Pd-list April 2010

pd-list@lists.iem.at

143 participants
284 discussions

OS X 10.6: unplugging headphones crashes Pd
by Mathieu Bouchard 04 Apr '10

04 Apr '10

> Referenced from: > /Applications/Pd-0.42.5-extended-20100401.app/Contents/Resources/Scripts/../bin/../../lib/libgmerlin_avdec.1.dylib > Reason: image not found Gem: can't load library I got a similar report from one of my students a while back : /Applications/Pd-0.42.5-extended-20100221.app/Contents/Resources/extra/Gem/Gem.pd_darwin: dlopen(/Applications/Pd-0.42.5-extended-20100221.app/Contents/Resources/extra/Gem/Gem.pd_darwin, 10): Library not loaded: /sw/lib/libfaad.0.dylib Referenced from: /Applications/Pd-0.42.5-extended-20100221.app/Contents/Resources/Scripts/../bin/../../lib/libgmerlin_avdec.1.dylib Reason: image not found Gem: can't load library so, did you chop off the part that said that it was missing libfaad.0.dylib from /sw/lib ? do you even have a /sw folder (in "Macintosh HD") ? so, why would it look there ? looks like something dependent on FINK, as if had compiled something using FINK and then forgot to include a dylib component in the .app before trying to link Gem. _ _ __ ___ _____ ________ _____________ _____________________ ... | Mathieu Bouchard, Montréal, Québec. téléphone: +1.514.383.3801

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Detect silence inArray and resize
by guilherme lunhani 04 Apr '10

04 Apr '10

Hi, I'm Trying to do this: after recording a sound event in array (the initial size of this array is equal to samplerate*time in seconds), I want to resize this array approximately equal of the duration of this sound event (as a sttacato event with fff in trumpet). In other words, I want to detect in a array with size X, a lot of amount of samples with values approximately zero, this amount with size Y (where Y is 0<Y<X) , and resize this array with new size X-Y I'm trying to program it or look on the net for solutions, but without sucess. anyone have any idea how to do this? Best Guilherme

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24 bit / 96 k issue
by David Schaffer 03 Apr '10

03 Apr '10

Hi there, I'm trying to use 96 k/24 bits WAV file in pd for the first time and something weird is happening: when I open such a file, I get an "no such oject" error in the console, althou I haven't put any unknown object in my patch, then, some GUI elements freeze (knobs, faders...) and I can't use my patch anymore (but the sound seems to play). "Find last error" doesn't lead me anywhere. Can anyone telle me what's going on or explain me how one to deal with 96k 24 bits sounds in Pd (setup changes, soundcard settings...) I've noticed that switching pd to 96k mode in Pd doesn't affect my ASIO soundcard's settings (it stil shows 16bits, 44100 hz) so I'm kind of mixed up... Thank you D.S http://www.flickr.com/photos/schafferdavid/ http://audioblog.arteradio.com/David_Schaffer/

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strange colors with pix_record
by Max 03 Apr '10

03 Apr '10

Hi List, i wonder why i get these strange colors when using pix_record with GEM ver: 0.92.2 compiled: Jan 20 2010 on OS X 10.6.3 Any Ideas? this is grayscale in GEM but instead it is quite blue in the recorded quicktime.

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Re: [PD] OS X GUI properties menu takes a long time to appear
by Ben Baker-Smith 03 Apr '10

03 Apr '10

>Yeah, I see it too. I haven't been able to pin it down, it is driving >me nuts. Its only the first time you open a properties panel. > >.hc Same here. Only happens the first time. It took much longer on my old PPC, but that machine was just slower in general. -Ben

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OS X GUI properties menu takes a long time to appear
by Martin Dupras 03 Apr '10

03 Apr '10

Hi, I'm running 0.41.4 extended on OS X 10.5. When I invoke the properties dialog for any GUI object, I get the pinwheel for about 20 seconds before it appears. If I recall, this as also happening on the same machine with a prior versions of PD. Is this a known phenomenon? Cheers, - martin

