Pd-list March 2008

pd-list@lists.iem.at

150 participants
274 discussions

A couple new list-abs
by Luke Iannini (pd) 06 Mar '08

06 Mar '08

Hallo, Here're two new list-abs, list-range and list-zip. list-range spits out sequences from n1 to (n2 - 1), optionally separated by a positive or negative "step" interval m. It's based on Python's range() function[1]. You can either use it as a shortcut by specifying creation arguments and [bang(ing it, or send in one, two or three arguments to get a new sequence (n1 (for 0...n1-1), n1 n2, or n1 n2 m). list-zip interleaves lists of equal length to produce a new list. It defaults to two lists, but uses dynamic patching to modify its inlets to accept an arbitrary number of lists. So, for example, [1 2 3 4( and [A B C D( would become [1 A 2 B 3 C 4 D(. list-zip is based on Python's zip() function[also 1]. Regrettably[2] list-zip requires [initbang] for its dynamic inlet creation, but list-range is a purely vanilla affair, requiring only the existing list-abs from Frank's library. Inside the help for list-zip, you'll find a recreation of list-enumerate using 4 objects. Cheers Luke [1] http://docs.python.org/lib/built-in-funcs.html (sorry, they don't have links to the individual functions) [2] only regrettable that this isn't included in vanilla yet!

5 9

how to get plugin~ to work on windows with LADSPA plugins?
by Rua Haszard Morris 06 Mar '08

06 Mar '08

I'm trying to use LADSPA plugins with PD on windows... I've got the most recent pd-extended package installed, Pd version 0.38.4-extended-RC8. I figure I need to tell it the path to the ladspa dlls (I'm using ones that came with Audacity for now), and give it the correct parameters. I copied a plugin (sc4.dll) to the pd bin folder and the extras folder, as I expect pd/plugin~ looks in those places.. E.g. would "plugin~ sc4 sc4.dll" be the correct thing to type to get it to load the sc4 compressor plugin? Is it possible to use LADSPA plugins on windows? If so, I'd really appreciate someone telling me how... if I get this working maybe I'll update the pure-data.info wiki with the details.. thanks in advance Rua HM. Send instant messages to your online friends http://au.messenger.yahoo.com

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Pduino and the AD5206 digital potentiometer
by nick burge 06 Mar '08

06 Mar '08

Dear PD list. I would like to be able to control the AD5206 chip (a 6 channel digital potentiometer) from within the Pduino object written by Hans-Christoph Steiner. The idea comes from one of the tutorial exercises in the C++ arduino program. http://www.arduino.cc/en/Tutorial/SPIDigitalPot Is this relatively simple to do, or simply impossible? The aim in the long run is to be able to be able to calibrate 6 force sensors remotely using the digital potentiometers for an art installation project. I have got the above mentioned tutorial project up and running succesfully using the arduino program, and I am also able to get Pduino communicating with the arduino quite happily on my Windows Vista system, but I would imagine to have control over the the digital potentiometer device from within PD would require a revision to the Firmata firmware would it not? I would be most grateful for a clue. thank you for your attention, sincerely, Nick Burge.

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Re: [PD] understanding vline~
by matteo sisti sette 06 Mar '08

06 Mar '08

Marius wrote: > the message in the help patch should go to 1 over a duration of one > second, then jump to zero after one second and then ramp up again > starting after 1 second (counting from the time when you clicked). Which means: go to 1 over a duration of one second, then immediately (after that) jump to zero, then immediately (after that) ramp up again over a duration of a second: i.e., two consecutive ramps, sawtooth-like, in a total time of 2 seconds. UNLESS _before that_ you have clicked some other message and the vline~ has an initial value of 1, in which case you won't notice the first ramp (because it is a ramp from 1 to 1) which _may_ be what confused the author of this thread. -- Matteo Sisti Sette matteosistisette(a)gmail.com http://www.matteosistisette.com

1 0

how to get plugin~ to work on windows with LADSPA plugins?
by Rua Haszard Morris 06 Mar '08

06 Mar '08

I'm trying to use LADSPA plugins with PD on windows... I've got the most recent pd-extended package installed, Pd version 0.38.4-extended-RC8. I figure I need to tell it the path to the ladspa dlls (I'm using ones that came with Audacity for now), and give it the correct parameters. I copied a plugin (sc4.dll) to the pd bin folder and the extras folder, as I expect it looks in those places.. E.g. would "plugin~ sc4 sc4.dll" be the correct thing to type to get it to load the (excellent) sc4 compressor plugin? Is it possible to use LADSPA plugins on windows? If so, I'd really appreciate someone telling me how... if I get this working maybe I'll update the pure-data.info wiki with the details.. thanks in advance Rua HM. Send instant messages to your online friends http://au.messenger.yahoo.com

