Pd-list May 2016

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78 participants
146 discussions

Can you close source of Pd patches (for commercial development)?
by Matti Viljamaa 11 May '16

11 May '16

I’ve been thinking about the feasibility of leveraging Pd as a development platform for commercial patches. Sort of like some (e.g. Twisted Tools) are using Reaktor for developing commercial-grade plug-ins. But instead of Reaktor I could rather use Pd, because it’s a more open platform. But if the development is for commercial purposes, there would need to be some sort of mechanism for closing the source. Is this possible or something worth looking at? -Matti

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New version of freeverb~ with alternate output option.
by Fred Jan Kraan 10 May '16

10 May '16

Hi All, I just completed the upload of an updated version 1.2.2 of freeverb~ to puredata.info, and it is available via deken for the usual platforms. This version of Freeverb~ has three enhancements: - placed the fix_denorm_nan_float() function is the signal path, - added an alternate output that is closer to reality (in theory anyway), - restyled the help patch and fixed the missing wav file. The github repository is at https://github.com/electrickery/pd-freeverb. I am looking forward to any comments regarding the alternate output feature. Greetings & have fun, Fred Jan

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Re: [PD] Dynamic search paths and [declare] behavior in Pd.0.47
by Jérôme Abel 10 May '16

10 May '16

> i *think* that the best way to achieve this is to allow a > library/framework to run some code when being setup. for me the > obvious place would be the "-meta" file (Gem-meta.pd) which has become > the de-facto standard to add meta-information to a library. It could be very nice and configurable. I'm curious to look at the libdir loader source file but I don't . Best. Jérôme.

2 1

yamaha TF mixer with Pd?
by Jaime Oliver 10 May '16

10 May '16

Hi all, Has anyone successfully used a Yamaha TF mixer with Pd? The mixer has an onboard multichannel sound card with a USB connection. any insight would be appreciated… best, J

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Re: [PD] LibPd on microcontroller
by Peter Nyboer 10 May '16

10 May '16

> Content-Type: text/plain; charset=UTF-8 > > Hi, thanks for your answer! I'll definitely have a look at heavy and compare the results with some bits of my own DSP code. > >> How do you plan to output audio >> from it? It has SPI that could get you to connect to some DACs but >> nothing of top quality audio. One can also use PWM to simulate analog >> out. > > I actually thought of connecting ADCs and DACs via SPI, I don't need top audio quality, I'm rather looking for cheap effect/sound boxes :-). On the other hand, the ESP8266 also an I2S interface (dedicated to audio). I've seen videos of people streaming and playing mp3 files with it! > > Once I've done my tests (probably not before July), I'll tell my results. Not sure how cheap is cheap, but the CHIP from Next Thing Co is $9 + shipping http://getchip.com <http://getchip.com/> and has audio, wifi, and bt built-in. I’ve been running PD on it. There’s still some issues with duplex audio in PD, but there is vast potential for audio fun on this thing. disclosure: I work for NTC P

4 5

Delay Bug still buggy in 0.47-0
by Alexandre Torres Porres 10 May '16

10 May '16

2016-05-03 23:06 GMT-03:00 Miller Puckette <msp(a)ucsd.edu>: > OK... I think this is now fixed (just hoping it doesn't make for new > bugs :) > Howdy Miller, I'm testing the new 0.47 version and I see that the bug is "partially" fixed. I had sent 2 patches describing the bugs and how we couldn't reach the actual maximum specified delay length. One of these patches I had sent, the one with [delread~] and a block size of 64 samples is indeed ok now, but the other one, with vd~ and a block of 2048 and an overlap of 4 still behaves badly in the exact same way. So apparently there's more to it when it comes to different block sizes. And I have some patches where I use delay for spectral processing, so this ruins everything as I'm using block sizes longer than 64... We have actually discussed these issues before on this list under different (but related) threads. I was browsing through the discussion history to see what else i could find. I found this patch under a thread started by Christof Ressi ("[PD] [vd~] VS [delread~] - different delay limit!"). The patch was showing how both objects had different maximum limits. This is in fact fixed in the new release, but I was working more on this patch and added a few more things to study how things are working and why I was still getting the same problems. It turns out that is seem the delay size is always hard coded to a maximum block size of 64. If you have block sizes smaller than 64, it is fine, the maximum delay line is indeed the amount specified. But if you have larger block sizes, the maximum delay line is actually less than specified. Let me give you an example with a given sample rate of 44.2khz. A delay line of 100 ms (4410 samples) and a block size of 4096 (92.8798 ms in 44.1kz) has a maximum delay line of around 378 samples (I'm trying to calculate this on the patch, but I get a slightly different value). The 378 samples comes from the whole delay line (4410 samples) minus the block size (4096) plus a block size of 64 samples (4410 - 4096 + 64 = 378) - so, that's about 8.6 ms instead of 100 ms! An overlap of 4 does upsample the delay line in 4x, so the length goes from 100 ms to 400 ms (and is 17640 samples long instead of the original 4410). A block size of 4096 will give us a max delay length of about 308.5 ms, so again the formula is (1760 - 4096 + 64 = 13608 samples [308.5 ms]). You can check this with the attached patch. ================================= So, problem is to make the delay line aware of the running block size - and I have no idea of the challenges involved. cheers

