Pd-list April 2014

pd-list@lists.iem.at

72 participants
94 discussions

Video problems using GEM
by Claire O'Connor 17 Apr '14

17 Apr '14

Hi, I am currently working on a project which uses films with GEM. However, the films are very glitchy and play very slowly when they load up. I was wondering if anyone knew anything about how to fix this problem? The videos used were taken on a Canon Ixus 127 HS and last between 10 and 15 seconds. They are .MOV files and I even tried exporting them as smaller files but it didn't change their glitchiness. Here is an example of the file before and after the export with the original file being 80.8MB and the exported file being 5.9MB. Even with a drastic change in size, the difference in playback did not change much at all. Any thoughts and ideas welcome. Thanks!

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Re: [PD] Pd-list Digest, Vol 109, Issue 52
by Nick Arner 17 Apr '14

17 Apr '14

Hi Jack, Yes, that was my mistake; I've now attached both the patch and the abstraction. Thanks! Nick On Wed, Apr 16, 2014 at 6:00 AM, <pd-list-request(a)iem.at> wrote: > Send Pd-list mailing list submissions to > pd-list(a)iem.at > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.puredata.info/listinfo/pd-list > or, via email, send a message with subject or body 'help' to > pd-list-request(a)iem.at > > You can reach the person managing the list at > pd-list-owner(a)iem.at > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Pd-list digest..." > > > Today's Topics: > > 1. Re: Pd and RME HDSP alsa vs jack performance (Peter P.) > 2. Re: PD List (GEM VideoSynth) (Jack) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 15 Apr 2014 18:40:31 -0400 > From: "Peter P." <p8rpp(a)aol.com> > Subject: Re: [PD] Pd and RME HDSP alsa vs jack performance > To: Federico Galland <federicogalland(a)gmail.com> > Cc: pd-list(a)iem.at > Message-ID: <20140415224030.GB8322(a)aol.de> > Content-Type: text/plain; charset=us-ascii > > * Federico Galland <federicogalland(a)gmail.com> [2014-04-15 17:46]: > > On Tue, 15 Apr 2014 16:07:03 -0400 > > "Peter P." <p8rpp(a)aol.com> wrote: > > > > > Hi list, > > > > > > following up onto some earlier postings I had made about the current > > > problems running Pd with any buffersize larger(!) than 5 using alsa, > > > the mmap code and an RME HDSP Multiface on Debian Linux, here are some > > > more results from tests I made recently: > > > > > > Alsa only works with audiobuf smaller 6, otherwise causing totally > > > garbled sound. With that short buffer settings it is unusable for > > > everything more CPU intense than sine test tones though. > > > > > > The only way to get Pd to run reliably under some load on my box using > > > the HDSP is to use jack with 256 frames at 2 periods/buffer. > > > > > > Now what is weird is that the built in soundcard of my box is able to > > > do the same thing without problems with just 64 frames at 3 > > > periods/buffer in jack. > > > > > > Again with the HDSP, once I start adding Gem and let it render a > > > single geo, I do get many audio dropouts unless I increase jack's > > > buffers to a minimum 2048 frames at 2 frames/buffer. > > > > > > I tested this using two different HDSP cards on two different Debian > > > boxes, using the -rt flag, realtime and non-realtime kernels, > > > optional callbacks and different sleegrain setting. > > > > > > Somehow it seems very sad that one of the best pro multichannel sound > > > cards under Linux seems to be unusable with Pd under Alsa reliably. > > > > > > I would like to contribute to any ways of improving this situation and > > > desperately hope that someone can comment on my findings. > > > > > > thank you! > > > best, Peter > > > > > > _______________________________________________ > > > Pd-list(a)iem.at mailing list > > > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > > > > I guess you have ruled out everything under this wiki > http://wiki.linuxaudio.org/wiki/system_configuration ? > Thank you Federico, > I looked at the page and most suggesstions is stuff I already > considered. > > > > Is the HDSP a PCI interface? If so, pay particular attention to the "pci > bus latency" part. > Well it is a ExpressCard interface in my case, and I wonder if that > qualifies as PCI device. The above pages mentions that PCIe devices > are not affected by the irq priorities as PCI does. > > best, Peter > > > > ------------------------------ > > Message: 2 > Date: Wed, 16 Apr 2014 10:55:40 +0200 > From: Jack <jack(a)rybn.org> > Subject: Re: [PD] PD List (GEM VideoSynth) > To: Nick Arner <nicholasarner(a)gmail.com>, pd-list <pd-list(a)iem.at> > Message-ID: <534E458C.6060408(a)rybn.org> > Content-Type: text/plain; charset="utf-8" > > Hello Nick, > > Don't forget to reply to all. That could be interresting for other > people on this list. > The document you sent is now a patch (attached). > But what can we do with it ? There is only a single object [video_synth] > on the canvas. It seems to be an abstraction, right ? > You have to send us the patch AND the abstraction. > And where are other objects like [gemwin] ? We are talking about Gem, no ? > ++ > > Jack > > > > 06 59 23 94 69 Andr? > > Le 16/04/2014 01:23, Nick Arner a ?crit : > > Hi Jack, > > > > Thanks for the reply! I've attached the PD patch (it looks like the > > attachment went through this time) > > > > Thanks, > > Nick > > > > -- > > nickarner.com <http://nickarner.com> > > > >

