"..an un-natural.....noise floor..."
I’m not so sure I’ve Ever experienced that.....best up to today is in the middle of N.D., camped in the middle of nowhere, quiet enough you could hear your heart beat..
Next level down would be ’the one yet to be experienced’, which I’m in no hurry to experience, and ’noise’ would become irrelevant.
...more interested in the Art of Noise v. ’noise’ per se, frankly.. ;)