Pd-list June 2014

pd-list@lists.iem.at

1 participants
82 discussions

Pd and SQL
by Roman Haefeli via Pd-list 22 Jul '14

22 Jul '14

Hi The few times I had to interface Pd with MySQL, I decided to use [shell] and cobbled together some queries sent to mysql command. While I think that is probably not the most elegant approach, I'd like to ask the community how you dealt with Pd and MySQL, or SQL in general, or even Databases in general. There are certainly many other ways to achieve data retrieval from databases within Pd, I am also thinking of ways that offload the talking to the database to other technologies/languages like PHP, bash, pyhton, etc. Then you have plenty of ways to interface Pd with those. I'm thinking of RESTful (purest_json), web (http* from mrpeach), still bash. I wonder what people decided to use in the end and what they found to be working well. Any success or failure stories to share? Roman

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[PD-announce] yahoo rejecting pd-posts
by IEM - network operating center (IOhannes m zmoelnig) 21 Jul '14

21 Jul '14

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 dear Pd junkies, recently, yahoo (and later aol) has implemented a strict spam-preventing scheme, that basically prevents mailinglists like yours truly from doing their work [1]. this scheme basically disallows re-distribution of emails from people with yahoo-accounts. you (esp. if you are using yahoo yourself, but gmail users might be affected as well) might have noticed, that some mailing-list posts have gone missing (esp. when originating from other yahoo users). a possibly missing email can be found at [2]. this is *not* a hostile attempt from our side (your faithful iem-team) to censor the mailinglist(s). we are currently investigating ways to mitigate the problem [3], but haven't found an acceptable /and/ working technical solution yet. if possible, we would like to suggest all posters using yahoo-addresses, to consider switching to another (free)mail-provider - - if only for the purpose of posting emails to innocent mailinglists. if we do not find a solution fast, we might be forced to *temporarily* disable posting from yahoo-addresses (but will try avoid this step as long as possible, and if forced to use it keep it as short as possible). yours, fgasmdr IOhannes [1] http://thehackernews.com/2014/04/yahoos-new-dmarc-policy-destroys-every.html [2 http://lists.puredata.info/pipermail/pd-list/2014-05/106991.html [3] http://wiki.list.org/pages/viewpage.action?pageId=17891458 - -- IEM - network operation center mailto:noc@iem.at -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Using GnuPG with Icedove - http://www.enigmail.net/ iQIcBAEBCAAGBQJThIvKAAoJELZQGcR/ejb4N3gP/0fcSMAI6IreSxcDlqWnL8h0 iNXIf0hMZGSNf6hcSN4zfgzNoUFtPV+f6HEcIXdYK6OR8Yymwgi31orunX6YWl1a xQYxgYsQ2L7a/JTvZSkgO2/HPtuGT83fzf9P43eJlSt47wVRloEphOe0tts4iObU NGsFHk/FUXfzGvmQA3RRFUFu+6GVsDA27EdHuJybBiMfbfL9WEqIcps9fvMF3ck5 ujw9SnnLKWqGVp2qImU4CW8DvbJr9WNzHQKNv/qAqYSYJepI7bqDUZuTR/+gjHzF PYKuu1g8+vRwemGkZJ9g+YSrt7cpG6xS8MOIFRmzNcjckh4BdRNtRqT0gEfpLjEd Qy7aYHpBbZVRDCJPIGPFhKScvKHjWEyNs5DWQ1EyVqt7240wnVQCC6KtIKtEOs1F E6LS62p3pg9dwT67fqEaMVU6VPN5/UFAm0478paICL73PwT2YcYDh6mf7Rri9io4 2XAFIi1QRqv4Arn87x323dn8ihXQN2hz2PZQkY9DXlN6CEMt8AOZe7oVmnWWrMEt 6rvj9vKnjT6Odj+cd0Ny/OWGq3nMP9ARLzQyoFtJzheM3ASvROGGqT+RJuHKLiBM hZ2p0Q6dbQeLsx37f7xdNhlK0CQgUjwJjD6kggLcCXpu5IFehZniwmvIyTok6QB+ qrWUMA2lNFl8GeVHBiDr =JzQK -----END PGP SIGNATURE----- _______________________________________________ Pd-announce mailing list Pd-announce(a)lists.iem.at http://lists.puredata.info/listinfo/pd-announce

