Pd-list November 2024

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28 participants
27 discussions

RPI - PD & hdmi audio
by oliver 06 Nov '24

06 Nov '24

Hi, dear List ! It's probably a very special usecase, but i wouldn't know where else to ask. I thought maybe someone else here has encountered the same problem : For a project i'd like to use the audio signal from the hdmi connection to a screen attached to a Raspberry PI 4 (or 5 - same problem there). While this is working alright, when i play a file with mplayer or vlc (i.e. the audio is played out of the attached screen's speakers) i hardly can do this with PD. SYSTEM = RASPIOS 12 (bookworm), fresh installation PD = 0.53.1 (installed via apt) Here is what i tried to play audio over hdmi and the results: PORTAUDIO: 1.) if i select the hdmi device directly the console prints: "error opening audio: Sample format not supported" (chenging Samplerate doesn't help) 2.) if i select "ALSA: hdmi", audio works normally ! ALSA: 3.) selecting the hdmi device (hardware), i get a squeeking sound, like some sort of digital feedback (or a digital offset-signal played through the speakers). re-selecting the hdmi device changes the loudness of the audio feedback in an arbitrary way, but it never stops. Changing samplerate changes the feedback's pitch, but that's all. ======================================================================== So, right now i somehow stick to method nr. 2 but i was wondering, what's the matter with 1.) and 3.) Can anybody share some experience with PD & hdmi audio on a PI ? (For the record: I tested this on multiple PIs and the result was always the same. I never used hdmi audio before, so i probably never noticed. In my situation it would be handy, though) Thanks for all insights/thoughts/stories Best Oliver -- \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ /////////////// http://oliver.klingt.org /////////////// \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

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Compiling for alsa on Debian 11
by Yann Seznec 05 Nov '24

05 Nov '24

Hello! For various reasons I’m attempting to compile Pd on a headless raspberry pi 3 running Debian 11 (“bullseye”) (with no desktop environment). It compiles just fine, and I can open a patch, but when I run Pd it can not find any audio or midi devices. I believe this is because of the settings when I compile. I get the following messages if I run a patch: error: audio input device number (0) out of range error: audio output device number (0) out of range If I ask for the list of devices using “-listdev” it says: no audio input devices found no audio output devices found API number 4 no MIDI input devices found no MIDI output devices found When I configure the build, it gives me the following information: fftw: no wish(tcl/tk): wish watchdog: yes audio APIs: PortAudio OSS midi APIs: OSS libpd: no In the build instructions it describes OSS as a "historical precursor to ALSA, generally not used”. So I imagine that it is best avoided. One final clue - if I install Pd using apt-get, the audio works fine. However this is an older build (0.51.4) and I would like to use some of the new objects in the newer releases of Pd. I assume that this older build was compiled for alsa. Assuming that this is the root of my issue (a big assumption), I can’t seem to find a way in the build settings to use alsa instead when I compile. Is there any way to set that up? Otherwise, if I am misunderstanding the problem more generally I apologise and would gratefully taken any other suggestions. Thanks! Yann

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Key value list store
by Chris McCormick 05 Nov '24

05 Nov '24

Hi, I was wondering if anybody has implemented a key-value store in Pd which can be serialized to a list? I'd like to be able to send messages like: set foo value1 value2 value3 get foo (returns value1 value2 value3) del foo set bar valueX valueY set baz valueZ And then a way to dump and read entire key-value tables from the list with e.g. [dump( and [restore ...( where ... is the serialized form of the key values. I guess I can build this with [text] but I wanted to check if anybody has done it already. Cheers, Chris. -- https://mccormick.cx/

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Fwd: Problems reconnecting MIDI device on RPi
by Patko nytkophilus 05 Nov '24

