Pd-list January 2014

pd-list@lists.iem.at

77 participants
122 discussions

bbox for an ellipse
by Jonathan Wilkes 11 Jan '14

11 Jan '14

Hi list, Anyone know a straightforward way to find the axis-aligned bounding box for an ellipse given: * center x * center y * radius x * radius y * arbitrary affine transformation applied using an svg-style 3x3 matrix Right now I'm just doing the trivial calculation for the bbox of the untransformed ellipse, then multiplying the matrix times those coordinates. That gives me a box that includes the ellipse, but I'd like to get the tightest fitting one. Thanks, Jonathan

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[PD-announce] fwd: en gros - en détail | snim open call for compositions | submission deadline Feb 21, 2014
by Michael Zacherl 10 Jan '14

10 Jan '14

snim – the spontaneous network for improvised music – is calling for new compositions for the festival `das kleine symposion`. The festival's 7th edition will take place at echoraum, Vienna, comprising three concerts in October 2014. For further details PLS see the attached PDF. Please forward to wherever you think it is appropriate! ** In case of questions PLS contact gabriele.drab(at)gmx.at ** _______________________________________________ Pd-announce mailing list Pd-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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GEM causes soung glitches
by D G 10 Jan '14

10 Jan '14

Hello List Im using GEM in 0.43.4 extended in ubuntu 12.04 Every time I open GEM window, the audio stream becomes glitchy. When I close it it goes away. I guess it might be a configuration tweak of the video card, but can't make it work. Does anyone have a clue or point out a good source of detailed info to overcome this? Thanks for your help! Daniel

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Re: [PD] Arduino + Standard Firmata + Arduino MIDI interface
by Ingo 09 Jan '14

09 Jan '14

Thanks! I've looked around and there is some code out there. Looks like the MIDI In which is what I mostly need definitely needs some electronic parts in order to be working. There is some code that I will test but I'm still note sure if it will conflict with the standard firmata. I guess I'll get the parts and start testing with the code that I found. Ingo ________________________________________ Von: José Luis Santorcuato Tapia [mailto:santorcuato76@gmail.com] Gesendet: Donnerstag, 9. Januar 2014 18:25 An: Ingo Scherzinger Betreff: Re: [PD] Arduino + Standard Firmata + Arduino MIDI interface Hi, is not necessary...you can googling a lot of midi projets with arduino...you could use a 5 pins midi connector...but i think yes...if you can asign properly data and pins...Cheap and easy... Best José El ene 9, 2014 7:13 AM, "Ingo" <ingo(a)miamiwave.com> escribió: Hi, I was wondering if I could use an Arduino as a MIDI interface while running the standard firmata. Does anybody do this? Can the additional software simply be added to the firmata or is it necessary to edit the firmata for doing this. Does the Arduino need extra parts like opto-couplers? Or is that stuff already on the board? (I'm using a Duemilanove with Ubuntu) I would appreciate if anybody could point me in a direction where I could find some working MIDI software that can be added to the firmata. Thanks! Ingo _______________________________________________ Pd-list(a)iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list

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usb controller for pd
by i go bananas 09 Jan '14

09 Jan '14

Have been looking round for a midi (preferably USB) controller for pd. here's what i have decided i need: * endless rotary knobs with LED displays * LCD display above each knob I've messed around with midi and usb controllers for years, and basically, if there is nothing written on the knob, i'm not smart enough to remember what that knob is meant to do. So the LCD display is a must. Also, i like to rapid-fire preset changes, so endless rotary knobs with LED displays is also a must. pretty much, the mackie c4 looks ideal, except for a couple of things that worry me: (1) no usb (2) not sure how well it integrates into pd in realtime (ie, can i update the LCD displays, knob position LEDS, etc???) (3) i read that the knobs take 5 full turns to send 0-127 midi cc. that sux. another one i'm looking at is the novation remote zero, which seems kinda cool too, but all i really need is the endless rotary knobs and LCD display, so there's a lot of stuff there i don't need. is there something i might have overlooked? i tried lemur and all that too, but i just can't get into the touch screen thing, either. i need real knobs.

