Pd-list June 2023

pd-list@lists.iem.at

21 participants
18 discussions

copy [text] buffer contents to another text buffer?
by Peter P. 08 Jun '23

08 Jun '23

Hi list, what would be the easiest way to copy the contents of [text define alpha] to [text define beta]? It seems [text get alpha] will only output individual lines and I am looking for a single command that copies all. I have no experience with data structures and don't know if that would help... Thanks for any, well, pointers! Peter

3 3

Re: [PD] issues trying to use libpd_process_float()
by Dan Wilcox 05 Jun '23

05 Jun '23

Also feel free to open an issue or PR to update the example with comments or docs about this. I maintain libpd but I haven’t actually used the python wrapper other than checking that the examples “kind of” run. enohp ym morf tnes ----------- Dan Wilcox danomatika.com robotcowboy.com > On Jun 5, 2023, at 12:01 PM, pd-list-request(a)lists.iem.at wrote: > > Date: Sun, 4 Jun 2023 15:34:42 -0700 > From: Eric Lennartson <lennartsoneric(a)gmail.com> > To: William Brent <william.brent(a)gmail.com> > Cc: pd-list(a)lists.iem.at > Subject: Re: [PD] issues trying to use libpd_process_float() > Message-ID: > <CAGkKnE0DgHX+rNvSm=6OH9aEaTnMX9ycMRpJ3GvsE4AfogmYSg(a)mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > I knew I was missing something simple! > > Thanks!

2 1

issues trying to use libpd_process_float()
by Eric Lennartson 05 Jun '23

05 Jun '23

Hello all, I have been experimenting with using python and libpd, and for the most part it works well. However, I have been trying to use the other processing methods such as libpd_process_float() or libpd_process_double(), but when I do I just get crazy noise. The code I'm working with is just a modified version of the echo.py file in the samples section of the libpd github page. Basically, all I have done is change the pyaudio format to paFloat32, created a dummy buffer to pass to the process method with array.array('f', range(libpd_blocksize()) and called libpd_process_float() instead. I did check to see if the format was supported using pyaudio's is_format_supported() method and it returned True. The pd patch itself is just a quite sine tone straight into the dac. So I'm really scratching my head here, what am I missing? Thanks for any insight you can provide. Eric

2 2

example needed: rfft~ into magnitudes AND phases AND back
by Peter P. 03 Jun '23

03 Jun '23

Hi list, trying to work on phase angles of spectra I am looking for an easy example with actual Pd objects how to convert a [rfft~] output from real and imaginary to magnitudes and phases, eventually unwrap phases if required, and then convert magnitudes and phases back to a cartesian for [rifft~]. I know about the Dudas/Lippe pvoc tutorials for MaxMSP but can not find much in Pd's documentation. Perhaps I am missing something? Thanks for any pointers! best, Peter

3 6

update on Gem for Apple Silicon?
by John Harrison 03 Jun '23

03 Jun '23

We're approaching 3 years now since Apple released the M1 and there's no Gem available for distribution on Apple Silicon that I'm aware of. I'm not finding a lot of conversation about it on this list and when searching in the Gem-dev list I found nothing. I tried compiling Gem for Apple Silicon myself and to my surprise it compiled and ran. There are some issues though. I didn't test thoroughly but quickly playing with some examples I saw artifacts when playing videos and general choppiness. Is Gem for Apple Silicon on anybody's radar? I'm up for being part of a team to get Gem on Apple Silicon if there's interest. -- John https://johnharrison.cc

5 7

Help with Gem on Fedora
by Francisco Medeiros 01 Jun '23

01 Jun '23

I need to play vídeo files with Gem on Nobara linux which is Fedora based but when compiling Gem I can only get film-support to use QuickTime. Does anyone know a way to install gmerin on Fedora? or What kind of video codecs work well with quicktime4linux? It complains about a bad magic number no matter what kind of file I try to open. Thanks, F. Medeiros

2 2

drawing poles and zeros (z-plane) in Gem?
by Peter P. 01 Jun '23

01 Jun '23

Hi has anyone already done a visualization of a z-plane with poles and zeros in Gem? cheersz, P

1 0

[text sequence] and rescheduling of updated buffers
by Peter P. 01 Jun '23

01 Jun '23

Hi list, I am using [text sequence] with wait times to generate timed events. The contents of my list buffer look something like 0 event1; 1000 event2; 1000 event3; When I insert a line into the buffer using [text insert 2] 1400 msecs after starting the sequencer, the text buffer looks like 0 event1; 1000 event2; 500 event2.5; 1000 event3; event2.5 will be output correctly, but event3 still fires 1000msecs after event2. I include a minimum working example. Since I would like to use this as a looping text sequencer, adding and deleting events while it is running, I am wondering what exactly happens behind the scenes when adding or deleting lines, and how I can achieve predictable behavior. At which times is [text sequence] reading in the buffer and (re)scheduling events? Thanks for any help, Peter

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Pd-list June 2023