05 Nov '24

> > >> Le 4 nov. 2024 à 11:00, Alberto Novello <albynovello(a)gmail.com> a écrit : >> >> so acconect works well with \ or ', space or not with MIDI Mix, no problem on the midi controller. My problem is Pure Data. I can't access Pure Data to connect. Which is weird as Pure Data is open and I can connect from its menu. >> > > can you connect from a terminal? > > >> I used the shell because [aconnects] doesn't let me see the error message. For now I have in my patch a [aconnect( -> [shell] and [aconnects]. I downloaded you package that is probably discontinued and used that. I tried finding [aconnect] but cannot find that external. I saw somewhere it's in ggee, I donwloaded added the path but doesn't find [aconnect]. >> > > I always end up replacing [shell] with something more ergonomic, like pd-lua or hcs/sys-gui, or rarely the beloved chat-GPT's python. Usually, aconnect by itself isn't not perennial since the midi connections changes for a reason. Anyway if the only alternative is about using shell scripting, maybe launching a script.sh would make things robust. > > Best regards.

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Problems reconnecting MIDI device on RPi
by Alberto Novello 05 Nov '24

05 Nov '24

Hi i'm developing a hardware and software laser synthesizer using pure data on RPi zero 2 W. The problem I'm facing is that when I disconnect my MIDI device the connection is lost forever. I tried using [aconnect 'MIDI Mix' 'Pure Data'( -> [shell] without success. I tried writing it directly in the Terminal and tells me that Pure Data is not recognised. So I tried Ioannes [aconnects] which also doesn't work. In the messages I put MIDI Mix 1 Pure Data 0 (or 1 either fails). Strangely when I reset it from the Pure Data preferences menu it works perfectly. Do you have any idea what am I doing wrong? Can you maybe help me figure it out? Thanks || | | ||| | || || | ||||| || | || | ||| | ||||| | | ||| | |||| | || |||| ALBERTO NOVELLO, PhD New Media Artist and Tenure Track Professor video snippets: *instagram* <https://www.instagram.com/_jestern_/> av compositions: youtube <https://www.youtube.com/channel/UCWq64lUkHQ9fIdHBUbN0_0w> site: jestern.com shop: bandcamp <http://jestern.bandcamp.com> audio: soundcloud <http://soundcloud.com/jestern> || | | ||| | || || | ||||| || | || | ||| | ||||| | | ||| | |||| | || |||| <http://vimeo.com/jestern>

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Re: Problems reconnecting MIDI device on RPi
by Dan Wilcox 03 Nov '24

03 Nov '24

Are you (re)starting Pd when this happens? I remember, a long time ago, I had a start script for Pd and MIDI connections which relied on sleeping a couple seconds after starting Pd otherwise the MIDI ports don't appear to ALSA when calling connect after, > On Nov 3, 2024, at 6:09 PM, pd-list-request(a)lists.iem.at wrote: > > Message: 1 > Date: Sat, 2 Nov 2024 11:49:45 +0100 > From: Alberto Novello <albynovello(a)gmail.com <mailto:albynovello@gmail.com>> > Subject: [PD] Re: Problems reconnecting MIDI device on RPi > To: IOhannes m zmölnig <zmoelnig(a)iem.at <mailto:zmoelnig@iem.at>> > Cc: pd-list(a)lists.iem.at <mailto:pd-list@lists.iem.at> > Message-ID: > <CAP9RyhP3URNXaiKwkynSEH6JuPuMQgOKEF5v7HkQs6bDQTFxxw(a)mail.gmail.com <mailto:CAP9RyhP3URNXaiKwkynSEH6JuPuMQgOKEF5v7HkQs6bDQTFxxw@mail.gmail.com>> > Content-Type: multipart/related; > boundary="0000000000000e4f840625ebd0c3" > > Hi thanks for your answer Iohannes!! I tried but could not find a way. I > attach my terminal attempts that report the error. I got better at the end > but still cannot see Pure Data for some reason. What could it be? -------- Dan Wilcox danomatika.com <http://danomatika.com/> robotcowboy.com <http://robotcowboy.com/>

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[PD-announce] d version 0.55-2 test1
by Miller Puckette via Pd-announce 01 Nov '24

01 Nov '24

Pd version 0.55-2test1 is available from https://msp.ucsd.edu/software.htm or (source only) via github: https://github.com/pure-data/pure-data . cheers Miller _______________________________________________ Pd-announce mailing list -- pd-announce(a)lists.iem.at To unsubscribe send an email to pd-announce-leave(a)lists.iem.at

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