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Re: [PD] audio drops for few ms, or one sec, with jack on ubuntu (was: Mess with Pd installation on Linux)
by Alexandros Drymonitis 09 Jan '14

09 Jan '14

On Thu, Jan 9, 2014 at 2:30 AM, Py Fave <pyfave(a)gmail.com> wrote: > sorrry saw ubuntu late > > > 2014/1/9 Py Fave <pyfave(a)gmail.com> > >> i think it's from jack setup >> search for jack issues with your specific hardware. >> i mean what mac do you use , >> jack version is important too >> > Well, I've been posting on the jack mailing list too, and some people there mention that Pd is known to have a poor Jack support... I also get clicks with Audacity, but someone mentioned that Audacity too is known to have a poor Jack support. Someone suggested that I use Pd with ALSA and use an alsa-jack-bridge to send the audio to my firewire sound card. I'll give that a shot and see what happens. BTW, I have Jack 1.9.8 > >> http://www.jackosx.com/news.html >> >> >> >> >> >> 2014/1/7 Alexandros Drymonitis <adrcki(a)gmail.com> >> >>> Just an addition to this, it shouldn't be pd's problem as I tried jack >>> with audacity and got drop outs there as well. I'd be grateful to any >>> help.. >>> >>> >>> On Thu, Jan 2, 2014 at 2:05 PM, Alexandros Drymonitis <adrcki(a)gmail.com>wrote: >>> >>>> Forgot to mention that whenever I move a window around, open a >>>> subpatch, swich between applications while the audio is running, the sound >>>> stops till I stop which ever action. >>>> Also I'm running $ jackd -d firewire -d hw:NVidia (forgot to write hw: >>>> in the first email) >>>> >>>> >>>> On Thu, Jan 2, 2014 at 1:29 PM, Alexandros Drymonitis <adrcki(a)gmail.com >>>> > wrote: >>>> >>>>> Coming back to a previous thread I started, having compiled pd with >>>>> jack, having done the realtime scheduling in jack, opening pd with '-jack' >>>>> and '-rt' I still get some audio drop outs. The sound actually stops for a >>>>> few ms, or even about a second, then comes back. >>>>> From the previous thread I was told that probably jack is waiting for >>>>> samples that pd doesn't provide at certain moments. I went through jack's >>>>> manual, but it is a manual for programmers and I'm not one, so I didn't >>>>> make much of it. >>>>> The only thing I found in jack's FAQ is a question about audio with >>>>> jack on a macbook (I'm on a macbook with ubuntu) that mentions a drivers >>>>> problem that distorts the output >>>>> http://jackaudio.org/macbook_distortion >>>>> but my output is not distorted... >>>>> I also tried to start up jack like this $ jackd -d firewire -d NVidia >>>>> but it really didn't make any difference (why should it? it uses the >>>>> same sound card with or without '-d NVidia'). Also used QjackCtl to change >>>>> the block size, but also didn't work. >>>>> Dunno if this message in jack's terminal says something about the >>>>> situation: >>>>> JackEngine::XRun: client = pure_data_0 was not run: state = 2 >>>>> JackAudioDriver::ProcessGraphAsyncMaster: Process error >>>>> >>>>> It appears whenever I open pd with '-jack' >>>>> I'm on a macbook 5,2 with ubuntu 12.04 and pd-0.45-4 >>>>> Can anyone help? >>>>> >>>> >>>> >>> >>> _______________________________________________ >>> Pd-list(a)iem.at mailing list >>> UNSUBSCRIBE and account-management -> >>> http://lists.puredata.info/listinfo/pd-list >>> >>> >> >

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Arduino + Standard Firmata + Arduino MIDI interface
by Ingo 09 Jan '14

09 Jan '14

Hi, I was wondering if I could use an Arduino as a MIDI interface while running the standard firmata. Does anybody do this? Can the additional software simply be added to the firmata or is it necessary to edit the firmata for doing this. Does the Arduino need extra parts like opto-couplers? Or is that stuff already on the board? (I'm using a Duemilanove with Ubuntu) I would appreciate if anybody could point me in a direction where I could find some working MIDI software that can be added to the firmata. Thanks! Ingo

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Free Impulse Response Software Update and Code Available
by Julian Brooks 08 Jan '14

