Pd-list May 2006

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147 participants
245 discussions

Re: [PD-announce] pd-list now part of pd-announce! (2/3)
by IOhannes m zmoelnig 30 May '06

30 May '06

of course i forgot to subscribe the pd-list to pd-announce... however, this should now be fixed. IOhannes m zmoelnig wrote: > after a grace period of several weeks and some positive replies i will > now make the switch to add pd-list to the pd-announce subscribers. > > This means that each email that is sent to Pd-announce will > automatically pop up at Pd-list. > > People who are currently subscribed to Pd-list (with mail-delivery > enabled) will have mails from Pd-announce disabled. This is a one time > action (happening immediately after i sent this email); feel free to > re-enable the Pd-announce delivery via your mailman-webinterface if you > feel the urge to do so. > > People who are only subscribed to the Pd-announce list are not affected > by this change. > > > > this should make cross-postings of announcements to both the > announcement-list and the main-list unneccessary. > > > mfg.asdr. > IOhannes > > > PS: this mail will appear on both mailing lists (so you might get it > double); i will change this after i sent this email > > _______________________________________________ > PD-announce mailing list > PD-announce(a)iem.at > http://lists.puredata.info/listinfo/pd-announce _______________________________________________ PD-announce mailing list PD-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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Re: [PD] table size limit
by Alexis Baskind 30 May '06

30 May '06

Hi all, Thanks for your answers. Actually I need a phase vocoder to perform an extreme time compression of the recording of a music piece (22 minutes -> 5 seconds). I want the final sound to keep as much as possible of the original recording's timbral colour and dynamics evolution. Thus I don't need to do it in realtime, but I wanted anyway to use pure data, because of the quality of Miller's implementation of the pvoc, which sounds amazingly better than any other I know, even without phase locking (I guess it's because ffts are computed on the fly, and not by interpolating between fixed frames). Kyle, thanks for the infos about recompiling. Anyway I already looked in the sources and among others in d_soundfile.c, but only found the soundfiler's default maximum size. As I mentionned the limitation is independent from soundfiler and seems to be inherent to table. I think I will follow Miller's suggestion to use several successive tables. Of course they should overlap on at least one block, since (correct me if I'm wrong) it may be difficult to switch from one table to another at the middle of a block. Cheers, Alexis > Message: 3 > Date: Mon, 29 May 2006 09:45:55 -0700 > From: Miller Puckette <mpuckett(a)imusic1.ucsd.edu> > Subject: Re: [PD] table size limit > To: Piotr Majdak <piotr(a)majdak.com> > Cc: pd-list(a)iem.at > Message-ID: <20060529164555.GA11160(a)imusic1.ucsd.edu> > Content-Type: text/plain; charset=us-ascii > > Hi all, > > It's probably not too hard to fix the phase vocoder to use a series of > short tables. The "bang~" object resets two tabread4~ objects every > block, so at the same time one could hop to the next table when > appropriate. > > Although audacity will do this too, it's interesting to be able to scroll > through a long soundfile (Kontakte in 4 channels for instance) at any > forward or backward speed. One can listen to a 6-channel version of the > entire 35-ish-minute long piece to test Stochhausen's assertion that the > large scale structure has the same identity as the piece does locally... > > cheers > Miller > > On Mon, May 29, 2006 at 11:17:12AM +0200, Piotr Majdak wrote: >> Hi Alexis, >> >> Alexis Baskind wrote: >> >I am trying to use Miller's wonderful phase-locked vocoder on a big >> sound >> >file (i.e. some 20 minutes on 2 channels). My problem is that "table", >> in >> >which the audiofile is supposed to be loaded, even including the >> 'maxsize' >> >option in soundfiler, does not seem to afford sizes bigger than some >> >1.700.000 elements, i.e. 24 bits I guess. Is there a means to overcome >> >this limit ? >> >> I don't know the answer, but I have a (maybe stupid) question: >> One great advantage of pd is processing audio in real-time. Why do you >> want >> to load signals into tables and perform the processing offline? >> >> br, Piotr >> >> >> -- >> Piotr Majdak >> Institut f?r Schallforschung >> ?sterreichische Akademie der Wissenschaften >> Reichsratsstr. 17 >> A-1010 Wien >> Tel.: +43-1-4277-29511 >> Fax: +43-1-4277-9296 >> E-Mail: piotr(a)majdak.com >> WWW: http://www.kfs.oeaw.ac.at >> >> >> >> _______________________________________________ >> PD-list(a)iem.at mailing list >> UNSUBSCRIBE and account-management -> >> http://lists.puredata.info/listinfo/pd-list

