Pd-list July 2008

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111 participants
206 discussions

Re: [PD] pd clicking with jack/linux
by Matt Barber 01 Jul '08

01 Jul '08

> Date: Tue, 1 Jul 2008 15:46:57 +0200 > From: Frank Barknecht <fbar(a)footils.org> > Subject: Re: [PD] pd clicking with jack/linux > To: pd-list(a)iem.at > Message-ID: <20080701134657.GG6144(a)fliwatut.scifi> > Content-Type: text/plain; charset=iso-8859-15 > > Hallo, > Atte Andr? Jensen hat gesagt: // Atte Andr? Jensen wrote: > >> Basically I think my problems came from using array (and not table) to >> store a sample. Pd gave DIO errors when switching to the window >> containing the patch. Is this normal, and is there a way to avoid it, >> for instance running the gui in a separate thread? > > It already runs even in a separate process from the audio engine. But > both are tied together very closely and communicate a lot with each > other, which leads to dropouts on gfx-intensive operations e.g. moving > a lot ob objects or displaying and updating large graphical arrays. > Use [table] everyhwere, you don't need to see the data, and avoid > graphical objects for debugging in performance situations, only use > them to input data. I.e. this is bad: > > [r something] > | > [bng] > | > [s something-else] > > this is better: > > [r something] > |\ > | [bng] > | > [s something-else] > > because you can easily make this out of it: > > [r something] > | > | > | > [s something-else] > > and if you want to be fancy, use something like this: > > [r DEBUG] > | | > [spigot] > | > [bng] > > to make debugging switchable on the fly. > > Ciao > -- > Frank Barknecht _ ______footils.org__ > Thanks, this is all great advice. Incidentally, I think the cpu usage with graphical objects is even worse on OSX, so if you want your patches to be cross-platform, it's best to optimize them not to include too many (vu meters are the worst, but you can improve them based on arguments you give to [env~], if you're using that to drive them). Depending on what your patch does, you can often put much of the "engine" of your patch in subpatches, and then make a "control surface" with sends and receives. Those can be split up, too: for instance if you have the need for a "mixer" and a "reverb module," the surfaces for those things can be put in different subpatches so that they only take up cpu when you decide to have them open to use them. Also, it's a good idea to avoid the sprawling, spider-webby "max-msp"-like patches you might often see (due, I think in max, to the bendable and hideable patch cables, so you'll be less tempted in Pd)-- you can significantly improve the organization of your patch by using subpatches to group your objects into different "modules." And modules that you use more than once or twice in a given patch you can make into abstractions and use more or less like regular objects. Thanks, Matt

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print all abstractions and externals
by Hans Roels 01 Jul '08

01 Jul '08

hello, I've made a patch that might be useful for others. In the attached patch you can open a pd-file and the main window prints all the abstractions or externals that you need to make the patch work. It doesn't detect abstractions within abstractions though and it also prints objects like [5] or [$1], I didn't find a solution for this (small) problem yet. (I'd think it is bad pratice to use [5] in sted of [5( or am I wrong?) I wanted to make a patch that copied all the necessary abstractions and the file itself to a new folder but I ended up with this simpler solution... hans r

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Re: [PD] print all abstractions and externals
by Mathieu Bouchard 01 Jul '08

01 Jul '08

On Tue, 1 Jul 2008, Hans Roels wrote: > or [$1], I didn't find a solution for this (small) problem yet. (I'd think it > is bad pratice to use [5] in sted of [5( or am I wrong?) [5] is not a replacement for [5(, it's an alias for [f 5]. _ _ __ ___ _____ ________ _____________ _____________________ ... | Mathieu Bouchard - tél:+1.514.383.3801, Montréal, Québec

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getting the sample rate + channels of .wav
by Atte André Jensen 01 Jul '08

01 Jul '08

Hi How do I get the sample rate and number of channels of a wav-file? I'd like to handle stuff like rate and mono/stereo (more) automatically... -- peace, love & harmony Atte http://atte.dk | http://myspace.com/attejensen http://anagrammer.dk | http://modlys.dk

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[PD-announce] support for Sony SIXAXIS on GNU/Linux
by Hans-Christoph Steiner 01 Jul '08

01 Jul '08

So it turns out that the drivers for the Sony SIXAXIS controller are now included in the Linux kernel. So if you have kernel version 2.6.24, then you can just plug it in, and it'll be fully recognized. And even better, [hid] gets all of the data from it, except for the accelerometer. So I wrote [sixaxis], which is meant to be used in conjunction with [hid], to get the accelerometer data. This controller is unusual because all of its buttons are also pressure sensitive. That means for each button, you also get an analog report between 0 255. You can get this first version in SVN or here, built for i386: http://at.or.at/hans/pd/objects.html .hc ------------------------------------------------------------------------ ---- Mistrust authority - promote decentralization. - the hacker ethic _______________________________________________ Pd-announce mailing list Pd-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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Re: [PD] pd clicking with jack/linux
by Matt Barber 01 Jul '08

01 Jul '08

I don't use ubuntu either, but out of curiosity, what happens if you run: sudo su - ?? Matt > Date: Tue, 01 Jul 2008 00:32:12 +0200 > From: Derek Holzer <derek(a)umatic.nl> > Subject: Re: [PD] pd clicking with jack/linux > To: patrick <puredata(a)11h11.com> > Cc: pure data <pd-list(a)iem.at> > Message-ID: <48695EEC.7070200(a)umatic.nl> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > I run PD as root (not sudo, but real root) for click-free operation. But > Ubuntu has this weird thing where you can't be root, you can only sudo. > Very strange... anyways, worth a try. > > I also use fluxbox with very little else going on in the GUI. Spent > almost a year tuning Linux to get really optimum performance for live > gigs and recording situations, really the idea is that less is more. > Ubuntu/Red Hat/SuSE etc just have too many processes (especially > graphical ones that cause interruptions) running at once, IMHO. > > best, > D. > > patrick wrote: >> hi, >> >> i don't use pd-extended, but i think it's almost the same. the only >> option missing is: -nosleep (useful for dual-core). >> >> so be sure in qjackctl - setup: >> Realtime >> Periods/Buffer: 2 >> Sample Rate: 44100 (or more) >> Frames/Period: 256 (i am running at 64 without glitches) >> >> then for pd: >> pd -rt -jack -r 44100 -nosleep -audiobuf 256 -channels 16 -alsamidi >> -mididev 1 etc... >> >> and finally, be sure to edit /etc/security/limits.conf: >> @audio - rtprio 99 >> @audio - memlock unlimited >> @audio - nice -20 >> >> and of course, add yourself to audio group (reboot to be sure). let us know. >> >> ah yes, a long time ago i was using icewm, because gnome was causing >> glitches in pd. but now it seems ok here. >> >> pat >> >> >> Atte Andr? Jensen wrote: >>> Hi >>> >>> I get clicks and "DIO errors" at random intervals under linux/ubuntu >>> with jack (no xruns). I have a 17ms latency setup with jack and a >>> realtime patched kernel and the rest of my audio setup works great with >>> jack. >>> >>> I installed pd from Pd-0.40.3-extended-20080628-ubuntu-gutsy-i386.deb >>> >>> Any one else running a similar pd with a similar setup and either have >>> it working or experience the same problems? >>> >>> >> >> >> _______________________________________________ >> Pd-list(a)iem.at mailing list >> UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list >> > > -- > derek holzer ::: http://www.umatic.nl ::: http://blog.myspace.com/macumbista > ---Oblique Strategy # 97: > "Is the style right?" >

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Pd-list July 2008