Not able to communicate my DAW (Reaper) and Matlab using UDP

Eventhough I am following the steps as is explained here: Communicate Between a DAW and MATLAB Using UDP I am not able to even make the UDPSender plugin of the example work. I think that my problem is on step 2, as i am working on macOS and don't really know how to set the run-time library path. ¿Is there any extra configuration that I am missing?

Thanks.

[Jimmy Lapierre]

Could you elaborate on what is failing? Are you getting an error? I would like to give this a try.

[David Montalbán Caamaño]

Not really any error, I am setting the run-time library in my terminal and then opening Reaper from the same command terminal. Then I add the UDPSender VST in the channel 1 of the mixer and i drop and play an audio track. After that i am running the HelperUDPPluginReceiver but nothing happens, it just stops after a few seconds but no spectrum analyzer appears.

[David Montalbán Caamaño]

I checked with Wireshark to see if there is any UDP traffic through the 20000 port when de UDPSender plugin is being used, but nothing is send or received.

Answer 1

[Sanjana]

Hi David,

I understand that you are facing an issue with setting up the “Run-Time Library Path” on macOS System.

According to step 2 in the documentation of the example, you can set the “Run-Time Library Path” on macOS Systems by adding the following command in a MATLAB “startup script”.

setenv DYLD_LIBRARY_PATH matlabroot/bin/maci64:matlabroot/sys/os/maci64

Please refer to the following link, for writing a user-defined MATLAB “startup script”,

https://www.mathworks.com/help/matlab/ref/startup.html

Please refer to the following link, for another approach using the “. plist” file to set the environment variables on macOS Systems,

https://www.mathworks.com/matlabcentral/answers/170268-how-do-i-set-environment-variables-on-mac-os-x

Hope this helps!

Regards,

Sanjana