1 0

working windows builds...
by Hans-Christoph Steiner 06 Mar '08

06 Mar '08

I fixed the invisible patches bug on Windows, Martin Peach was right, it was related to namespaces. And thru some help from #tcl, I found a nice, clean fix that also should introduce bytecode caching to all Tcl commands. It also updates the code so it doesn't use a deprecated API. Here are the relevant changes: http://pure-data.svn.sourceforge.net/viewvc/pure-data/branches/pd- extended/v0-40/pd/src/t_tkcmd.c?view=diff&r1=9168&r2=9540&diff_format=h If it all works out, there should be a working Windows build here by tomorrow: http://autobuild.puredata.info/auto-build/2008-03-06/ .hc ------------------------------------------------------------------------ ---- ¡El pueblo unido jamás será vencido!

1 0

For Frank, question on 'sssad'
by Mike McGonagle 05 Mar '08

05 Mar '08

Hi Frank, After the conference, Hans had suggested something that might be of some good use. He had mentioned that there are two "backends" for storing data using 'sssad', one using [textfile] and the other using [pool]. Hans had suggested that we create a similar function for the SQL library that we are currently working on. I am curious as to how 'sssad' works, as the version that I have (with the extended stuff) doesn't seem to load up correctly. If I go into all instances of [sssad] and prepend it with the folder name [sssad/sssad] everything works. I am just a bit hesitant to do anything, as I am working with a 'broken' copy, and wanted to make sure it was correct. Is there a version that you have that I could try out? Or should I just take the version from the extended distro and "fudge" them? Thanks, Mike -- Peace may sound simple—one beautiful word— but it requires everything we have, every quality, every strength, every dream, every high ideal. —Yehudi Menuhin (1916–1999), musician

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Re: [PD] parallel processing
by marius schebella 05 Mar '08

05 Mar '08

No, I missed LAC, but it is not surprising that people research in that direction. I was looking through some papers yesterday, but not the one from jÃ¼rgen, will catch up on that. marius. AndrÃ©e PrÃ©fontaine wrote: > > Le 08-03-04 Ã 11:14, marius schebella a Ã©crit : > >> hi, >> I am reading an old interview with james moorer (with curtis roads in >> CMJ/6 1982). one funny thing is that he says, 'software synthesis is >> either dead or dying[...] I am hoping it's demise will be quick and >> relatively painless.' >> in return he predicted all computation being done on special dsp chips. >> in part he was right, but on the other hand the main cpu got more than >> fast enough to survive (gfx is slightly different), but - and I am >> coming to my point - he also was thinking about hundreds or thousands of >> parallel processing elements. right now, we are going to have several >> and in the future many many parallel CPUs, and the need for parallel >> processing is back. miller was talking about that in montreal. >> so I wonder how pd will survive that evolution? afaik the current >> situation is poor in this regard. can anyone give an outview for the >> future? would it be a jump from pd (I) 0.43 to pd II 0.1? >> marius. > > Where you at Lac 2008? because JÃ¼rgen Reuter gave a lecture on the topic > with who you are interested. > I do wonder too in this regard and where very interested in his > presentation : exploiting multi-core architectures for fast modular > synthesis > > AndrÃ©e >> _______________________________________________ >> PD-list(a)iem.at mailing list >> UNSUBSCRIBE and account-management -> >> http://lists.puredata.info/listinfo/pd-list > >

10 17

Improved bug report: [expr] on Windows 2000 (XP non-professional)
by David F. Place 05 Mar '08

05 Mar '08

Hi: Yesterday, I rather vaguely reported a bug I encountered on my friends Windows XP non-pro machine. I have been able to reproduce it on my Windows 2000 machine. Windows 2000 5.00.2195 Service Pack 4 Pd 0.41-2 downloaded from SourceForge 1. Download and install Pd. 2. Run pd.exe in the bin directory. 3. Open exponential.pd from the Audio Examples section of the Help files. expr exp(-($f1-1)/100) ....couldn't create The usual startup message giving the license info for [expr] was not displayed. This procedure works fine on my Windows XP Professional machine. Thanks. ___________________ (---o-------o-o-o---o-o-o----( David F. Place mailto:d@vidplace.com

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Pd performance practice
by Oded Ben-Tal 05 Mar '08

05 Mar '08

Dear all, A while ago I was trying to find 'good houskeeping tips' for using Pd in performance and couldn't find any (what to avoid, how to organize patches, etc.). does anyone know of something like this? If not where would be a good place to put such a resource? I presume that the collective (good as well as bad) experience could provide a useful resource for starting to use Pd in performance. -- ___________________________________________________ Oded Ben-Tal http://ccrma.stanford.edu/~oded oded(a)ccrma.stanford.edu

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Pd-list March 2008