08 Jan '14

(A message [below] from my sponsor [well, supervisor]) Dear all I think this might be of interest to some of you. The PD port is stalled, but now that the code is public, let's make it happen ;-) pa == (and here's some info about the project) The HISSTools Impulse Response Toolkit, a set of Max objects to capture and manipulate impulse responses, is now available in version 1.1 at http://eprints.hud.ac.uk/14897/ Apart from a new object and few bug fixes, the major news is the support of both 32 bit and 64 bit versions of Max, on both platforms (MacOS and Windows). The externals are still SSE optimised and all other goodies. We are also releasing as promised all the source code under modified BSD license, available now at: https://github.com/HISSTools/HISSTools_Impulse_Response_Toolbox There is also a second video tutorial available, this time on electronic acoustic room correction https://vimeo.com/79202287 http://www.youtube.com/watch?v=QXOJWv3mvrc Finally, there was a presentation at IRCAM of the musical methodologies that were investigated so far within the project. These conclusions are available in a new paper available here: http://eprints.hud.ac.uk/18549/ We hope you will find good use of these resources. Alex and P.A. ________________________________________________________________________________ I was passed this info just before the new year but thought it would get lost amidst the general festivities and may also appear to be a bit, well, last year when we've all got our heads around getting back into stuff. (some background info) About a year or so ago Katja and I put out a call to the list and forum to see if there was any interested parties willing to help port these from Max to Pd. There wasn't, and that's fine of course. In the meantime Alex (Harker) & P.A. have done a fairly sterling effort in separating the source code out into general dsp stuff and the Max specific, aiding greatly in any port attempt. My memory is that we had planned to at least port *something* from the library hoping that that may pique some interest in our community when people got some idea of the many creative possibilities opened up by having these objects available in Pd - but we haven't as of yet. To give some idea of the task as I see it: it took the four of us that ported one object ([ipoke~]) from Max to Pd almost 4 months of occasional work so to do this on a similar timescale - a decade! In fact this is a quote from Katja when I wrote to her after receiving the above email: "HISSTools has all the elements a live performer can use to improve sound quality. As such it is a kind of 'standard work' that would ideally be available for every real time DSP framework. I am to an extent familiar with all topics covered (fft, fast convolution, filter inversion, minimum phase conversion). I know how to read and write C and had already expressed my interest to be involved in a Pd port. But because of the complexity I recoiled, and do not want to make commitments. It is way too much for a hobby programmer who incidentally writes a Pd external in free time. The port should probably be initiated by a professional, or an advanced DSP student, in the context of an institution like a university." Before even starting on the various classes the job would probably start with designing a cross-platform build system for the stuff. It makes no sense to use Xcode or Visual Studio for a Pd project. HISSTools has quite a few dependencies and should probably be done with an autotools build system (configure script, libtool, etc). It's a big job - no question. And if someone, who (for me) is one of the heaviest Pd coders I know, baulks at the sheer size of the task then I'm in no real position to be doing much more than cheering from the sidelines. Certainly I'm way too far down the post-grad line to be thinking of taking something like this on as a PhD type project but perhaps there's someone who may be interested? I will certainly do all I can to try and instigate some institutional support from Huddersfield (I think there's some recent post-grad fee-waiver opportunities for example) and I'm sure Prof P.A. (who can actually do something about it) would be keen. Or perhaps there is a possibility of a joint institutional project or something - I don't know really. Anyway - it's out there, it's probably doable, and there's nothing yet in Pd that does this kind of stuff in one nicely coded bundle. Perhaps we can at least discuss it amongst ourselves? Regards and best wishes to all for the New Year, Julian

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Fwd: compil .py > .pyo to pyext
by Philippe Boisnard 07 Jan '14

07 Jan '14

Hi, and HNY I search to compile a python script (.py => .pyo) but the result is not good In fact I use : python -O -m compileall basedonne.py result : basedonne.pyo, but it's not good for pyext I have tested with simple.py for example, but it's the same result, my simple.pyo is not good I don't know where is my problem ? it's not pyext, because I have a good python script I think that it's my compilation best regards p

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audio drops for few ms, or one sec, with jack on ubuntu (was: Mess with Pd installation on Linux)
by Alexandros Drymonitis 07 Jan '14

07 Jan '14

Coming back to a previous thread I started, having compiled pd with jack, having done the realtime scheduling in jack, opening pd with '-jack' and '-rt' I still get some audio drop outs. The sound actually stops for a few ms, or even about a second, then comes back. >From the previous thread I was told that probably jack is waiting for samples that pd doesn't provide at certain moments. I went through jack's manual, but it is a manual for programmers and I'm not one, so I didn't make much of it. The only thing I found in jack's FAQ is a question about audio with jack on a macbook (I'm on a macbook with ubuntu) that mentions a drivers problem that distorts the output http://jackaudio.org/macbook_distortion but my output is not distorted... I also tried to start up jack like this $ jackd -d firewire -d NVidia but it really didn't make any difference (why should it? it uses the same sound card with or without '-d NVidia'). Also used QjackCtl to change the block size, but also didn't work. Dunno if this message in jack's terminal says something about the situation: JackEngine::XRun: client = pure_data_0 was not run: state = 2 JackAudioDriver::ProcessGraphAsyncMaster: Process error It appears whenever I open pd with '-jack' I'm on a macbook 5,2 with ubuntu 12.04 and pd-0.45-4 Can anyone help?

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Pd-list January 2014