Local HA - using windows 11 client AiO PC as mic and voice center?

Hi,

I have a local setup, HA OS + HA on a mini PC. 3 AiO touch PCs (i5 6600t, lowend GPU) are wall mounted and connected as clients. I’m thinking of setting up voice recognition. id like to use the mic of the AiO PC, process everything voice related on it (on this or one of the AiO PCs? The mini PC is too slow) and make it work with HA.
But how? With a small LM? Did someone do something like this already? Any tips? I’m confused how to do it or if it’s even possible.

Thank you!
Staebchen