Shar, oh my goodness, but you could be me!! I too am finding that I cannot sleep many nights because of a neighbor. From Nov 28-Dec 28, 2017, I lived in a senior apt and had to leave and return to my mobile home in a senior park here in Leesburg, FL. At that senior apt, the mgmt allowed the old couple to play their TV with surround sound nearly 24/7 -- I was told they had 7 speakers w/subwoofer. I found after less than one week, I was not sleeping and reported sleep-deprivation to the mgmt. They told me I must be overly-sensitive to sounds, that no one had complained previously. I told them I could explain no one else complaining although there was that night at 11pm when I stepped into the hallway to ascertain the sound and heard a woman yell from down that hall, "turn that thing off already." And, the day I was packing my car, a male resident from the 1st floor stopped me to ask why I was moving ... come to find out that he too, from 3 floors down, had been hearing that TV + surround sound more loudly from 2am-5am!! Well, I am back in the senior park and seem to have become a bit more sensitive to low frequency sounds at night. I have been experiencing such a noise in the am hours, 1am-7am, and had to go outside several times this past week to nail down the origination. Come to find out, I was aware of this sound during the past 2+ years I've lived here. I suspected where it might be originating ... but didn't come outside to find the source. 2 doors down from me, an older woman says her TV in the back bedroom is her pacifier and runs it throughout the sleeping hours and then cranks up the volume on the TV in the living room. I am hearing it now!