Pd-list June 2017

pd-list@lists.iem.at

57 participants
78 discussions

MIDI specifications for Multidimensional Polyphonic Expression (MPE) in Pd
by Alexandre Torres Porres 26 Oct '23

26 Oct '23

some new objects for MPE Midi is on Max's new update, just googled it to see what it was http://expressiveness.org/2015/04/24/midi-specifications-for-multidimension… wonder if you guys know anything about this and if anyone would be into bringing this to Pd. cheers

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repackaging externals on Deken
by Liam Goodacre 20 Apr '18

20 Apr '18

Hi all I'm starting to think about how to distribute the Context sequencer when it is ready (hopefully the day is not very far away). Context is an abstraction, but it relies heavily on externals*. Ideally, I want it up on Deken, but I'm not sure what to do about the external packages. Is it feasible / acceptable to bundle all the externals I'm using into a folder and distribute them along with the main Context package? I'm hoping that this way the whole thing could be downloaded and installed in one click, but I want to make sure that there aren't any complications or license issues. Has external repackaging been done before? *The external libraries I'm using are: -cyclone -zexy -iemguts (including initbang) -moocow -flatgui -list-abs

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Re: [PD] soundtouch~ for ARM (Raspberry Pi / RPi)
by haima 05 Apr '18

05 Apr '18

Thanks! Re: the "à": I cheated - copy and paste... hahah The soundtouch~.pd_linux file you compiled works great here on my Pi, thanks! Just out of interest, ofter modifying the Makefile to be correct for the ARM, what were the other steps required to compile it? I can't figure out what to do with a Makefile... Cheers! and +à :) > Message: 2 > Date: Wed, 20 May 2015 23:03:58 -0400 > From: puredata(a)11h11.com > To: pd-list(a)lists.iem.at > Subject: Re: [PD] soundtouch~ for ARM (Raspberry Pi / RPi) > Message-ID: > <20150520230358.Horde.k0FQZnmx7yRVXUsen0AmIbA(a)courrier.privatedns.com> > Content-Type: text/plain; charset=utf-8; format=flowed; DelSp=Yes > > Hi Haima, > > +1 for finding the "à" on your keyboard (or did you "cheat"), but it's > not my name or nick :) à+ means see "you later" in french. anyway > here's the download link again: > https://dl.dropboxusercontent.com/u/1455235/stuff/soundtouchrpi.zip > > Cheers~ > > >

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Paper about vcf~ implementation?
by Nicolas Danet 24 Mar '18

24 Mar '18

Hi, I try to understand the code of the [vcf~] filter. Is there any paper or discussion somewhere that could enlighten me about the mathematics used? For instance what kind of filter is it *precisely*. A one-pole resonant filter (as it is noted in the Puckette's book)? Note that i'm not an expert at all in that kind of things.

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Re: [PD] fft~ bug in Pd-0.46-7-64bit.app on OSX
by Robert Esler 31 Dec '17

31 Dec '17

As far as I know Pd stopped using the mayer fft library in .46, which is probably why this is new behavior. I only get what you’re experiencing with a block size of 8. Otherwise, it seems to perform as expected. To really understand if this is a bug or not is to know which fft library is being used for OS X. My guess is it’s the OOURA but it’s not clear from looking at [fft~] object code that comes with distribution. You could also download the old library and recompile Pd, but I doubt it’s worth it. -Rob ------- Hi list, There's either a major bug in the [fft~] objects in Pd-0.46.7 (64bit OSX) or I'm going crazy. I'd love to see if others can reproduce it. Basically, for [block~] sizes less than 32 bits, [fft~] doesn't perform -- it just passes the signal through unchanged. [ifft~] does the same. The [rfft~]-[rifft~] is a little more complicated -- it passes signal through but zeroes out the last N/2 for [block~] sizes less than 64. See the attached patch, which only shows [fft~]. The saved contents of the tables on opening are the results for [block~ 8] on my machine, for quarter-nyquist at 44100. I've never seen this before in other versions of Pd. Anyone else get this behavior? Matt

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Re: [PD] efficient approximation of trig functions for hi pass formula (was: could vanilla borrow iemlib's hi pass filter recipe?)
by Dan Wilcox 20 Dec '17

20 Dec '17

I think a core commenting sprint would be *very* helpful, specially to those of us (me) who would like help in understanding the black magic inside. -------- Dan Wilcox @danomatika <https://twitter.com/danomatika> danomatika.com <http://danomatika.com/> robotcowboy.com <http://robotcowboy.com/> > On Oct 19, 2016, at 12:57 PM, pd-list-request(a)lists.iem.at wrote: > > That is an important question. Pd code is full of clever tricks and > bit hacks for dsp efficiency. What is the origin of q8_rsqrt(), why > and how does it work? What about PD_BIGORSMALL() in m_pd.h? And the > mysterious UNITBIT32 number in d_osc.c? Ideally such code should be > commented not only to denote its function (if necessary) but also to > reference the origin so you may be able to find info.

