If you've ever seen a Jewish man with strings hanging out of his clothing, this is probably what you were seeing. There is no particular religious significance to the tallit (shawl) itself, other than the fact that it holds the tzitzit (fringes) on its corners.
Sound pressure or acoustic pressure is the local pressure deviation from the ambient (average, or equilibrium) atmospheric pressure, caused by a sound wave. In air, sound pressure can be measured using a microphone, and in water with a hydrophone. The SI unit of sound pressure is the pascal (Pa).
Noise sensitivity. The range of sound we can hear is phenomenal; some people can literally hear a pin drop and yet most can still tolerate loud sounds such as heavy machinery. Hyperacusis is an unusually low tolerance to ordinary environmental sounds, which are tolerable to listeners with normal hearing.