I'm a student studying sound and i and recording sounds this is one of the recordings. This sound was made by having the microphone near a fridge door that was opening and closing.
Request, drop a pill into fizz water and recorde the disslove. I recorded the whole process: open the pill, open the bottle, drop the pill several times, fill the glas with pop-water, drop the pill and waiting for dissolve.
Please excuse the naming convention. It is for a university project that i had to begin with my student number\. This is a recording of a pill container being opened and closed.