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Re: [PD] pd~ and DIO errors
by tim vets 03 Apr '10

03 Apr '10

2010/4/3 tim vets <timvets(a)gmail.com> > Hi Patrick, > > 2010/4/3 patrick <puredata(a)11h11.com> > > hi tim, >> >> just to be sure, do you use the -rt flag when starting pd? also, try to >> run everything (jack, pd) in root (just to see if the glitches is the cause >> of a limitation). >> >> > Yes, I start pd with "pd -rt -jack" > I tried your suggestion, running pd as root, but got no better results. > Some parts in the patch contain several [sigmund~] and [bonk~] objects, > which seem quite heavy, so I'd like to put those in a separate pd process, > to make use of the other processors on the machine... > I even get DIO errors when I load my abstraction in a pd~ object and don't > switch~ it on, whereas when loading it as a regular abstraction, switch~-ing > it off stops the DIO errors. > Thanks, > Tim > > > > > pat >> > >

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Re: [PD] Spectral Shifting
by richard duckworth 03 Apr '10

03 Apr '10

Hi Alex, been using additive synthesis implemented in pd to create bespoke timbres to fit xenharmonic scales. It has taken a while and is not finished yet as I've had problems with creating polyphonic ad syn instruments though I'm on the right track. I constructed a proof-of-concept model in Csound a few years back, but wanted a system more suited to live performance and on-the-fly tweaking, hence the pd implementation. What I've got so far is a monophonic ad syn instrument w/ control over the pitch and amplitude of each partial. An extra feature is a separate envelope for each partial to avoid tedium. Ultimately, there will be active, changing control over all of the partials, and a polyphonic version. Part of the machine is a scale generating interface triggered by input events such as MIDI. I don't use conversions from MIDI as some do, the pitches are derived from an expression block - it calculates the correct scale steps for the xenharmonic scale. Right now, there are only ET scales in there - if the user wants a 7-tet scale she/he simply places 7 in a number box and the machine does the rest. The timbre for the scale is then derived in the Setharian way - decide which scale steps should be consonant and manipulate the partials to suit your system. By doing the sums, the partial frequencies are arrived at, plugged into the adsyn partial arguments with a massive message box, and a timbre suited to a non-12 tet is the result. It's hit-or-miss, and I've not been able to fully assess the new scale-timbre pairs due to a lack of polyphony. It's coming along though....... Rich Duckworth Lecturer in Music Technology School of Music House 5 Trinity College Dublin 2 Ireland It's the most devastating moment in a young mans life, when he quite reasonably says to himself, "I shall never play The Dane!" --- On Sat, 3/4/10, pd-list-request(a)iem.at <pd-list-request(a)iem.at> wrote: From: pd-list-request(a)iem.at <pd-list-request(a)iem.at> Subject: Pd-list Digest, Vol 61, Issue 14 To: pd-list(a)iem.at Date: Saturday, 3 April, 2010, 10:40 Send Pd-list mailing list submissions to pd-list(a)iem.at To subscribe or unsubscribe via the World Wide Web, visit http://lists.puredata.info/listinfo/pd-list or, via email, send a message with subject or body 'help' to pd-list-request(a)iem.at You can reach the person managing the list at pd-list-owner(a)iem.at When replying, please edit your Subject line so it is more specific than "Re: Contents of Pd-list digest..." Today's Topics: 1. Re: Spectral Shiffting (Jaime Oliver) 2. Re: Spectral Shiffting (Andrew Faraday) 3. Re: strange colors with pix_record (Max) 4. pd~ and DIO errors (tim vets) 5. Re: pd~ and DIO errors (patrick) 6. Re: Spectral Shiffting (hard off) 7. Re: tabread4~ "broken" interpolation algorithm - was Re:, Max Smoother Audio than Pd? (Matteo Sisti Sette) ---------------------------------------------------------------------- Message: 1 Date: Fri, 2 Apr 2010 15:08:40 -0700 From: Jaime Oliver <jaime.oliver2(a)gmail.com> Subject: Re: [PD] Spectral Shiffting To: Alexandre Porres <porres(a)gmail.com> Cc: pd-list(a)iem.at Message-ID: <i2x616283881004021508k5a2751fct46ba5c19e20cb21c(a)mail.gmail.com> Content-Type: text/plain; charset="iso-8859-1" frequency shifting and then pitch shifting by the same amount in hertz will compress or expand a spectrum around a particular frequency (which could or could not be the fundamental...) J On Fri, Apr 2, 2010 at 1:05 PM, Alexandre Porres <porres(a)gmail.com> wrote: > >I know I read the spectral mapping technique he uses, > >but I didn't really understand how it works. > > me neither, guess he didn't really explained it wel... > > cheers > > > 2010/4/2 Charles Henry <czhenry(a)gmail.com> > > There's a method of tuning partials that William Sethares uses in his >> compositionss and he talks about it in his book Tuning Timbre Spectrum >> Scale. >> >> Specifically, he was also using inharmonic instruments which would be >> arranged into consonant scales, and the similar problem of using >> arbitrary scales with inharmonic spectra to fit with least dissonance. >> I know I read the spectral mapping technique he uses, but I didn't >> really understand how it works. >> >> On Fri, Apr 2, 2010 at 2:38 PM, Alexandre Porres <porres(a)gmail.com> >> wrote: >> > Hi folks, >> > I'd lke to distort a sound spectrum by transposing partials the way I >> want. >> > Like making the spectrum more inharmonic or harmonic. >> > Anyone done something similar? >> > What kind of processing should I use? >> > I was thinking that maybe a Phase Vocoder, where you could control the >> > frequency separately, huh!?!? Anyone did this by the way? >> > thanks a lot >> > Alex >> > _______________________________________________ >> > Pd-list(a)iem.at mailing list >> > UNSUBSCRIBE and account-management -> >> > http://lists.puredata.info/listinfo/pd-list >> > >> > >> > > > _______________________________________________ > Pd-list(a)iem.at mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > > -- Jaime E Oliver LR www.jaimeoliver.pe 858 750 0924 (cel) 858 202 1522 (home) 9168 Regents Rd. Apt. G La Jolla, CA 92037 USA

