Pd-list August 2016

pd-list@lists.iem.at

55 participants
82 discussions

comport & port 0 ?
by rolfm＠dds.nl 26 Aug '16

26 Aug '16

hi, in another thread i explained that my Raspberry situates the Arduino on port 0. when comport is defined like [comport 0 115200] there's a message in the Pd console: port number out of range (1-99). but comport will connect with port 0. and it seems to work, at least the sending from Pd to the Arduino. my question: can i trust it? because i suppose the message means that the code is written for 1-99. rolf

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raspberry after boot 2 instances of Pd
by rolfm＠dds.nl 25 Aug '16

25 Aug '16

hello, (for me) strange problem of double instances of Pd. raspbian jessie Pi-3, headless, VNC on laptop. in /.config/LXEsession/autostart: @lxpanel --profile LXDE-pi @pcmanfm --desktop --profile LXDE-pi @puredata after boot in Terminal command 'top': PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1105 pi -7 0 12632 5992 5292 S 1.7 0.6 0:00.57 puredata 1106 pi -7 0 12632 6104 5404 S 1.7 0.6 0:00.57 puredata 938 pi 20 0 12544 8224 3428 S 1.0 0.9 0:00.63 Xtightvnc 1399 pi 20 0 5112 2544 2140 R 0.7 0.3 0:00.10 top 903 root 20 0 98104 25936 18128 S 0.3 2.7 0:00.47 Xorg 1100 pi 20 0 94364 24608 20920 S 0.3 2.6 0:00.59 lxpanel 1101 pi 20 0 94188 24776 20972 S 0.3 2.6 0:00.68 lxpanel ...... there are 2 instances of puredata (and also 2 lxpanels)! and only one GUI visible on screen. when i close the GUI, 1 Pd instance disappears, 1 remains (and a WISH). without puredata in autostart there's only 1 lxpanel. anybody experience with this? is there better way to get Pd automatically started at boot? rolf

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PD on Android
by Orm Finnendahl 25 Aug '16

25 Aug '16

Hi, I'm thinking about using an Anroid Device for live sound processing. It seems libpd would be a way to go but though I've been researching in the Web about it I couldn't get enough information, so I thought I'd ask here: What I need: - 1-channel sound input - 2-channel sound output - readsf~, tabread4~, arrays - netreceive, netsend for local osc communication with lemur or similar apps - standard vanilla objects for processing. My questions: - Is this already possible with existing apps, like DroidParty? - How is audio i/o concerning drop-outs etc. ? - DroidParty seems to be a little bit dated. Is it still working with current versions of Android? Does anybody use it or is there some alternative? I don't need low latency, a lot of cpu power or high quality i/o. It's basically recording/playback into buffers with some granular processing and playback of soundfiles. -- Orm

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find array
by Liam Goodacre 25 Aug '16

25 Aug '16

Is there any way of querying PD to find out if a given array exists? I'm thinking of a dynamic patching command that says "if this array doesn't already exist, then create it". Unfortunately, the "multiple array defined" message prints to the console, not an individual object.

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RME Fireface 802 problem (aka problem with PA and Jack on OS X)
by Marco Matteo Markidis 25 Aug '16

25 Aug '16

Dear all, two months ago I reported this problem about problem turning on DSP on OS X with PortAudio and Jack (with Jack Pilot). The last week I had a gig and I get the same problem. The configuration was: start RME Fireface 802 and then start Pd, turn on DSP, get this problem. After a reboot, I obtain the same problem, but turn on RME, start Pd, restart RME, DSP manages to start. So I would like to report this problem with this sound card. With RME Fireface 800 I never get this problem, only with 802. Setup: -) RME Fireface 802 (Firewire 800 connection) -) Mac early 2011 with Yosemite -) Pd 64 bit (compiled by myself) Best, Marco 2016-06-14 16:08 GMT+02:00 Marco Matteo Markidis <mm.markidis(a)gmail.com>: > so what was the error message? > > I start Jack from JackPilot on OS X, and Jack fails to start, not Pd fails > to connect to Jack. > >> so when using Pd with jackd: >> - start jackd (e.g. using qjackctl) >> - then start Pd > > Yes I did it properly. > >> it seems like you are using the "PA" acronym for different things. >> Pd has a PortAudio backend (s_audio_pa.c), but afaik this does not >> involve any service/daemon/programm which could be refered to with "and >> magically PA starts". > > Mmm no. With PA I mean PortAudio exclusively. When I started Pd it froze > and looking at system monitor it stops at pa_send_dacs at some cerror > function call (maybe some pthread init, but I not remember properly). > Just to be clear: I started Pd with -pa flag but when I switch on the DSP > Pd froze and on system monitor I saw that Pd was locked at some error. > With Jack, Jack didn't start directly. > > So, what I'm saying is that can be an idea put a red Pd error con parent > window in order that the user can understand that it is a PA error and not > a Pd error. > > My solution was to reboot and everything worked properly, in this sense > "PA magically starts". > > Marco > > > 2016-06-14 14:58 GMT+02:00 IOhannes m zmoelnig <zmoelnig(a)iem.at>: > >> On 2016-06-14 12:57, Marco Matteo Markidis wrote: >> > Dear list, >> > >> > Sunday I had a gig in Poland. After connect all cables, mixer and sound >> > card I started my Pd patch without problems. When I switched on the DSP >> Pd >> > frozen and I didn't understand really what happens. After a while, I >> > started the system monitor and I saw that in calling PA it stops with an >> > error. I tried to start also Pd with Jack and in this case Jack didn't >> > start properly giving me an visible error message. >> > So I rebooted and magically PA starts. >> > >> > I'm sending you this email just to say that can be a good idea in this >> case >> > to report an error message very visible on Pd parent or something like >> > this, in order to understand that it is a PA error and probably an >> error to >> > access to sound card or something like this. >> > >> > I'm sorry to cannot report a complete log message, but I remember that >> Pd >> > stops at pa_send_dacs function in s_audio_pa.c file. I hope you can >> > understand that in a real live situation with Wayne Horvitz waiting that >> > you finish your soundcheck it's not a proper occasion to get log message >> > file and stuff like this. >> >> it seems like you are using the "PA" acronym for different things. >> Pd has a PortAudio backend (s_audio_pa.c), but afaik this does not >> involve any service/daemon/programm which could be refered to with "and >> magically PA starts". >> >> there is PulseAudio on linux, which can be used via the PortAudio >> backend, but afaiu you are on osx so i don't think that this applies. >> >> > >> > Best regards and sorry if this mail can be off topic. >> > >> >> i don't think it is off-topic, but probably more interesting for pd-list >> (rather than pd-dev), as it is no more development-specific than any >> other bug and more people could share there experiences. >> >> therefore i'm answering via pd-list... >> >> >> fgasmdr >> IOhannes >> >> >> _______________________________________________ >> Pd-list(a)lists.iem.at mailing list >> UNSUBSCRIBE and account-management -> https://lists.puredata.info/ >> listinfo/pd-list >> >> >