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[lop~] coefficient calculation
by Joe White 19 Jul '14

19 Jul '14

Hi, I've been looking at the [lop~] implementation (Pd-0.45-4) and noticed something that seem weird to me. In d_filter, line 176: static void siglop_ft1(t_siglop *x, t_floatarg f) { if (f < 0) f = 0; x->x_hz = f; x->x_ctl->c_coef = f * (2 * 3.14159) / x->x_sr; if (x->x_ctl->c_coef > 1) x->x_ctl->c_coef = 1; else if (x->x_ctl->c_coef < 0) x->x_ctl->c_coef = 0; } Is it correct that for: y[n] = x[n] * a + y[n-1] * b *a = 2π * Fc / Fs* b = 1.0 - a where Fc is the cut-off frequency and Fs the sampling frequency. I appreciate the a coefficient is bounded afterwards but wouldn't that mean that Fc values greater than Fs / 2π will have no impact on the sound being processed. For example if Fs is 44100, then Fc values above ~7020Hz will not affect the filter. Have I missed something crucial or could this a bug in the code? The simple IIR filter described in http://en.wikipedia.org/wiki/Low-pass_filter suggests that the actual coefficient calculation should be more like: a = 2π*Fc / (2π*Fc + Fs) Looking forward to understand this more! Cheers, Joe -- Follow me on Twitter @diplojocus

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canvas_makefilename() returns error
by Jaime E Oliver via Pd-list 11 Jul '14

11 Jul '14

Hi all, I am trying to use the canvas_makefilename() function in g_canvas.c I am calling it like this: static void lilypond_write(t_lilypond *x, t_symbol *s) { char buf[MAXPDSTRING]; canvas_makefilename(x->x_canvas, s->s_name, buf, MAXPDSTRING); } but when I send the object a message such as [write test.txt( or similar, I get: error: consistency check failed: canvas_getenv Bus error: 10 The method is set up like this: class_addmethod(lilypond_class, (t_method)lilypond_write, gensym("write"), A_SYMBOL, 0); Anybody has any suggestion? best, J PS Sorry for pestering everyone with this, but there is little documentation on some of the functions in Pd. Perhaps this thread belong in the Pd-Dev list?

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Re: [PD] The dwc_otg.speed=1 issues on RPI with keyboards
by Alexandre Torres Porres via Pd-list 04 Jul '14

04 Jul '14

from http://puredata.info/docs/raspberry-pi/FrontPage "note: "dwc_otg.speed=1" is a string to add to the file, /boot/cmdline.txt, which slows down all USB devices to 1.1 speed - including ethernet. For some reason, when running with slow USB, USB (wired or with wireless dongle) keyboards don't work (connecting one will instantly crash the pi). The workaround is to either use a bluetooth keyboard or log in remotely via ssh -XY See, e.g.," 2014-06-28 3:21 GMT-03:00 Ivica Bukvic <ico(a)vt.edu>: > Sorry don't know anything about keyboard conflicts. I also need to check > whether the distro came already with the boot config included (I just > remember not having to deal with that, unlike before)... > > > On Sat, Jun 28, 2014 at 12:28 AM, Alexandre Torres Porres < > porres(a)gmail.com> wrote: > >> what does it mean, is it automatically down speeded to USB 1.0? What >> about keyboard conflicts? >> >> thanks >> >> >> 2014-06-28 0:07 GMT-03:00 Ivica Ico Bukvic <ico(a)vt.edu>: >> >> FWIW, recent install of raspbian did not require me to add this option to >>> boot (unless it was automatically added). >>> >>> >>> >>> *From:* Pd-list [mailto:pd-list-bounces@mail.iem.at] *On Behalf Of *Alexandre >>> Torres Porres via Pd-list >>> *Sent:* Friday, June 27, 2014 8:28 PM >>> *To:* pd-lista puredata >>> *Subject:* [PD] The dwc_otg.speed=1 issues on RPI with keyboards >>> >>> >>> >>> Hi there, so, about setting the USB to 1.1 speed in RPI with "dwc_otg.speed=1". >>> I've only seen a mention about it conflicting with USB and wireless >>> keyboards on the Pd page (meaning it works only with bluetooth ones), so I >>> come here to ask you people a few questions... >>> >>> >>> >>> I wonder if this could be worked around in future versions of the >>> raspbian operating system, seems to be some sort of a bug, right? >>> >>> >>> >>> On that note, hasn't it been already fixed by any chance? Or has anyone >>> found a USB or wireless keyboard that eventually works? >>> >>> >>> >>> Does it work with any bluetooth keyboard/mouse? I really don't like >>> those tiny mini small ones, do any of you suggest a nice bigger one? It >>> could be a compact one... >>> >>> >>> >>> thanks >>> >>> Alex >>> >> >> >

