Sending data from TD to Unity using UDP

In TD, I analyse the sound of 6 differents microphone using the audioanalysis from the palette and I want to send the data to unity to modify a particle system (VFX) with the data received from TD.
However, it seems I receive the data as base64 and I don’t know how to use this format in Unity, is there a way to get ASCII or UTF8 instead?
Thank you so much for your time and your answer

sound2_forum.toe (904.9 KB)