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33278 discussions

Re: [PD] Number atom box limits overstepped
by IOhannes m zmölnig 11 May '23

11 May '23

On 5/11/23 16:53, William Huston wrote: > Come to think of it, I think we've had this conversation before, > years ago. > > I guess I just keep needing to be reminded of the PD Paradigm. i wouldn't call it "the Pd Paradigm". i would like it to be *the* Pd paradigm, but I think there's evidence that it is not (generally speaking). fgmdsa IOhannes

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Audio latency on linux
by Orm Finnendahl 11 May '23

11 May '23

Hi, for a project involving controlled and tuned feedback through the Audio Interface, we need very low latency (~ 9-10 ms roundtrip through the analog ins/outs) for it to work properly. We did some tests using OSX and linux based systems with different audio interfaces. On OSX I can get down to 16 ms with pd (44.1 kHz sr); using Max/MSP we can get below 10ms with a vector size of 32. On Linux the lowest I can get with pd is 29.33 ms with 48k samplerate (this is using alsa; jack is ~34 ms). jack_delay reports a 9.6 ms roundtrip delay through the analog outputs with a vector size of 64, so it is not the driver and in principle should be possible to get a lower latency in linux. I don't know if jack_delay is implemented with additional i/o buffers but even if pd adds an extra period in both directions that should be well below 30ms (64 samples are 1.33 ms at 48k). The added 20ms in comparison to jack_delay appear quite large to me. I even tried to compile pd with a lower blocksize (I changed DEFDACBLKSIZE in s_stuff.h and DEFSENDVS in d_global.c and can get down to a vectorsize of 32 without distortion at the audio interface), but that doesn't change the i/o latency at all. I didn't yet study the alsa/jack related code. Can anyone shed a light on this? It'd be much nicer to use pd for this than writing a dedicated app doing all the dsp (or using Max/MSP on OSX :-( -- Orm

4 3

change variables in struct?
by Forrest Curo 11 May '23

11 May '23

If I want to use a working example struct (from the datastructures help patches) I can readily change the values of the variables it uses. What about changing the names of those variables to something more meaningful for their use in a new structure? Will I need to construct the dreadful patch from scratch? Forrest Curo San Diego

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Audio latency on linux
by Orm Finnendahl 10 May '23

10 May '23

Hi, I found it: The delay setting in the audio settings is the culprit: It was set at 25 ms and setting is to 0 ms will reduce the latency. Sorry for the noise... -- Orm _______________________________________________ Pd-list(a)lists.iem.at mailing list UNSUBSCRIBE and account-management -> https://lists.puredata.info/listinfo/pd-list

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pd~ set audio API on linux
by Orm Finnendahl 07 May '23

07 May '23

Hi, when using pd~ on linux and turning dsp on, the subprocess outputs "no audio API specified" to its pd window. It works receiving/sending audio from/to the parent process but in my special use case it'd be even nicer to input/output audio directly to the interface, which works as soon as I specify the audio API in the media prefs of the subprocess. Is it possible to specify the jack audio API somehow to the subprocess via message and/or params to pd~ to automate this? -- Orm

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[menubutton] bug on W 11 machine
by oliver 03 May '23

03 May '23

Hi, just tried my (bad) luck on a new Windows 11 machine, and found the [menubutton] external of the TOF library to produce an (i guess) TK error. i have the latest PD (0.53.2) and the latest TOF version (0.4.2.) when i open the helppatch for [menubbutton] i can clear and fill the menu but as soon as I select something from it, i get a (red) error message in the console: menubutton0000021392f40970: no such object It seems to be Tk related, doesn't it ? For backtracking, i tried older versions of PD (on the W11 machine), and according to this, the error starts with version 0.52. With PD 0.51, [menubutton] works. I already files a bug report at Fred-Jan's github site, but just for the record: has anybody else experienced this ? Best Oliver -- \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ /////////////// http://oliver.klingt.org /////////////// \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

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pd for android and abl_link~
by Orm Finnendahl 01 May '23

01 May '23

Hi, I'd like to build MobMuPlat with pdlib including the abl_link~ external. As far as I've understood, the original MobMuPlat code uses jcenter which is not active anymore and has been replaced by maven. It seems I need to add the maven repository to MobMuPlat's build scripts and somehow add the dependencies of abl_link~. Can anybody give information or point me to references how to accomplish this? Any help is appreciated! -- Orm

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Re: [PD] hardcoded samplerate in audio example
by Dan Wilcox 30 Apr '23

30 Apr '23

If possible, I would suggest leaving something from the "old way" as a reference, although it wouldn't be connected by default. > On Apr 29, 2023, at 9:42 PM, pd-list-request(a)lists.iem.at wrote: > > Message: 2 > Date: Sat, 29 Apr 2023 16:42:03 -0300 > From: Alexandre Torres Porres <porres(a)gmail.com <mailto:porres@gmail.com>> > To: Patco <colet.patrice(a)gmail.com <mailto:colet.patrice@gmail.com>> > Cc: Miller Puckette <mpuckette(a)cloud.ucsd.edu <mailto:mpuckette@cloud.ucsd.edu>>, pd-list(a)lists.iem.at <mailto:pd-list@lists.iem.at> > Subject: Re: [PD] hardcoded samplerate in audio example > Message-ID: > <CAEAsFmgfTBtWc5sOX6QhNOiC9Xrg_d4Xeto=QUYCDSrvBgJHRQ(a)mail.gmail.com <mailto:CAEAsFmgfTBtWc5sOX6QhNOiC9Xrg_d4Xeto=QUYCDSrvBgJHRQ@mail.gmail.com>> > Content-Type: text/plain; charset="utf-8" > > Now that I actually had a real glimpse, I see that the original patch > expects a message with the sound file name and its sample rate. Indeed this > is an old practice before soundfiler could give you the sample rate, so > this example can be modernized so as to not require the user to specify the > sample rate of the file. Anyway, I already opened an issue and will take > care of this in my docs branch. -------- Dan Wilcox @danomatika <http://twitter.com/danomatika> danomatika.com <http://danomatika.com/> robotcowboy.com <http://robotcowboy.com/>

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hardcoded samplerate in audio example
by Patco 29 Apr '23

29 Apr '23

Hello, I've found something awkward in all fft patches from 03.audio-examples that leads to mistakes. Samplerate is hardcoded to 44100, so this wouldn't work correctly when opening soundfiles having another samplerate. This should be corrected by using [soundfiler] second outlet instead of hardcoding samplerate.

3 5

Installation with Pure Data and Faust
by Jérôme Abel 29 Apr '23

29 Apr '23

Hi there, I just want to share a recent robotic installation i've made with Pure Data and Faust, "Sentinelle" : https://jeromeabel.net/workshop/sentinelle/ It is very simple in fact, but I've enjoyed integrated first objects with Faust and pd-faustgen. Many thanks for all Faust/Pd developers, maintainers, it's a new playground for me. Best. Jerome Abel / https://jeromeabel.net

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