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Re: [PD] zexy objects not created
by rolfm＠dds.nl 10 May '16

10 May '16

@ Lucas > > Use [declare -path %appdata%/pd/zexy] this works also. but my patch needs to be transportable to OSX, so i guess it's better to stay with IOhannes' solution. thanks anyway rolf

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Expr V0.5-alpha
by Shahrokh Yadegari 10 May '16

10 May '16

Dear All, Attached is a pre-release of Expr 0.5 compiled for Mac os x (compiled on 10.9) and Linux (compiled on an older Cent OS). I have also attached Alexandre's big pd patch which listed the issues, with my comments. Hopefully I have addressed most of the issues that were brought up and now I am working on a more complete documentation of Expr objects. One open issue is that expr still supports no more than 10 expressions. I have provided a mechanism for local variables and abstraction substitutions ($0 and $1, $2, etc.) to work. Also, one hopefully useful new feature in V0.5 is the assign '=' operator. Now you can use expr to assign to "value"s and into arrays. So if you have a variable called 'count' "value count" "expr count = count + 1" will implement a counter, raising the value of count with every "bang" You can also change values of arrays through the usual syntax. "expr array1[5] = $f1" will set the sixth value (counting zero based) of the array "array1" to the incoming float value on inlet 1. I will write a more informative and comprehensive release notes along with the documentation when I pass the sources to Miller. However, I have made a few changes to the parser and I am looking for alpha-testers who can run the code and let me know if any bugs are found, specially in parsing of complex expressions. I look forward to hearing from whoever uses these objects. Please let me know if you find any bugs. (NOTE: you need to create the links for expr and fexpr~ to get the new version for those as well.) cheers, Shahrokh

4 11

[netsend] bug?
by Mario Mey 10 May '16

10 May '16

Hi, there. I'm trying to use PureData 0.46.7 to control VLC. Based on a patch in https://github.com/mxa/AudioVideoPatches, that uses Python code (pyext) to send TCP messages, I want to use [netsend] to send them, without Python. I start VLC with: vlc -I rc --rc-host=localhost:1234 And, in Pd: [connect localhost 1234( | | [list add file.mp4( | [list prepend send] | [list trim] | / [netsend] The connection is well done, but I discovered that the messages arrives with a ";" at the end of the message. For example, when I click on [list add file.mp4(, VLC says (sorry for the language): [0x7f387c0044a8] filesystem access error: cannot open file /home/mario/file.mp4; (No such file or directory) [0x7f387c0044a8] main access error: FallÃ³ lectura de archivo [0x7f387c0044a8] main access error: VLC no pudo abrir el archivo Â«/home/mario/file.mp4;Â» (No such file or directory). [0x7f3888005ac8] main input error: open of `file:///home/mario/file.mp4%3B' failed [0x7f3888005ac8] main input error: Su entrada no puede abrirse [0x7f3888005ac8] main input error: VLC es incapaz de abrir el MRL Â«file:///home/mario/file.mp4%3BÂ». Vea el registro para mÃ¡s detalles. Also, I use a simple Python script (Server code in https://wiki.python.org/moin/TcpCommunication) to receive this messages and, when it does, it prints: received data: b'add file.mp4;\n' Ssome guys from #dataflow told me that the best workaround is to make a small program/app/script that strips semicolons. Yes, now I'm writing it... but I would not need another program to do this. I've never reported a Pd bug. I'm writing this mail to you to know about this (maybe it is not necessary to report it)... and maybe someone knows another workaround. Thank you.

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Re: [PD] zexy objects not created
by rolfm＠dds.nl 09 May '16

09 May '16

> IOhannes wrote: > --------------------------------------------------------------- >> >> in declare-help it says: if you have zexy installed in the >> directory extra/zexy you can get it using [declare -stdpath >> extra/zexy]. > > i guess the example is not really tailored to zexy (it's just used as a > placeholder) > a pity, it took me half a day to discover the problem was explicit with zexy and not with the other externals. > use [declare -stdpath zexy -stdlib zexy] this works indeed, thanks. >> (BTW deken gives a choice out of 2 zexy's, what's the difference? > > mine gives me 9 zexy's and i can see the difference by reading them out > loud. i get 9 too, but 7 are greyed out. reading out loud the 2 left-overs (for Windows) brought me to the conclusion that one is for Vanilla and the other one for Pd-extended. correct me when i'm wrong. rolf

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Pd-list May 2016