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new window out of bounds on raspberry pi and another stuff
by Alexandre Torres Porres via Pd-list 03 Jul '14

03 Jul '14

hi there. I'm sure you know about this. It's very annoying though. When I create a new pd document on my raspberry pi, the header is out of reach in the out of bounds reagion of my screen, and I can't get it and drag/resize it the way I want. What's the workaround? ps. while we're on the subject, is there an apt-get command for pd vanilla? I did apt-get install puredata and got extended 0.43 :P on that note, how do I uninstall extended too before installing vanilla? thanks

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waveform question
by Jonathan Wilkes via Pd-list 01 Jul '14

01 Jul '14

Hi list, If I take a circle, cut it in half horizontally, then move the bottom half r*2 units to the right, what is the waveform that results? -Jonathan

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Cross platform path for externals ?
by Jaime E Oliver via Pd-list 30 Jun '14

30 Jun '14

Hi Everyone, I'm trying to get my head around this problem, and I am not sure the subject describes it well…: In an external, I'm writing into a file with: FILE *fp1; fp1 = fopen(x->globalpath, "w"); I provide the external with x->globalpath through a message such as "open /home/user/filename.txt", but I am trying to find a path that would work on both os x and linux, so that it at least works in two platforms and my help file isn't platform specific. In Linux, I call Pd from the console with "pd" and I send several relative paths like "filename.txt" , "~/filename.txt", or "./filename.txt" work. In OS X, If I call Pd from the Terminal, I can also use these relative paths. By relative i mean relative to the Pd executable (bin). However, in OS X, when I double click on the Pd Icon, these same paths are not valid. I am trying to figure how textfile's write message does it, but I cannot locate the point in source where this is done. Anybody has any pointers? best, J

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textfile - No output? Unsure of usage.
by Tyler Worman via Pd-list 30 Jun '14

30 Jun '14

Hi - Fairly new to PD. Trying to read a text file and [textfile] doesn't seem to be doing anything. Read doesn't error when I have a valid file name. textfile never bangs from the right output so I'm not even sure it is doing anything. The left output won't seem to do anything. I've tried to attach print, but got no output. Tried unpack then print but no output. Many of the examples I've found online don't seem to be working for me. I can't produce any output from it. My goal is to read in a file with 1 number. I want to use that number as a variable to control which part of the patch runs. () | [read somefile.txt( | [textfile] | | [print] [bang] What am I doing wrong? How do I go about debugging it? I get nothing to the output. - Tyler

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Timer / metro / realtime
by jma＠jeanmarie-adrien.net via Pd-list 29 Jun '14

29 Jun '14

Hi List I have to solve the right way now clock drifts that result from the load of the CPU, because on my recent patches the CPU load varies dynamically enormously, resulting in time measurements totally wrong : with a very high CPU load the metro 1000 object gives outputs twice too slow, and when bypassing some part of the patch dynamically, reducing the load drastically, the metro runs faster than twice to fast ! why does not pd come back to a reasonable time behavior when reducing the CPU load ? it seems that pd stays crazy because of former stress… what is the correct way ? - make a customized metro with the realtime object ? - take CPU load in real time to scale logical time measurements accordingly across the patches ? JmA

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Pd-list June 2014