Pd-list April 2014

pd-list@lists.iem.at

72 participants
94 discussions

Re: [PD] Keeping Number box's
by Phil Stone 14 Apr '14

14 Apr '14

oops, meant to send this to the list, sorry Jonathan. On 4/14/14, 1:11 PM, Phil Stone wrote: > You have a point, if you are init'ing to zero; otherwise, it's easy to > see that a Number2 box is init'd when you open the patch, because it > has a non-zero value in it. > > But yeah, it's a little kludgey (especially the "init"/"no init" > button: is it status, or what *will* happen when you press it -- hint, > it's the latter, like most buttons). I wouldn't recommend it for use > with all those Pd nuclear weapon-control patches that are out there. > > > Phil > > > On 4/14/14, 12:56 PM, Jonathan Wilkes wrote: >> On 04/14/2014 02:03 PM, Phil Stone wrote: >>> Or use the "Number2" number box, and set its "init" attribute in >>> properties. It will then init itself with the last value that was in >>> the box at the time the parent patch was saved. >> >> I try to avoid the iemgui "init" method because it isn't represented >> in the Pd diagram. >> >> I'd rather do this: >> >> [loadbang] >> >> [42( >> | >> [numbox] >> >> Then you can see if you made a mistake. For example, I forgot to >> connect [loadbang] to [42(. I can quickly scan all other places >> where I use [loadbang] to see if I made a similar error. >> >> But if you use the "init" method, you must right-click and choose >> "Properties" on every single numbox to do error checking. The time >> wasted isn't worth whatever it is you think you save by using "init". >> >> Digression-- consider a Properties dialog with the following button: >> [don't fire nukes] >> >> Do you press it or not? >> >> -Jonathan >

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GEM patch
by kate sweeney 14 Apr '14

14 Apr '14

Hello, This message keeps appearing in the console window "tgl: no method for 'gem_state'". I have this patch in a subpatch. Many thanks.

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can [bp~] be obtained with biquad coefficients?
by Alexandre Torres Porres 14 Apr '14

14 Apr '14

Hi there. I'm trying to find a way to plot the frequency response of [bp~]. I know of patches that can plot from biquad coefficients, so it'd be great if I could get biquad coefficients from an input of frequency and Q. I see [bp~] is a 2 pole filter. So does it mean I can achieve it by zeroing out a bandpass filter made with [biquad~]? Cause I see people make bandpass filters with 2poles in biquad, but the zeros are at -1 and 1. I tried zero values of zero, but it didn't look to good to make me believe that's the same as [bp~]. I know of miller's example H10.measurement.pd, and compared to it, didn't seem to fit. Anyway, I wanted something that would plot [bp~] right away, not like the H10 example, which takes some time. But then, if we can't do it with biquad coefficients, I would need some guidelines to do it some other how. Thanks Cheers I know about filterview and patch

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keeping Pd DSP alive
by Chris Clepper 14 Apr '14

14 Apr '14

Hi list I'm wondering if there are any recommended ways to ensure DSP keeps running for long periods like permanent installations. I get 'audio I/O stuck' popping up every few days, which is not bad, but ideally audio should stay running indefinitely. I can send a [metro 1000] to [;pd DSP 1( to keep audio going, but is there any long term issue with doing that? Will it reliably restart audio after Pd closes it? Also, the internal message [;pd audiostate( only returns data to the console. Perhaps there is a way to poll Pd for the internal DSP state and restart it if it dies? Thanks!

