Then why bring up repetitive motion if it has nothing to do with making a lot of racket in the background?
That is what the original thoughts were, from what I can tell. This appears to be two different topics tbh.
I completely agree with Still Tired, where the focus needs to be on the call, not some meditative devices, methods or whatever to relax the reader.
Anything outside of focusing on the call, is obviously not focusing on the call.