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Re: [PD] tabread4~ "broken" interpolation algorithm - was Re:, Max Smoother Audio than Pd?
by Matteo Sisti Sette 03 Apr '10

03 Apr '10

> It occurs to me that there exists one very obvious function for which > the squared error is minimized for a 4-point interpolator. 4-point > interpolator impulse functions have to be 0 outside the interval > [-2,2]. > > So, > E=|f(x)-sinc(x)|^2 is minimized when > > f(x)={sinc(x) -2<x<2 , 0 elsewhere I may be missing something but I'm afraid the E in your formula is not the error that is supposed to be minimized. The ideally interpolated signal (which is the one in reference to which the error has to be minimized) is not just a sinc: it is the sum of an infinite series of sinc's centered at the sampled points and scaled with the sampled values. (I won't try to write it in a latex-like fashon, I would certainly get it wrong - not because of latex syntax, I mean I would get it wrong even if I tried to write it down manually) Please correct me if I am wrong -- Matteo Sisti Sette matteosistisette(a)gmail.com http://www.matteosistisette.com

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Spectral Shiffting
by Alexandre Porres 03 Apr '10

03 Apr '10

Hi folks, I'd lke to distort a sound spectrum by transposing partials the way I want. Like making the spectrum more inharmonic or harmonic. Anyone done something similar? What kind of processing should I use? I was thinking that maybe a Phase Vocoder, where you could control the frequency separately, huh!?!? Anyone did this by the way? thanks a lot Alex

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Pd-list April 2010