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render into rectangle
by marius schebella 30 May '06

30 May '06

Hi, I need to project a certain rectangle/quadrangle with a videobeamer. It is a distorted and non 4:3 area. I wonder if it possible to render the gembuffer into such a polygon. The rest of the screen should remain black. So I know how to render images and videos into that area, but I didn't find an easy solution to texture/snap the whole gemwindow into that rectangle. I would like to have some particle effects. the only way I can think of is using single buffer mode and pix_snap a buffer, then clear it and then texture onto my polygon. Do you have other ideas? thank you. marius.

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Re: [PD] "OuterSpace" - an ambient sound generator for PD
by derek＠x-i.net 30 May '06

30 May '06

Hi Alberto, alberto.zin(a)poste.it wrote: > Derek, since for me it is mostly learning, could you > please post your version of "panner" with the > interpolations? It is exactly what I tried to do... It's really simple, just interpolating the output of your panning [expr] objects with [pack 0 50] and [line~]. It's always much smoother to multiply one audio signal with another audio signal, rather than with a float, espcially when that float can jump in value at times. See attached. best, d. -- derek holzer ::: http://www.umatic.nl ---Oblique Strategy # 156: "The tape is now the music"

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Re: [PD] "OuterSpace" - an ambient sound generator for PD
by alberto.zin＠poste.it 30 May '06

30 May '06

Hi all, thanks for trying OuterSpace and for the precious tips. JN (paris), good to know that OS is working on Mac Tiger.. For Andy: in order to get it working without eating cpu from the beginning you can do the following: 1) clik on "preset" on the main gui 2) edit the first message and set "polyphony" to 10 (or any number that you think will not freeze the CPU) instead of 96; this is the starting preset that loads on opening the patch. Save it. 3) restart the patch (no more cpu issues now) and raise (slowly!) the "Fr spacing": this will let let you hearing the high frequencies but with less voices.. (OT: Of course I played Half Life, but I prefer the good old square waves of Mame :) Derek, since for me it is mostly learning, could you please post your version of "panner" with the interpolations? It is exactly what I tried to do... I'll try to include all your comment in a future v1.0.. Happy OuterSpacing :-) Alberto Zin

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Re: [PD] "OuterSpace" - an ambient sound generator for PD
by alberto.zin＠poste.it 30 May '06

30 May '06

Hi ~Kyle, Andy, List, First of all, thanks for giving a look to OuterSpace. By a very famous law (Murphy) I uploaded the "CPU hungry" version of OuterSpace, which still had graphical bangs etc. The zip file which is now in https://puredata.info/Members/AlbertoZ/ shall be lighter. Just to give a reference, using the first preset with the plain PD gui eats 20-25% of my AMD 2400+ processor, both on Win or Linux. Gripd gui is a bit more heavy, like 40%. To answer to Andy: yes, switch~ is implemented in each voice as long as you reduce the polyphony parameter. You should note the CPU load going down as you decrease it. Don't know if it still enough for cooling you CPU :-) give OS another look ! Alberto Zin >Wow, I haven't gotten to use it (on my girlfriend's >machine, and she >won't let me install Pd on it) but the documentation is >great! This >is a perfect model of what we all should be doing. I love >the PDF >file, and the interface looks awesome. I can't wait to try >it out! >~Kyle On 5/29/06, alberto.zin(a)poste.it <alberto.zin(a)poste.it> wrote: > Hi all, > > after few months of "spare time" development, I'd like to > share with you my first project in PD, which I > called "OuterSpace". > > OuterSpace (OS) is an ambient sound instrument for PD > capable of generating "natural" sounds like water, wind, > fire, chimes and other unusual sounds. It is based on > white noise filtered by a bank of 128 (!) bp~ filters, > spread across the audio spectrum. > The output of each voice (filter) is mixed and > reverberated. OuterSpace comes with a GUI made in GriPd > and a plain PD gui. OS has save, load, randomize preset > capabilities. The idea is very similar to SpaceDrone > Reaktor instrument, if you know it. > > I'd be glad if you'd like to try it, any feedback is -> > very <- welcome, so I can move it to v1.0 :-). > OS was developed and tested under Windows and Linux > (except the GriPD GUI in Linux, which I'm not able to run > yet!), but should (hopefully) work on Mac too. OS is GPL'd. > > Download it at: > > https://puredata.info/Members/AlbertoZ > > under the download section, together with the pdf and ps > docs. An mp3 sample is also there. > > > All the best, > > Alberto Zin > > > > _______________________________________________ > PD-list(a)iem.at mailing list > UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list > -- http://theradioproject.com http://perhapsidid.blogspot.com (((())))(()()((((((((()())))()(((((((())()()())()))) (())))))(()))))))))))))(((((((((((()()))))))))((()))) ))(((((((((((())))())))))))))))))))__________ _____())))))(((((((((((((()))))))))))_______ ((((((())))))))))))((((((((000)))oOOOOOO

