Pd-list October 2012

pd-list@lists.iem.at

100 participants
170 discussions

[PD-announce] apt.puredata.info is back!
by IOhannes m zmoelnig 05 Oct '12

05 Oct '12

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 last night hans and me finally setup a replacement machine for apt.puredata.info[1], the ultimate source for Pd-extended on Debian-based systems (Debian, Ubuntu, Linux/Mint,...)[2]. it is now hosted on the puredata.info portal/mailinglist server, courtesy of iem. fgmasdf IOhannes [1] http://apt.puredata.info/ [2] http://puredata.info/docs/faq/debian -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAlBkUPcACgkQkX2Xpv6ydvQbWACgz3R2G1E16kEgWJYYreEYiTTe 3OIAn3pGIKY4rvuVGVNkHjgShDloTi4G =5vNI -----END PGP SIGNATURE----- _______________________________________________ Pd-announce mailing list Pd-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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splitting a list into pairs of two
by Alexandros Drymonitis 05 Oct '12

05 Oct '12

Hi all, I'm trying to get pairs of two out of a list using two [list split] (I tried to reproduce the patch with ASCII, but it's getting a bit complicated, so I've attached it). I'm sending a list [1 2 3 4( and I want to get 1 2 2 3 3 4 separately but I get an additional 4 4 in the end. Meaning, in the Pd window I get the following printed out: 1 2 2 3 3 4 4 4 How can I avoid that last couple of numbers? I guess it shouldn't be difficult, but I just can't see it. Thanks ------------------------------

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Looping through an array a specific number of times
by Rick T 04 Oct '12

04 Oct '12

Greetings All I'm trying to loop a wav file a specific number of times after I load it into an array and play it using tabread4~. I was going to use moses and a spigot and I found the "loop" object but it doesn't have any help information it's just another sub-patch. Is their another object I should use to control the amount of loops a sound file plays? Thanks Rick

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Too many objects (but only in Windows)
by Ed Kelly 04 Oct '12

04 Oct '12

Hi list, I know you main devs have bigger fish to fry right now, but an answer to (some of) my wierdness with Gem (in case you're interested) -- the "unable to save file: too many objects" message, and related errors (files no longer loaded within the patch, Pd seems to lose its bearings/path) only seem to occur on Windows. Something gets corrupted in Pd but I don't know what. I've not got my new PC opening a Gem window yet (Ubuntu 10.4 - see previous posts), but my old laptop with Ubuntu 9.10 runs the gemnotes patch I'm working on OK - before it overheats :-! Here's the patch at it's previous working state - open Islands_Score_M1.pd and hit the "START" toggle on the left-hand side of the patch. I'm using Pd-extended-0.42 so I'll have to see whether later versions of Gem/Pd don't exhibit this behaviour! It's a mystery - I've tested it on Win7 32 and 64 bit, and the same error occurs. Works fine on OS X 10.6.8 and Ubuntu Linux. Ed Gemnotes-0.2: Live music notation for Pure Data, now with dynamics! http://sharktracks.co.uk/

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[PD-announce] pd berlin meeting 4. october c-base
by Malte Steiner 03 Oct '12

03 Oct '12

PD Berlin meetings are from now at C-Base (Rungestrasse 20 Berlin) every first and third thursday in the month beginning 20:00, the next one is 4.October. Looking forward to it and thanks C-Base for hosting us. Send me a email or post here for further questions... http://puredata.info/community/groups/pd-berlin/pd-berlin-users-group/ <http://puredata.info/community/groups/pd-berlin/pd-berlin-users-group/> _______________________________________________ Pd-announce mailing list Pd-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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Pdsend on Raspbian...
by Pierre Massat 03 Oct '12

03 Oct '12

Dear List, I had to format my SD card after rpi-update filled up the entire disk. So I installed the latest version of Raspbian("2012-09-18"), and installed Pd. It seems to work ok, but pdsend is nowhere to be found. I thought it was part of Pd by default in Linux. I tried sudo apt-get install pdsend (or pd-pdsend), to no avail. This is making me very sorry. Help! Cheers, Pierre.

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Preset system in pd?
by flad chester 03 Oct '12

03 Oct '12

Hi, i was wondering if somebody have done any preset system for pd? are there any library or examples patches of this? I would like to store all the values of my sliders and the recover them interpolating between them. any hint would be appreciated F.

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Re: [PD] Fractional Delay in PD
by katja 02 Oct '12

