I found at least 4 topics on this while I was looking for this one, and I know there was another one where OM said that being able to hear it is a good “benchmark” that it enters your aura and therefore affects you, but that one wasn’t even in the ones I found.
So… I think everything important has been said already :D
https://forum.enlightenedstates.com/t/will-fields-work-on-low-volume/14590?u=monkeyowl