This question may seem a bit off-the-wall, (or perhaps off-the-ceiling;))
I live in a 1970's era wood frame apartment building. My upstairs neighbor stomps around so violently that his stomping actually shakes my bed frame. It feels as if someone were kicking my bed when I try to nap in the afternoon. I'm disabled by chronic health problems that require me to rest often during the day, so, as you can probably imagine, this constant disruption of my rest is having an adverse effect on my health.
I've contacted both the noisy neighbor and the landlord, but to no avail. It turns out they are old friends, and both insist that I am imagining the noise.
I'd like to make some recordings that would document the intensity of my neighbor's stomping, but wonder how to go about it.
What I'm thinking of doing is buying a digital recorder and some kind of microphone that would register the stomping vibrations. I think that these vibrations are probably below the range of most microphones, because I feel them more than hear them. They are more like concussions rather than like sounds.
A local music store suggested I buy something called a bottle cap mic.
I'm on a small monthly Social Security disability pension, so cost is a major factor.
I'd be grateful for any suggestions or advice on how to document this problem.
P.S. I imagine that the first reaction to reading my message might be: "Why don't you just move?" The answer is that I receive a rent subsidy from the city, and the red tape involved in moving is a bureaucratic nightmare. Add to that the stress and expense of moving (I don't have a car), the difficulty of finding a livable apartment in the price range the city is willing to subsidize, and considering my poor health and lack of financial resources, and you might be able see how I could feel that I should exhaust all possible remedies before undertaking the daunting task of moving.