Pd-list October 2013

pd-list@lists.iem.at

102 participants
122 discussions

developer needed to port resonators~ to PD for ARM
by Ali Momeni 09 Oct '13

09 Oct '13

hello friends, some of you may be aware of an old Max object named "resonators~", from CNMAT: http://cnmat.berkeley.edu/patch/4019 i'm in search of a pd developer who's up for porting the object to pd. we have the source code and would like for it to run on ARM processors (i.e. RaspberryPi's, Udoo's, etc). i imagine that for someone with experience in writing audio externals for pd, it's a relatively easy process. if interested, please kindly contact me off the list. greetings, ali

1 0

declare and abstraction
by Cyrille Henry 08 Oct '13

08 Oct '13

Hello, I'm trying to setup a project organised in folder like this : projet/ dir1/ abstraction1/ foo patch1.pd dir2/ abstraction2 bar patch2.pd patch.pd in patch1.pd, i've got a declare -path abstraction1 so that i can use the foo abstraction same in patch2 : declare -path abstraction2 to use the bar abstraction patch1 and patch2 are autonomous. now, in patch.pd, I want to use patch1 and patch2. when using declare -path dir1, I can use patch1, but the declare in patch1 is relative to the projet directory, not to the dir1, so foo is not found. when using dir2/patch2, it's the same problem. i would like that patch1 and patch2 deal with the declaration of path for abstraction there are using. And i would like to be able to use patch1 and patch2 in patch, without having to add declaration. i know that there is a warning in declare help not to do that. so, what is the vanilla way to organised project like that? for now, the solution i found is to organised things like this : projet/ dir1/ abstraction1/ foo patch1.pd dir2/ abstraction2 bar patch2.pd all/ patch.pd and using declare -path ../patch1/abstraction1 in patch1. but i don't really like that. thanks cheers Cyrille

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Alternative to pdp_colorgrid?
by Antonio Roberts 08 Oct '13

08 Oct '13

Hi pd list, Is there an alternative object to pdp_colorgrid? I believe it was in pidipi (which has removed in the latest pdextended) and also in pdvjtools (doesn't compile). It would be great to have it back or have an alternative! Thanks Antonio -- ============================ antonio(a)hellocatfood.com http://www.hellocatfood.com ============================

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iem_tab can't create object
by Jack 07 Oct '13

07 Oct '13

Hello, I have a problem to use iem_tab library (tab_copy). I know about array get/set but my old patch use tab_copy. iem_tab compile fine. When i open externals/iem/iem_tab/tab_copy-help.pd, i get in pd console : tab_copy src dst ... couldn't create tab_copy src dst ... couldn't create In my directory externals/iem/iem_tab/, i have iem_tab.pd_linux My configuration : Pd 0.45.0test 2 ++ Jack

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$1 inside a message is not saving data ?
by Фывапр Олджэвич 07 Oct '13

07 Oct '13

Dear PD-list . I found that in PD-extended 42.5 - the $1 inside a message is not saving data. Is it a bug ? see patch below. \\\\\\\\\\ #N canvas 939 165 700 300 10; #X msg 139 127 0 \$1; #X obj 139 175 print; #X floatatom 111 74 5 0 0 0 - - -; #X obj 181 73 bng 15 250 50 0 empty empty empty 17 7 0 10 -262144 -1 -1; #X text 117 48 1; #X text 183 52 2; #X text 216 112 Why message is not saving data in \$1 ?; #X connect 0 0 1 0; #X connect 2 0 0 0; #X connect 3 0 0 0; \\\\\\\\\\\\\\\\\

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http://wiki.puredata.info/ ???
by Py Fave 07 Oct '13

07 Oct '13

hi list http://wiki.puredata.info/ what is this redirection ? the adress seems bizarre. is there something there? i clicked on pdpedia link in help patch for [pd ] and it brought me there..

2 1

[biquad~] as cyclone's [allpass~]?
by Alexandre Torres Porres 07 Oct '13

07 Oct '13

hi there, i see the biquad's coefficients can be set as an allpass filter, generated by frequency and "Q" parameters. But can it do the same as cyclone's [allpass~] filer? If yes, them how since the parameters for [allpass~] are different (delaytime and such). One way or another, I guess that my real question is: how to implement [allpass~] from vanilla objects? thanks

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[biquad~] as max's phaseshift? (was [biquad~] as cyclone's [allpass~]?)
by Alexandre Torres Porres 07 Oct '13

