Pd-list April 2018

pd-list@lists.iem.at

62 participants
74 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 18 Jan '19

18 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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Re: [PD] Browser UIs for vanilla Pd patches
by Dan Wilcox 06 Aug '18

06 Aug '18

The "GUI faking" works at the moment and it's fast. I'm less inclined to believe adding a webbrowser layer and in-app socket communication is going to be performant on mobile devices. Even if we have 100 Ghz, native (iOS CoreGraphics, etc) will still be faster. What I *really* want is to simply ditch the GUI implementations and receive drawing commands directly from Pd. It could be "line here, rectangle there, text here" as it is now or it could be higher level as in "toggle here, object there" etc. If there was an abstraction layer replacing the TCL (maybe it looks/works like TCL in the end) wrapping the GUI, it would simply be easier to let Pd itself handle the logic and we just feed it input events. I know the Purr Data team have worked this out, so maybe we can look at there model or think of something at a different level. I have some ideas and, after having dug into the GUI code to fix zooming/sizing, I know there isn't really that much raw drawing TCL in the core. And most of what's there is pretty simple and repetitive. At this point, it would be great to solve this problem that preserves vanilla stability *and* provides for expanding GUI possibilities. It's totally possible and would lead to interesting stuff using libpd ... at the very least I would consider adding patch creation in PdParty. > On Mar 19, 2018, at 9:37 AM, pd-list-request(a)lists.iem.at wrote: > > I would be good to fold this functionality into PdDroidParty / PdParty > such that if an index.html exists in a droidparty project folder then > that will be used as the primary interface in place of the > gui-patch-faking that goes on at the moment. This will allow for much > richer user interfaces for Pd patches on mobile devices. Interested to > hear what you think of that, Dan. -------- Dan Wilcox @danomatika <http://twitter.com/danomatika> danomatika.com <http://danomatika.com/> robotcowboy.com <http://robotcowboy.com/>

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How to implement an @ argument in an external object?
by Alexandros 03 Aug '18

03 Aug '18

Being informed about the mailing list archive correct link, I searched for messages about this but didn't find something (it's possible I've missed something though). I'm writing an external and I want to use an @ argument (for example "@sync hard"). How does one implement this in C code?

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Re: [PD] Pd on Tiny Core Linux on Raspberry Pi
by Dan Wilcox 11 Jul '18

11 Jul '18

Out of curiosity, does the autotools build work as well? And yes, a simple embedded-only distort would be *very* useful as I had problems with performance turning Raspbian in the past. > On Feb 3, 2018, at 12:00 PM, pd-list-request(a)lists.iem.at wrote: > > Date: Sat, 3 Feb 2018 14:45:50 +0800 > From: Chris McCormick <chris(a)mccormick.cx <mailto:chris@mccormick.cx>> > To: "pd-list(a)lists.iem.at <mailto:pd-list@lists.iem.at>" <pd-list(a)lists.iem.at <mailto:pd-list@lists.iem.at>> > Subject: [PD] Pd on Tiny Core Linux on Raspberry Pi > Message-ID: <59001321-177a-dfc0-a19a-b0cb01e7f985(a)mccormick.cx <mailto:59001321-177a-dfc0-a19a-b0cb01e7f985@mccormick.cx>> > Content-Type: text/plain; charset=utf-8; format=flowed > > Hi all, > > This is fan mail for Pd on Tiny Core Linux onn Raspberry Pi. > > TCL is a 50 megabyte GNU/Linux distribution which is > immutable-by-default and runs very well on the Raspberry Pi. > > I managed to compile Pd and got it to output a test tone which is why I > am posting here. To do it yourself: > > * Install the alsa packages > * Install the compiletc package > * Compile Pd with `make -f makefile.gnu` inside the src directory > * Run `pd -nogui mypatch.pd` from the bin directory > > If you want to launch a Pd patch at startup add your command to > /opt/bootlocal.sh > > So far this seems like fertile ground as an alternative to the Raspbian > distribution with its multiple-gigabyte bloat. Seems perfect for > embedded Pd devices like guitar pedals, synths, and what-not. > > Tiny Core Linux does not use systemd. > > Cheers, > > Chris. -------- Dan Wilcox @danomatika <http://twitter.com/danomatika> danomatika.com <http://danomatika.com/> robotcowboy.com <http://robotcowboy.com/>

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polynomial pairs in lpc filter
by Simon Iten 11 May '18

11 May '18

hi list, this is more of a general DSP question... i am working on an LPC playback and mangling system for axoloti. i have most of it working and i am now trying to shift formants in the filter to change voice character. i found functions to convert reflection coefficients into polynomial pairs and presumably i should be able to shift filter frequencies in this representation of the data. unfortunately i have no clue how to do that. any hints, papers, code snippets etc. are very welcome. or if someone wants to take the time to explain, you are of course more then welcome thanks for any suggestions

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Piano roll sequence display
by William Brent 01 May '18

01 May '18

Has anyone done something like this using [struct]/[polygon], even just for sequence display purposes and not editable via mouse clicking/dragging? I did a quick search of the archives but haven't found anything. -- William Brent www.williambrent.com “Great minds flock together” Conflations: conversational idiom for the 21st century www.conflations.com

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feature request: system clipboard
by Max 30 Apr '18

30 Apr '18

I'd like to be able to copy parts of patches in between instances of Pd. Currently copy and paste only works within one Pd instance. m.

2 1

Display image inside graph-on-parent window?
by William Huston 30 Apr '18

30 Apr '18

Is there a way to display an image inside graph-on-parent window? Is there a way to display an arbitrary image of common filetypes (gif, jpeg, png, tif) on a canvas? I've checked the list archives. I tried [image] but couldn't get it to work. I can't seem to type a Windows-MSDOS style pathname which contains backslashes... I get "Keycode 92 dropped". (How annoying! is there a good reason for this?) Anyway, I would really like a way to display an image inside the graph-on-parent window to help people understand the controls. Bonus points if I can change the image with a message. Thanks! BH -- William Huston: WilliamAHuston(a)gmail.com Binghamton NY *Public Service Mapping / Videography / Research* Blog <http://WilliamAHuston.blogspot.com> -- Facebook <http://facebook.com/billhuston> -- Twitter <http://twitter.com/WilliamAHuston>-- Youtube <https://www.youtube.com/channel/UCGijK1amWOLglT3YeTyEBNQ?sub_congfirmation=1> Document collections: VirtualPipelines <http://TinyURL.com/VirtualPipelines> -- BHDCSDimockArchive <http://bit.ly/BHDCSDimockArchive> Please support my work: TinyURL.com/DonateToBillHuston

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Normaliizing sinus mix
by João Pais 30 Apr '18

30 Apr '18

Hello list, I was curious about the following math issue: when defining a waveform using "sinesum 0.8 0.2 0.1", what would be the formula to normalize the wave to 1? I tried adding all the values (=1.1 in this case), getting the inverse value and multiplying the list with that. Although the sum of the values is 1, the resulting wave isn't normalized to 1 the same way the "normalize 1" command would do it. So I imagine some higher math is required? Also, is the process the same if the wave components are harmonic or not (that is, multiples of the base frequency)? Best, jmmmp

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Pd-list April 2018