Pd-list September 2008

pd-list@lists.iem.at

108 participants
165 discussions

ssb tutorial patch
by marius schebella 02 Sep '08

02 Sep '08

hi, it's labour day, and I am really bored :)), so I was wondering, does ssb stand for single sideband or signal sideband? the tutorial patch uses both, and a single sideband is always a signal sideband, or not?? just curious. thanks. marius.

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recirculating delay line reverberation time calculation
by Claude Heiland-Allen 01 Sep '08

01 Sep '08

Hi all, Referring to Miller's book [1], and having experimented with various delay times, I'm wondering what the "average" delay time used in the text is. If all the delay times are close to equal, then using the arithmetic mean as "average" gives me a reasonably accurate reverberation time calculation. But the more they differ the worse the result is (comparing with measurement against my implementation). [1] http://crca.ucsd.edu/~msp/techniques/latest/book-html/node111.html Intuitively it seems that the sound recirculates more often (and is thus attenuated more) through the shorter delay lines, but this is obviously not taken into account with arithmetic mean. I'm thinking something like harmonic mean might be better (but I tried it and it wasn't a huge improvement, nor was geometric mean). Any clarification would be enlightening, thanks, Claude -- http://claudiusmaximus.goto10.org

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Re: [PD] 'pure' pd DSP abstractions wanted!
by Jamie Bullock 01 Sep '08

01 Sep '08

Hi Roman, On Mon, 2008-08-25 at 12:09 +0200, Roman Haefeli wrote: > may ask, why you are asking? i mean, are you simply interested in having > a set of pure abstractions for your own use or is there an aim to create > a publicly accessible collection? The reason I ask is that I am working on a project called Integra (www.integralive.org, wiki.integralive.org). We have developed an 'abstraction layer' (libIntegra) for wrapping pieces of functionality in an environment-neutral way, and managing parameter storage. The point of our work is that we don't want to re-invent the wheel wrt the actual processing (we don't want to write another Pd, or ChucK, or Csound, or SuperCollider etc), we just want to leverage existing functionality. Our first proof-of-concept has been done with Pd under-the-hood using our integra_pd_bridge. You can make Integra modules that communicate with libIntegra via the integra_pd_bridge, simply by adding an 'adapter' to an existing Pd patch. The reason why I asked for existing 'purepd' abstractions, is that we want to start building a library of modules (a module consists of an implementation (the Pd bit), a definition (a fixed set of data *about* the module), and a set of instance data (the module's state, which we store in XML and then in an online database). See also db.integralive.org (very beta!) I would like to leverage existing work as much as possible, and then feed back into community efforts. At the moment it's looking like we will start by taking some of the pdmtl abstractions and making them 'purepd' if possible. It isn't essential for Integra modules to have no dependencies, but it is encouraged! Then we can feed the work back into the purepd 'project', so everyone can benefit. Ultimately we will do a similar process with other environments, so that one could load the same Integra 'collection' in SuperCollider, or Pd, so long as the implementations are there. > the idea of creating a 'dsplib' was discussend at least once on this > list, but did not end up with someone actually collecting all those > abstractions. personally, i decided to contribute my own stuff to pdmtl, > since a lot of the work of organizing and structuring such a library is > already done there. i found it quite handy, that instead of thinking of > any guidelines i could simply follow them. Yes, pdmtl is a real inspiration. Great project! > otoh, i find it a bit a > pitty, that pdmtl has so many dependencies. most of the time, my > contributions don't use externals, though. feel free to use all of pdmtl > stuff, that doesn't use externals and i would also be willing to assist > with removing them in cases, where they are not necessarily needed. if > your goal is to create an organized pure pd based and publicly > accessible fx library, i could help you with porting my own stuff to > your library. Great! Well I'll be starting this over the next few days, so i'll be in touch as things move forward. > hm.. thinking about that: it actually would be nicer to find a way to > flag all purepd stuff of pdmtl instead of porting all the purepd stuff > into a new library. Or maybe the other way around? Perhaps pdmtl could provide 'references' to purepd implementations, rather than holding them in their repository? Jamie -- www.postlude.co.uk http://www.linkedin.com/in/jamiebullock

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wiimote and OSCroute
by philippe boisnard 01 Sep '08

01 Sep '08

Hello I present my self, philippe boisnard, french artist. I work on mac. currently, I work on the connection between wiimote and puredata, to create a video live performance. I don't have problem to connection thanks to darwiinremote. But my problem comes with recovery wiimote's data. I tried to separate the data with unpack ([oscD] -> [unpack]), but there are many error. I tried with [OSCroute] and I have many error to. I can't create a patch that works good. I believe that, on mac, we don't have [packOSC] and [unpackOSC], isn't it ? How can I to do, to recovery each data ? best regards philippe b

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Fwd: sending OSC bundles. + help files?
by Iannis Zannos 01 Sep '08

01 Sep '08

---------- Forwarded message ---------- From: Iannis Zannos <zannos(a)gmail.com> Date: Sat, Aug 30, 2008 at 1:47 PM Subject: Re: [PD] sending OSC bundles. + help files? To: olivier(a)heinry.fr Hello, and thanks for the answers Derek and Olivier. I still have problems: >> pack0SC-help.pd should contain everything you need to know about >> bundles, accessible through the help browser in 5.reference/mrpeach Unfortunately, I cannot find the mrpeach in the 5.reference folder. Neither does doc/5.reference/oscx exist. I downloaded Extended from http://downloads.sourceforge.net/pure-data/Pd-0.40.3-extended-macosx104-i38… But it does not contain the help files. Also the help menu item crashes PD. Could you please point me to the full URL for pd with mpreach, and to a URL for the documentation that you mentioned? Iannis Zannos ======================================================================= Le samedi 30 août 2008 à 11:19 +0300, Iannis Zannos a écrit : > > > > > > Hello, > > > > How to send OSC messages in bundles? Is there a help file for > > sendOSC? > > Also, is there somewhere a downloadable set of help files for PD that > > covers most objects? > > All of the documentation that I could find on the internet does not > > contain any examples for objects such as sendOSC, dumpOSC, OSCroute. > > You should use mrpeach's objects for bundles and OSC in a general > mamner. They are in pd-extended as well as in subversion. > > Dont mix up (like I used to ) OSCroute which belongs to OSCx with > routeOSC, packOSC and unpackOSC which belong to mrpeach. > > pack0SC-help.pd should contain everything you need to know about > bundles, accessible through the help browser in 5.reference/mrpeach > > > > > Cheers, > > > > Iannis Zannos > > > > _______________________________________________ > > Pd-list(a)iem.at mailing list > > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > >

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Pd-list September 2008