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[PD-announce] Network Music Festival 2014 // OPEN CALL
by Holger 16 Apr '14

16 Apr '14

*Network Music Festival // 26-28th September 2014 // Birmingham (UK)* http://networkmusicfestival.org/about/ The third *Network Music Festival* will take place *26-28th September 2014 *in *Birmingham (UK)*. Exploring innovative digital music, art and research which investigates the impact of networking technology on musical creation and performance practice, Network Music Festival will host a weekend of musical performances, installations, workshops, talks and other activities. *Open Calls* http://networkmusicfestival.org/open-call/ <http://networkmusicfestival.org/open-call/%22%20%5ct%20%22_blank> *DEADLINE FOR ALL SUBMISSIONS: 16th May 2014* The Network Music Festival 2013 is now inviting submissions in the categories of: - *Performances (Concert, Club, Multi-channel, Telematic, Algorave)* *- Collaborative Live Coding Environments* *- Installations* *- Talks* *- Workshops* We also include an ‘Other <http://networkmusicfestival.org/open-call/#other>’ category where you are free to submit proposals that fall outside of the previous categories but that you feel would be an appropriate addition to the festival programme. Although we aim to showcase a broad spectrum of approaches to network music, we particularly encourage submissions that fall under the year’s theme of *collaboration through online environments and networked live coding*. For more information on submission categories and for submission forms please go to: http://networkmusicfestival.org/open-call/ <http://networkmusicfestival.org/open-call/%22%20%5ct%20%22_blank> Any questions email networkmusicfestival(a)gmail.com <mailto:networkmusicfestival@gmail.com> with ‘OPEN CALL’ in the subject line. *DEADLINE FOR ALL SUBMISSIONS: 16th May 2014* networkmusicfestival.org <http://networkmusicfestival.org/> // @netmusicfest <https://twitter.com/NetMusicFest> // facebook.com/networkmusicfestival <http://www.facebook.com/networkmusicfestival> _______________________________________________ Pd-announce mailing list Pd-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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Re: [PD] PD List (GEM VideoSynth)
by Jack 16 Apr '14

16 Apr '14

Hello Nick, Don't forget to reply to all. That could be interresting for other people on this list. The document you sent is now a patch (attached). But what can we do with it ? There is only a single object [video_synth] on the canvas. It seems to be an abstraction, right ? You have to send us the patch AND the abstraction. And where are other objects like [gemwin] ? We are talking about Gem, no ? ++ Jack 06 59 23 94 69 André Le 16/04/2014 01:23, Nick Arner a écrit : > Hi Jack, > > Thanks for the reply! I've attached the PD patch (it looks like the > attachment went through this time) > > Thanks, > Nick > > -- > nickarner.com <http://nickarner.com> >