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[PD-announce] jmmmp abstractions update
by João Pais 12 Apr '14

12 Apr '14

Hello everyone, the jmmmp library of abstractions has been updated. Besides minor changes, the new objects have been added: bezier~ - Transfer function GUI with one cubic bézier curve at audio rate matrixctrl - GUI for [iemmatrix/mtx_mul~] swatch-gui - Pick a color for your GUI using the hue-saturation chart (including color numbers for data structures) Feel free to download it and try it out. Hopefully the new version of Pd-Extended will have this library with it. For more informations and a tarball file, go to https://puredata.info/downloads/jmmmp/releases/0.3 Best, jmmmp _______________________________________________ Pd-announce mailing list Pd-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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Pd and jack.osc
by Nicola Pandini 12 Apr '14

12 Apr '14

Hi! I'm trying to interface Pure Data with jack.osc, but I think I'm missing something :-) At the moment I can connect Pure Data to jack.osc and I've successfully registered the PD client to jack.osc server. I've also successfully executed the "/connect" and "/locate" messages, but I'm having troubles understanding the "/receive" and "/receive_at". The man page (http://rd.slavepianos.org/?t=rju&m=jack-osc.text) says that I must specify a "category" that is a: "bit mask that indicates what categories of notification packets are requested." I've tried in many ways, but it seems that I'm not be able to create the correct OSC message. -- Nicola

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RE : windows and font
by jack 10 Apr '14

10 Apr '14

Hello Philippe, Do you have an exemple of a patch with your font ? And can you send them to us ? ++ Jack -------- Message d'origine -------- De : Philippe Boisnard <philemon1(a)mac.com> Date : A : pd-lista puredata <pd-list(a)iem.at> Objet : [PD] windows and font hello I have a problem with my patch my UNICODE font (for exemple CODE2000.ttf) isn't recognized by text3d do you know why ? I have tested some font, and it s always the same result I m on windows 8 I have resolved the python problem with a clean install of python 2.7 and the bin pyext philippe _______________________________________________ Pd-list(a)iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list

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windows and font
by Philippe Boisnard 10 Apr '14

10 Apr '14

hello I have a problem with my patch my UNICODE font (for exemple CODE2000.ttf) isn't recognized by text3d do you know why ? I have tested some font, and it s always the same result I m on windows 8 I have resolved the python problem with a clean install of python 2.7 and the bin pyext philippe

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Loading arrays with arbitrary wave forms
by David 10 Apr '14

10 Apr '14

Hi! Is there some way to fill an array (table) with an arbitrary wave form programatically? I know I can use sinesum or cosinesum to generate sums of sinusoidal wave forms, and in theory any periodic waveform can be generated this way. But I want to generate wave forms using more complicated trigonometric expressions, for example sin(sin(x) * pi) or sin(x) ^ 3. I'm not sure what they would sound like (which is what motivates me to try), or if there's some way to transform these expressions to use only sinesum or cosinesum (my knowledge of math is somewhat limited). Any suggestions on how I could do that in Pure Data? I could create an audio file using some other software tool and then load it into Pure Data, but I'd like to know if there's some way to do it directly in PD. Thanks.

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Re: [PD] Loading arrays with arbitrary wave forms
by David 10 Apr '14

10 Apr '14

Thanks again to everyone that replied. I looked at the examples, but to be honest I didn't really understand them completely, and I got a few error messages when I tried to run them. I have pd-extended installed, but maybe I'm missing some externals used by the examples. Anyway, I decided to go with plan B, and use another software package to generate sound files and then load them into PD. I'm using Octave, an open-source math program that is mostly compatible with Matlib. It has some built-in functions to read and write audio files (mono only), but I can generate audio files in just a few lines of code, like this: x = linspace(0,2*pi,1024); y = sin(cos(sin(x) * pi) * pi); plot(x,y); title('y = sin(cos(sin x) * pi) * pi)'); wavwrite(y,44100,16,'C:\\Data\\Octave\\sincossin.wav'); The first two lines generate the data (1024 samples in length), the next two lines draw a graph in a separate window, and the last line writes the data to a file. I really recommend it if you want to generate audio samples using math functions. Then I load the file into PD with the attached patch. Since I know my files are 1024 samples long, I can just allocate an array of the correct size and not have to worry about complications. I attached my patch and a sample file (generated using the code above) if you're interested. David.

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Pd-list April 2014