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lock free problem
by Marco Matteo Markidis 23 Aug '16

23 Aug '16

Dear all, I'm developing an external that has two threads, one audio thread and one worker thread. The audio thread contains all usual stuff; while the worker thread computes calculations (I need knn searches and so on for my resynthesis) and put them in a data structure. At the end of calculations, the worker thread atomically CAS the data structure. Actually, I'm using a [readsf~]-like mechanics with pthread signal to communicate between threads. I would like to remove lock and use a lock free system. I don't know if it feasible. Moreover I don't know if it has some sense, because Pd locks a mutex in scheduler and I don't know if a lock free implementation could be a right solution. In the case it could be a solution, I will start with a SPSC circular queue and I will use atomic CAS to swap the data structure. Best regards, Marco

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kyma x pd and others?
by Alexandre Torres Porres 23 Aug '16

23 Aug '16

Hi, any of you guys into Kyma? So many questions about this thing I've never seen... It's quite expensive and I wonder where the buck goes to... software design? User experience? Whatever it is, it doesn't seem its dedicated hardware justifies even half the cost... c'mon, 3k for what kinds of processors? They won't even tell what kind of processors they are... the lack of transparency is such that the only specs of the processor is measured in "capstones" whatever that is... Ok, it might be the best thing since cheese, but they don't put any real effort in selling with actual numbers/data... which raises so many questions... since there's nothing else apparently today that has dedicated hardware for audio, I can only imagine that a dedicated hardware makes sense for a little less latency, which is also not a big deal these days... A dedicated low latency hardware like 'Bela' (less than 0.5ms) is much cheaper, does the price of kyma reflect a corresponding power in relation to its cost difference? So it seems the price is more about the convenience, the user experience and the software... now, since I'm here, what can it do that pd can't? Or any other plugin / computer music tool out there, IRCAM stuff icluded... Csound, Supercollider et all? thanks

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Re: [PD] PdCon16 NYC Calls are open
by Liam Goodacre 23 Aug '16

23 Aug '16

Hi Jamie I'd like to submit a paper for this, but it's doubtful that I can afford to come to New York in November. Will you be giving selected authors the chance to present online rather than in person? From: Jaime Oliver Sent: 21 July 2016 08:13 To: Pd-list Subject: [PD] PdCon16 NYC Calls are open Dear All, Please check out the calls for papers, works, and proposals for the upcoming Pd Convention. http://www.nyu-waverlylabs.org/pdcon16/calls/ All the best, J

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knobs in 0.47
by Liam Goodacre 23 Aug '16

23 Aug '16

I can't seem to get the knob object working in 0.47. I've tried both the flatgui and the moonlib versions, but neither of them will load. Other objects in both libraries load fine, so I think it's a problem with the externals themselves rather than the declaring. Any hints with this? Note that I'm still on "test 2", so maybe things have changed.

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/extra/ folder loading and path setting issues on pd for Mac
by Angelo Arcadi 22 Aug '16

22 Aug '16

Dear list, I am not able to load the externals placed by deken in the folder /Applications/Pd-0.47-1-64bit.app/Contents/Resources/extra when running pd 0.47.1 for mac. When I try to load such folder from Preferences->Path, pd does not allow me to select it. How can I load the externals therein? Why they are not automatically loaded since they are in /extra/? Thanks in advance Best Angelo

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Pd-list August 2016