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retrigger [tabread4~] sampler without clicks
by Federico Galland 17 Dec '17

17 Dec '17

Hi, I'm working on a granular sampler borrowing parts of the patch on pd-tutorial (http://www.pd-tutorial.com/english/ch03s07.html). Everything works smoothly except for one little annoying problem. If I fire the sample before the last one is through, sometimes I get a click at the beggining of the playback. This is happening on a percussive sound (rapid envelope attack) so I'm guessing it's got something to do with [tabread4~] failing to interpolate between whatever the last amplitude value was and the first wavetable value. This http://crca.ucsd.edu/~msp/techniques/latest/book-html/node63.html can probably be used to solve my problem, but I can't figure out how (or where in the patch) I should implement it. Any clues would be greatly appreciated. Thanks a lot, and have a good one. ps. I tried to comment the patch to make it understandable. It is still, however a work in progress. Let me know of any questions. -- Federico Galland <federicogalland(a)gmail.com>

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[PD-announce] PuREST JSON 1.4.2 "Argo in shipyard" released
by Thomas Mayer 18 Oct '17

18 Oct '17

Hello, I am happy to announce the release of PuREST JSON 1.4.2, code name: Argo in shipyard. This release is a minor update and contains changes to the build scripts and documentation. This version also has a Mac OS X release available via deken. PuREST JSON is a library for working with RESTful HTTP webservices, and JSON data. Authentication and authorization for webservices are available with basic HTTP auth, cookie authentication, and OAuth. As an example for OAuth authenticated webservices, a Twitter client is included. This release is available from deken for Windows, Linux i386, and Linux x86_64 with the name "purest_json" Changes since 1.4.1: - Update of build scripts and documentation - Usage of CI for build See the full changelog at https://github.com/residuum/PuRestJson/blob/master/Changelog.txt Github repository: https://github.com/residuum/PuRestJson Source code packages: https://github.com/residuum/PuRestJson/releases Full documentation: https://github.com/residuum/PuRestJson/wiki Build instructions for all platforms: https://github.com/residuum/PuRestJson/wiki/Compilation Have fun, Thomas -- "I'm a white male, age 18 to 49. Everyone listens to me, no matter how dumb my suggestions are." (Homer Simpson in: Lisa vs. Malibu Stacy) http://www.residuum.org/ _______________________________________________ Pd-announce mailing list Pd-announce(a)lists.iem.at https://lists.puredata.info/listinfo/pd-announce

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hexloader incorporated into vanilla?
by Alexandre Torres Porres 31 Aug '17

31 Aug '17

Howdy, don't think this has ever been discussed... sorry if it had. So, we need externals with non-alphanumeric names to be loaded into a multi-object library, loaded via start up. If you have them as a set of single-object binaries, the only option seems to be [hexloader] (a third party external). Hence, in order to reduce dependency on third party externals, would there be any opposition in the idea of incorporating the hexloader code into Pd Vanilla? An alternative could be 'deken' handling dependencies, so if you download one external pack it would also download a dependency such as 'hexloader'. thoughts? cheers

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[comport] interpreting byte 13 as 10
by Alexandros Drymonitis 21 Aug '17

21 Aug '17

I can't send the number 13 from the Arduino to Pd using Arduino's Serial.write() function. Instead I'm receiving a 10. Does this have anything to do with the fact that ASCII 10 is a new line feed and ASCII 13 is the carriage return? Maybe [comport] is interpreting both values as the new line feed, just a thought. A work around this is to use Serial.print((char)13); in the Arduino code. This did work with an Arduino UNO and my laptop, running Debian Jessie XFCE, but it failed with a Teensy 3.6 and an Ordoid-U3, running an Ubuntu 14.04 LTS image. Both systems run Pd-0.47-1 with [comport] installed via apt-get.

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Pd-list June 2017