07 Oct '13

Anyway, next on my list is finding out how to implement max's [phaseshift~], which is also an allpass filter. There's no Pd clone for it so it seems, right? Well, it doesn't really what it is other than a 2nd order filter. From that I could think you can generate it with [biquad~], but the phase response given in phaseshift's help file suggest otherwise. any contributions welcome thanks a lot 2013/10/5 Alexandre Torres Porres <porres(a)gmail.com> > but this way it won't be the same as cyclone's [allpass~], the way I did > it is equivalent to it (and max's). > > cheers > > > 2013/10/3 Chris Clepper <cgclepper(a)gmail.com> > >> You only need one delay line for the allpass. >> >> feedforward = input * -gain >> feedback = delayout * gain >> delayin = input + feedback >> output = delayout + feedforward >> >> http://www.spinsemi.com/knowledge_base/effects.html#Reverberation >> >> >> On Thu, Oct 3, 2013 at 11:29 AM, Alexandre Torres Porres < >> porres(a)gmail.com> wrote: >> >>> i hope i guess i figured it out on how to implement it with delay lines. >>> see attachment. And I realize you can't do this with [fexpr~] or [biquad~] >>> because the sample delay length is kinda big for that, right? >>> >>> cheers >>> >>> >>> 2013/10/3 Alexandre Torres Porres <porres(a)gmail.com> >>> >>>> cool, but do you know how to implement cyclone's [allpass~] with it? >>>> >>>> It's really unclear to me what is the relation of this pass filter with >>>> the one you can generate with biquad coefficients, or with raw poles/zeros >>>> objects for that matter. >>>> >>>> Well, one way or another, it's also unclear to me how to do it with >>>> delay lines. >>>> >>>> seems that it is related to a comb filter, right? >>>> >>>> cheers >>>> >>>> >>>> 2013/10/2 Chris Clepper <cgclepper(a)gmail.com> >>>> >>>>> Allpass for reverb is easy to do with delwrite~ and vd~. I used 32 of >>>>> them today to recreate a famous 'deep space' reverb. >>>>> >>>>> >>>>> On Wed, Oct 2, 2013 at 1:53 AM, Alexandre Torres Porres < >>>>> porres(a)gmail.com> wrote: >>>>> >>>>>> hi there, i see the biquad's coefficients can be set as an allpass >>>>>> filter, generated by frequency and "Q" parameters. But can it do the same >>>>>> as cyclone's [allpass~] filer? If yes, them how since the parameters for >>>>>> [allpass~] are different (delaytime and such). >>>>>> >>>>>> One way or another, I guess that my real question is: how to >>>>>> implement [allpass~] from vanilla objects? >>>>>> >>>>>> thanks >>>>>> >>>>>> _______________________________________________ >>>>>> Pd-list(a)iem.at mailing list >>>>>> UNSUBSCRIBE and account-management -> >>>>>> http://lists.puredata.info/listinfo/pd-list >>>>>> >>>>>> >>>>> >>>> >>> >> >

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Re: [PD] Legal restrictions for apps
by Dan Wilcox 06 Oct '13

06 Oct '13

My approach with PdParty so far is: - GPL source code is incompatible with the Apple App Store due to the static linking requirement which means you cannot distribute GPL libs as dynamic libs which can be updated or replaced by the user - GPL patches are fine, they are text files which are not compiled into your app binary so can be freely replaced, I expose all of the GPL patches I use to the user so they can modify or update them to satisfy the distribution requirement of the GPL - I leave out [expr] & [expr~] for now. The license in the expr src folder is LGPL, but the license in the source headers is GPL and the following is printed to console when first loading the external: "expr, expr~, fexpr~ version 0.4 under GNU General Public License ". I will leave it out until those parts of the code are explicitly changed. If this has already happened, then we need to merge in those changes to libpd. So far, as Miller suggests, I've been replacing [expr] with regular math objects. On Oct 3, 2013, at 4:12 AM, pd-list-request(a)iem.at wrote: > From: Tony Hillerson <tony.hillerson(a)gmail.com> > Subject: Re: [PD] Legal restrictions for apps > Date: October 3, 2013 3:17:37 AM GMT+08:00 > To: Miller Puckette <msp(a)ucsd.edu> > Cc: pd-list(a)iem.at > > > I agree that it seems like there's there's no prohibition on distributing LPGL objects, but it seems like unless I fork libpd and remove that extern I'm required to make my object code available as well. Is that other's understanding also? > > -- > Tony Hillerson > > On Wednesday, October 2, 2013 at 13:04 PM, Miller Puckette wrote: > >> Hi Tony - >> >> I'm not sure, but I always thought you can distribute LGPL objects within >> commercial (closed-source) software. If I'm wrong about that, the next >> step would be to re-rwite the patch without using expr~ and not include >> expr~ in the product. (I keep it as an extern to make that easy to do.) >> >> cheers >> Miller >> >> On Wed, Oct 02, 2013 at 11:32:21AM -0600, Tony Hillerson wrote: >>> Hey guys, >>> >>> I'm wondering about the restrictions for using Pure Data patches in Android and iOS apps with libpd. I have a rudimentary understanding that if I distribute software that's released under the GPL or LGPL I need to make available my source or at least the object files of my app. >>> >>> As I understand it, from the vanilla distribution contains [expr~], which is LGPL. If I use libpd, I'm distributing it, and I need to make the source or the object files of my apps available. Is that correct? Are there any paid apps that use pd and distribute through Google Play or Appstore? >>> >>> -- >>> Tony Hillerson >> >>> _______________________________________________ >>> Pd-list(a)iem.at mailing list >>> UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list -------- Dan Wilcox @danomatika danomatika.com robotcowboy.com

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reading tables indices with liner interpoation
by peiman khosravi 05 Oct '13

05 Oct '13

I'm trying to figure out if there is an object to read table indices with linear interpolation? Other than linear_path (Gem). Or perhaps there is a simpler way of doing it? Many Thanks Peiman *www.peimankhosravi.co.uk || RSS Feed<http://peimankhosravi.co.uk/miscposts.rss> || Concert News <http://spectralkimia.wordpress.com/>*

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Pd-list October 2013