1 0

Pd and RME HDSP alsa vs jack performance
by Peter P. 16 Apr '14

16 Apr '14

Hi list, following up onto some earlier postings I had made about the current problems running Pd with any buffersize larger(!) than 5 using alsa, the mmap code and an RME HDSP Multiface on Debian Linux, here are some more results from tests I made recently: Alsa only works with audiobuf smaller 6, otherwise causing totally garbled sound. With that short buffer settings it is unusable for everything more CPU intense than sine test tones though. The only way to get Pd to run reliably under some load on my box using the HDSP is to use jack with 256 frames at 2 periods/buffer. Now what is weird is that the built in soundcard of my box is able to do the same thing without problems with just 64 frames at 3 periods/buffer in jack. Again with the HDSP, once I start adding Gem and let it render a single geo, I do get many audio dropouts unless I increase jack's buffers to a minimum 2048 frames at 2 frames/buffer. I tested this using two different HDSP cards on two different Debian boxes, using the -rt flag, realtime and non-realtime kernels, optional callbacks and different sleegrain setting. Somehow it seems very sad that one of the best pro multichannel sound cards under Linux seems to be unusable with Pd under Alsa reliably. I would like to contribute to any ways of improving this situation and desperately hope that someone can comment on my findings. thank you! best, Peter

2 2

GEM Video Synth Example
by Nick Arner 15 Apr '14

15 Apr '14

Hello all, I was going through some PD examples I had downloaded awhile ago and found an interesting example of a GEM video synth (that I've attached). I'd like to use it as an example in an Intro to PD Workshop I'm going to be giving, but can't seem to find where I downloaded it from in order to give credit. Anyone know who made it? Thanks! Nick -- nickarner.com

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Re: [PD] Sequencing GEM patches (kate sweeney)
by Dario Pedrioli 15 Apr '14

15 Apr '14

Hi, you should put on your subpatches an inlet to trigger start and an outlet to output end. So you can link outlet of "pd one" to inlet of "pd two", outlet of "pd two" to outlet of "pd three" and so on. Ciao Dario > Hello, > > I have a main window with elevel subpatches which create visual graphics > in a GEM window. Is there a way in which I can sequence these subpatches > one after the other? For instance, I would like [pd one] to start, and when > that finshes, [pd two] starts, etc. Is there something I can put in the > main window to trigger these sequences? I have included a screenshot of my > main window. > > All the best. >

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Sequencing GEM patches
by kate sweeney 15 Apr '14

15 Apr '14

Hello, I have a main window with elevel subpatches which create visual graphics in a GEM window. Is there a way in which I can sequence these subpatches one after the other? For instance, I would like [pd one] to start, and when that finshes, [pd two] starts, etc. Is there something I can put in the main window to trigger these sequences? I have included a screenshot of my main window. All the best.

2 1

Keeping Number box's
by kate sweeney 15 Apr '14

15 Apr '14

Hello, I am using GEM to create a graphical design video. I have completed a lot of it and have all my patches set up with the desired numbers etc. Yet everytime i close and re-open the project, all the numbers return to 0 which messes up my project big time. Is there a way to save the number box's as they are so they stay the same everytime the project is closed and re-opened? I have included a screenshot of before and after the project is closed and re-opened. Many thanks.

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Missing FLOSS Manual Files
by Nick Arner 15 Apr '14

15 Apr '14

Hello, I was hoping to download the example files from the "Building a Synthesizer<http://en.flossmanuals.net/pure-data/audio-tutorials/simple-synth/>" section of the FLOSS manual but it appears the files are missing (I got a "Not Found" error when I clicked on the download link<http://en.flossmanuals.net/floss/pub/PureData/SimpleSynthesizer/simple_synt…> ) Does anyone know where else I could find the files? Thanks! Nick -- nickarner.com

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Pd-list April 2014