@jhills “During the day, I have to strain to hear the ticking of any of our clocks. Setting on my audio sofa, at night (If I listen for) I can clearly hear the distinct and unique ticking of nearly every clock in the house”…
Yes, excellent point. Most are so immune to all the subtle background noise… your observation is exactly what it takes to be aware of all the components of the ambient room noise floor. When coupled with a quieter power grid you get the best time to listen.