> what's transmitted here is not an integer but the string "1e+006" >> >> any workaround to transmit numbers bigger than a million ? > > If you're willing to lose a small amount of precision (or at least it > should be a small amount, who knows given this craziness), you can > take the square root before transmitting and square it after > receiving. Provided your number is not bigger than one million > millions, that should avoid the problem you describe. nice trick, but I need every single bit as I'm setting mode registers in my gluion interface: glui.de/prod/gluion.html (where resources are too sparse to assign each bit a separate OSC address) the obvious workaround for the moment is to send two 16bit numbers instead of one 32bit...... > > ... Jesus, a string? > > - John >

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Gem performance tests?
by Mike Wozniewski 19 Apr '05

19 Apr '05

Hi all, I'm wondering if anyone has ever published a performance analysis of Pd/Gem? Particularly, I'm interested in: - The type of machine required to adequately run Pd/Gem. - Differences between Linux kernels - particularly compared with the optimized PlanetCCRMA kernel. - The benefit of the -rt (realtime performance) option. - The overhead of the Gem software package to render something that could otherwise be coded in pure OpenGL. Any thoughts would be greatly appreciated. Thanks, Mike Wozniewski

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Pd-list April 2005