I think you are spot on with that.[XAP]Bob wrote:If it's mainly in the living room then I'd suggest there are some local geographic features which assist hearing in that location... And the sounds get trapped. It's basically white noise, so even minor internal reverberation will generally boost the volume
I could hear it during the night whilst in bed as well.
Sounds like a distant roar from a busy motorway. Many years ago, I was on a week's course at Heckfield Place, Hants learning about a new command system for the new Type23 frigates. In those days Racal were conducting courses there.
Looks like it's been restored and is now a luxury hotel. Not a bit like it was when I was there in the early 1990s.
https://www.heckfieldplace.com
Lovely old grange of a place with beautiful gardens and woodlands. In the evening or two, I took a stroll around, but the whole effect was spoiled by the roar of M3. No doubt it's still the same, or even worse.