alt Hacker NewsI know a consulting acoustical engineer who tracks down noise problems for companies and individuals. He goes on about the difficulty of even finding the source of low-frequency noise because of distance and vague directionality. In an extreme case, a rural family was tormented by a constant throbbing sound that turned out to be from a utility station 5 miles away.
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Back when industrial hammers and drop forges were still common in the US (so like 70yr ago now) it wasn't uncommon for people say 10mi away to not feel them but 20mi away to feel them due to the magic of resonances and whatnot.
It’s tempting to see it as people being hypochondriacs, but often when there is an issue only after learning about it you notice that it has been affecting you badly. Noise pollution and air pollution are but two most common examples.
Sure, positive mindset is important, but it can only take you so far when northern wind makes you cough because there is a dozen factories out there, or when you are chronically sleep-deprived because a noise source you might not even know exists switches on at ungodly hours.
Low-frequency sound waves can be brutal. Something can just happen to resonate where you are, but meters away everything is fine. To make things even more interesting, go low enough and you might not actually be hearing it per se, but feeling it with your body. Good luck explaining it to people who can enact change.
Relatedly, Benn Jordan investigated[0] certain sound that some refuse to believe is real yet others suffer from.
Yeah, one house I lived at would get these random silent vibrations that would rattle plates on shelves for about 15 to 20 secs.
Turned out it was one particular ferry in the harbor. It was a smallish catarmaran fast ferry and when it was coming in a curved path it was like a narrow beam of infrasound funnelled between the hulls swept around and rattled our place 5km away. It took quite a while to notice the pattern, but was a great party trick to see it coming and predict the rattle to guests.