Whole house microphone / audio distribution?

What are we using to capture audio for commands?

I’d like to be able to command HA to do whatever from any room without any mainstream cloud devices.

I imagine a unidirectional mic in each room, embedded somewhere, that feeds into a mixer and then into HA.

Is there a recommendation for this? High end and low end options are acceptable considerations.

Did you take a look at rhasspy yet?