Pd-list September 2017

pd-list@lists.iem.at

58 participants
76 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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William Brent's [convolve~ ] dekenized
by Roman Haefeli 17 Jan '19

17 Jan '19

Hey For those interested: I took the liberty to package William Brent's [convolve~ ] external and make it available through Deken. [convolve~ ] does real-time partitioned convolution where the partition size and thus the resulting delay can be set. http://williambrent.conflations.com/pages/research.html Roman P.S.: Didn't have the chance to test on macOS. I'm happy about reports.

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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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Store and delete lines in [textfile] ?
by Jérôme Abel 13 Mar '18

13 Mar '18

Hi, Is it possible to store and delete lines in the [textfile], like [cyclone/coll] ? It could be an interesting feature to use it as a "multi-data" preset storage (symbol, float, integer) for instance. With [coll] it is very handy, but I though about to implement it into Pd Vanilla. + -- Jérôme Abel http://jeromeabel.net http://reso-nance.org

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Re: [PD] how to change the cursor icon (tcl)
by Federico Camara Halac 07 Mar '18

07 Mar '18

Hi Liam (back to the list now ;) You can trigger the cursor change from a subpatch or abstraction, it doesn't matter, as long as you are in the same pd instance and the canvas_name symbol for the target is visible. I attached a patch where this is working from inside an abstraction with a metro (needs hcs). I don't know of any other way to change the cursor type other than sysgui and *configure -cursor*. Also I don't know what you mean by pdsend finished. I guess in the end this might be system dependent and probably a tcl version thing that I simply don't know ;) all my knowledge here comes from hacking through this amazing code either I don't understand your problem or itseems to be working as far as i can see. cheers fd On Tue, Sep 26, 2017 at 3:28 PM, Liam Goodacre <liamg_uw(a)hotmail.com> wrote: > Yeah those are the kinds of problems that I've been facing. Ultimately, I > want to trigger the change from a hidden canvas, ie. inside a canvas. I'm > also finding that it seems to work only if triggered by a "click" (of a > bang or message box). Trying to automate the process, ie. with a metro, > mysteriously fails. (I think this is something to do with the "pdsend > finished" message I mentioned previously). > > Is there any way around these problems, or is this a lost cause? > ------------------------------ > *From:* Federico Camara Halac <camarafede(a)gmail.com> > *Sent:* 26 September 2017 19:46 > *To:* Liam Goodacre > *Subject:* Re: [PD] how to change the cursor icon (tcl) > > Hi Liam, using hcs, I imagine you can use something like this, but it > doesn't seem to work all the time. The canvas needs to be visible. Moving > the mouse in an out of the canvas triggers the new cursor on mac at least. > > [bang( > | > [canvas_name] ( the target canvas ) > | > [$1 configure -cursor *hand*( (or whatever cursor name > <https://www.tcl.tk/man/tcl8.4/TkCmd/cursors.htm>) > | > [sys_gui] > > On Tue, Sep 26, 2017 at 1:33 PM, Liam Goodacre <liamg_uw(a)hotmail.com> > wrote: > >> I'm looking for a reliable way to change the cursor icon, ie. from an >> arrow to dot or something else. >> >> >> The [cursor] object in the hcs library does just this, but it gives a >> nasty tcl error when triggered inside an abstraction. I don't imagine that >> this library will be updated any time soon, so I've been looking for >> alternatives. >> >> >> There ought to be a raw tcl messages which can be sent to [sys_gui] (also >> hcs library). I've found one which is promising: >> >> >> set ::cursor_runmode_nothing "left_side" >> >> >> But I'm running into difficulties with this also, as it seems to expect a >> "pdsend xxx finished" message, where xxx is some hexadecimal that I can't >> work out. >> >> >> Does anybody know how to make this work? >> >> >> Liam >> >> _______________________________________________ >> Pd-list(a)lists.iem.at mailing list >> UNSUBSCRIBE and account-management -> https://lists.puredata.info/li >> stinfo/pd-list >> >> > > > -- > http://fdch.github.io/tv > -- http://fdch.github.io/tv

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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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Review of expr 0.55 (released in 0.48) and a Pull Request
by Alexandre Torres Porres 17 Dec '17

17 Dec '17

Hi Shahrokh and Miller. I've sent this before, but now I'm sending again with a more explicit subject and also a Pull Request. I've tested the new expr (v0.55 released in pd 0.48) and I still have some remaining bugs to report. These are bugs I really think should be fixed, and some suggested feature requests. One of the bugs is plain simple, the fact that fexpr~ doesn't allow a float input in its left inlet. That doesn't seem intentional, by the way, because [expr~] allows it. Anyway, here's a simple Pull Request I created about it, see if it's cool: https://github.com/pure-data/pure-data/pull/219 cheers

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Pd-list September 2017