02 Oct '12

On Tue, Oct 2, 2012 at 5:05 PM, Aaron Thompson <aaron.thompson(a)live.co.uk> wrote: > Hi Katja, > > Thanks for the reply. That seems to have fixed the problem, thanks! > > With regards to using the FIR as a fractional delay filter, i'm assuming the > delta float (which feeds to the coefficient calculations) should be decimal > values above a whole number delay? Ie, if the delay is calculated to be > 5.35273 samples for example, then the delta float sent to the FIR, should be > 0.35273, correct? In that case, should the value going to the delay be 5 > instead of 5.35273, or is it purely the nature of the filter to remove the > artifacts created from a non-integar delay? The FIR filter takes care of the time shift in between integer samples, the fractional part of delay indeed. > Also, can I ask if you've had any experience with building loss filters, for > example within a tubular waveguide the loss filter from viscothermal losses > along the tube? I understand the nature is basically a low pass filter with > a filter cutoff freq reducing the greater the distance, but interested as > you knew about fractional delay, as to whether you've created something of > this elk before. No, sorry I'm not so much into physical modeling. > Finally, if you do come across that sinc kernal, that would be great! See attached patch phaseshifter.pd. It is only for visualization but you could use the sinc kernel calculator for fractional delay FIR, if you apply a window to it (they say it should be a Kaiser window, not the easiest to calculate). Katja > > Kind regards, > Aaron > >> Date: Tue, 2 Oct 2012 00:52:00 +0200 >> Subject: Re: [PD] Fractional Delay in PD >> From: katjavetter(a)gmail.com >> To: aaron.thompson(a)live.co.uk >> CC: pd-list(a)iem.at > >> >> Hello Aaron, >> >> Tried your test patch and here it does not produce the noise you >> describe. If delay is set to absolute values larger than 1 it produces >> too large signal values leading to clipping and harmonics, but this is >> to be expected considering the way the patch is built. I noticed that >> resulting coefficients were not consistent because you did not use the >> trigger object in the calculation subpatches to organize the order of >> operations. >> >> With the trigger objects inserted, the FIR calculator seems to work >> well. I've added sliders in the subpatch to visually verify >> coefficient values, see attached. Also if you check with white noise >> as input signal, you can hear the spectrum is unaltered no matter what >> fractional delay. So, very much OK. Thanks for the patch! >> >> By the way I've once made a visualization of fractional delay with >> sinc kernel, if you're interested I can try to find it. >> >> Katja >> >> On Mon, Oct 1, 2012 at 10:32 PM, Aaron Thompson >> <aaron.thompson(a)live.co.uk> wrote: >> > >> > Hello community, >> > >> > Having trouble getting my lagrange 4-point interpolator to function >> > properly. Harmonics are being generated from somewhere, possibly due to the >> > amplitude exceeding FSD (DC offset?). When I then include it in my >> > waveguide, as soon as DSP is enabled, pd beeps, and then leaves crackly >> > noise/fuzz regardless of whether the patch is being fed an audio signal or >> > not. Remove the FIR filters, and it functions again as normal. >> > >> > Interested to know how others have achieved fractional delay filters >> > within pd, be it Lagrange or Thiran Allpass for example. >> > >> > Patch is attached, "FIRTest.pd" is the parent patch. >> > >> > Any help would be greatly appreciated. >> > >> > Aaron >> > >> > _______________________________________________ >> > Pd-list(a)iem.at mailing list >> > UNSUBSCRIBE and account-management -> >> > http://lists.puredata.info/listinfo/pd-list >> >

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32-bit/64-bit Pd-extended builds for all recent Ubuntu, Debian, Mint releases
by Hans-Christoph Steiner 02 Oct '12

02 Oct '12

I just added Pd-extended beta packages to apt.puredata.info for Ubuntu oneiric and precise, both 32-bit (i386) and 64-bit (amd64). That means that apt.puredata.info now has 32-bit (i386) and 64-bit (amd64) builds for every Ubuntu release since jaunty 9.04. This also covers all recent Linux Mint releases. There is also i386 and amd64 builds for Debian squeeze and wheezy. apt.puredata.info will also continue to have a whole bunch of older builds, all the way back to Debian/sarge and Ubuntu/dapper. Here are directions for how to use apt.puredata.info: http://puredata.info/docs/faq/debian Thanks to Max Neupert and Weimar University for setting up the new Debian/squeeze server that is running these new builds. .hc

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The HISSTools Impulse Response Toolbox: Convolution for the Masses. Call for port to Pd from Max
by Julian Brooks 02 Oct '12

02 Oct '12

Hi all, After the successful realisation of the [ipoke~] port that we recently undertook I would like to ask if anyone would be up for some more? This time it would be porting the HISSTools Impulse Response Toolbox. Some (cut & pasted) bumff: "HISSTools first release is a set of tools for working with convolution and impulse responses in MaxMSP. This set of objects addresses various tasks, including measuring impulse responses, spectral display from realtime data/ buffers, and buffer-based convolution, deconvolution and inversion." About HISS here: http://www.thehiss.org/ HISSTools 2012 ICMC paper and link to the Max d/l here: http://eprints.hud.ac.uk/14897/ Some chat on the max-list: http://cycling74.com/forums/topic.php?id=42403 Port is 3-clause-BSD. Last time was genuinely a fantastic example of collaborative working I thought, and a great example of our FLOSS community in action (I'm sure there's a paper in there for someone): good people with the appropriate skills creating super-tight code without ego or conflict. Ace. Big props to Matt Barber, Alex Harker, Charles (Chuck) Henry, P.A. Tremblay and especially Katja Vetter. Really hope some of the above have the energy to get into this again but this is an open call for anyone who has the time and interest in contributing to make it happen. All good wishes, Julian

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Pd-list October 2012