Pre-selecting audio interface when patch opens.

Reply to Pre-selecting audio interface when patch opens. on Fri, 22 Dec 2017 01:33:48 GMT

toddak — Fri, 22 Dec 2017 01:33:48 GMT

I'm just working on a patch that needs to start automatically when opened, which is working fine so far. The only thing I have to continually set is in 'Audio Settings' whereby I always have to change the input and output to read:

'USB Audio CODEC (hardware)'.

I assume there is a message that can be sent internally to get this to happen, but I've got no idea what it is. Can anyone help?

Many thanks.

Reply to Pre-selecting audio interface when patch opens. on Fri, 22 Dec 2017 22:34:00 GMT

whale-av — Fri, 22 Dec 2017 22:34:00 GMT

@toddak If you are using Windows you can start your patch, and open Pd.exe or Pd.com with flags that set all the audio settings from a "batch file". I start all my "show" patches like this, as I am using different sound cards for different patches.
Like......

"C:\Program Files (x86)\pd\bin\pd.com" -path C:\Users\David\Desktop\PDMusic\Minx -path C:\Program_Files_(x86)\pd\extra\readanysf~\ -r 44100 -asio -nomidi -audioindev 20 -audiooutdev 15 -inchannels 32 -outchannels 22 -audiobuf 2 -blocksize 64 -callback -nosleep -open Minx_Run.pd
exit

If you are using some other OS I imagine there is a similar solution.

If you are using extended then you can bang messages into [mediasettings/audiosettings].
In vanilla I think you will have to use the [audio-dialog( message to Pd......
set_audio_parameters.pd
Bang the [audio-properties( message at the bottom right, and press OK when the window opens, to get the current settings list.

David.

Reply to Pre-selecting audio interface when patch opens. on Wed, 03 Jan 2018 05:06:24 GMT

toddak — Wed, 03 Jan 2018 05:06:24 GMT

Hey David thanks for the reply.

I'm running Raspbian as its running on a raspberry pi, and using Vanilla PD. I opened your patch, but the 'mediasettings/audiosettings' doesn't seem to work on Vanilla.

If I bang the settings in the bottom right hand corner, it does open up the same settings as the last time I used the patch. But I'd like a way too make it a definite rather than a potential unknown (this will be operated as part of an installation and I won't be there to start up each day).

I think I can use flags when opening through terminal to get it to boot the way I need to, similar to your suggestion. I was just hoping I could keep everything within PD, as I find that much easier if I need to run patches on different systems

Reply to Pre-selecting audio interface when patch opens. on Wed, 03 Jan 2018 05:44:30 GMT

ingox — Wed, 03 Jan 2018 05:44:30 GMT

@toddak i believe you can also set the audio setting startup flag in Preferences > Startup... menu.
https://puredata.info/docs/faq/commandline

The [audio-dialog( message to pd should also work from inside a patch, but is a bit hacky solution.

[; pd audio-dialog 0 0 0 0 1 0 0 0 0 0 0 0 2 0 0 0 44100 25 -1 128(

The values are:

[; pd audio-dialog indev1 indev2 indev3 indev4 inchan1 inchan2 inchan3
inchan4 outdev1 outdev2 outdev3 outdev4 outchan1 outchan2 outchan3
outchan4 samplerate delay callback blocksize(

http://forum.critterandguitari.com/t/audio-settings-set-pure-datas-delay-msec-for-one-single-patch/1337/8

Reply to Pre-selecting audio interface when patch opens. on Wed, 03 Jan 2018 08:35:31 GMT

whale-av — Wed, 03 Jan 2018 08:35:31 GMT

@toddak As @ingox says (and I didn't make clear in my post........ ) once you have the settings as you want them, and have recovered them using the bottom right bang, you can copy that message into your patch........ Then use a loadbang to send that message from the patch when it starts...... to [s pd]. I disconnected that (bottom left) as it is dangerous unless you really want to use it...... but in your case it is exactly what you want to do.
David.

Reply to Pre-selecting audio interface when patch opens. on Thu, 04 Jan 2018 03:47:23 GMT

toddak — Thu, 04 Jan 2018 03:47:23 GMT

@whale-av Thanks again for your help, and for explaining your patch further.

I ended up just using flags in the startup for the rpi, which to my amazement worked first go, and seems to be a solid solution for the time being. Good to know there are other options thought!

Reply to Pre-selecting audio interface when patch opens. on Fri, 28 Mar 2025 16:13:10 GMT

kazeko — Fri, 28 Mar 2025 16:13:10 GMT

@whale-av
hello there
did you ever tried "audioaddoutdev -- add an audio output device by name" on linux ?
i had exact same problem on my RPI and PD to be able to alway use 'USB Audio CODEC (hardware)' whatever hardware card number it had.
i tried audioaddoutdev 'USB Audio CODEC (hardware)' ,audioaddoutdev "USB Audio CODEC (hardware)" ,but none seems to work

bests

Reply to Pre-selecting audio interface when patch opens. on Fri, 28 Mar 2025 17:41:16 GMT

whale-av — Fri, 28 Mar 2025 17:41:16 GMT

@kazeko I did a bit more work on it here....... https://forum.pdpatchrepo.info/topic/14240/pure-data-and-pi4-with-usb-audio-interface/12
As so often, it might be hard to remember how it works, but I think I designed it to select an interface automatically (by name rather than the position in the Pd Media tab list) as a patch was opened.... but it needs the external [audiosettings] from the mediasettings library.
It seems that the librarywas available for the RPI4.
David.