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Re: arduino-help.me.please.pd [gadlletas]
by nomeparece 30 May '06

30 May '06

thanks frank, christian, hans, IOhannes, martin... nice to read all that about how to control a servo from pd.. i thought it was "easier" for me as entry level user to get to have a simple patch to move, withouth the need of exact prescition, a little servo..but what i see now is that things get to complex for me and that pd is still to far from my grasp..i cannot creatre a [comport~] or modifying stuff in the sample or rate timing..acordinng to all the replies, it looks like rocketeer science for me. :( again, merci /a On May 30, 2006, at 12:45 AM, pd-list-request(a)iem.at wrote: > > > 5. Re: arduino-help.me.please.pd [gadlletas] (Hans-Christoph > Steiner) > > > Hallo, > Frank Barknecht hat gesagt: // Frank Barknecht wrote: > > >> I guess (without looking), that somewhere in [comport] this >> information is discarded. Probably it shouldn't be discarded, if >> you want a timing resolution better than 64 samples. >> > > I now had a quick look at comport.c and it already is using clocks for > reading from the comport, but just writes to the port whenever > messages come in, which is quantized to one block. So you'll get > jitter. I think, introducing an unquantized timing similar to how > vline~ in d_ctl.c handles it (by using "x->x_referencetime = > clock_getlogicaltime();" and then working with "timenow = > clock_gettimesince(x->x_referencetime);") could get rid of the jitter. > It wouldn't be necessary to make a signal object [comport~]. > > At least that's what I believe: This clock stuff is quite confusing. > > Ciao > -- > Frank Barknecht _ ______footils.org_ __goto10.org__

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Re: [PD] "OuterSpace" - an ambient sound generator for PD
by derek＠x-i.net 30 May '06

30 May '06

Hi Alberto, totally great! Really a role model for ther kinds of "user library" patches people could be uploading. I also really appreciate the docs. This is the kind of thing I would show at the beginning of a workshop for people to see what is possible. A couple things: 1) I hear some clicks every once in a while. I got get rid of them by interpolating the panning values at audio rate in "panner.pd" with a [line~]. You've used [line] or [line~] just every other place that I can find, so that looks like the only place the clicks would come from. 2) I always joke in workshops that when you see [expr~], it's the sign of a real math geek! ;-) What might help this patch to have more educational value would be to put comments about what all these expressions are doing. But that's just my two cents. Thanks for posting this, d. -- derek holzer ::: http://www.umatic.nl ---Oblique Strategy # 142: "Shut the door and listen from outside"

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GPUFFTW
by Marc Lavallée 29 May '06

29 May '06

As seen on /.: "The UNC GAMMA group has recently released a high performance FFT library which can handle large 1-D FFTs. According to their webpage, the FFT library is able to achieve 4x higher computational performance on a $500 NVIDIA 7900 GPU than optimized Intel Math Kernel FFT routines running on high-end Intel and AMD CPUs costing $1500-$2000. The library is supported for both Linux and Windows platforms and is tested to work on many programmable GPUs. There is also a link to download the library freely for non-commerical use." (for those who value raw performance more than free software) http://gamma.cs.unc.edu/GPUFFTW/ -- Marc

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table size limit
by Alexis Baskind 29 May '06

29 May '06

Hi all, I am trying to use Miller's wonderful phase-locked vocoder on a big sound file (i.e. some 20 minutes on 2 channels). My problem is that "table", in which the audiofile is supposed to be loaded, even including the 'maxsize' option in soundfiler, does not seem to afford sizes bigger than some 1.700.000 elements, i.e. 24 bits I guess. Is there a means to overcome this limit ? Alexis

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Pd-list May 2006