Looking at Sensory Disorder as a Physics Problem

I am very concerned about sensory disorder being looked at as a mental health issue rather than, what it actually is, a physics problem. It is a well known fact that the shape and density of objects changes the way they carry sound. Most people are sensitive to the sound of fingernails on a chalkboard. Some people find other sounds so painful it affects their perspective of pain. Looking at the actual physics of the ear should allow scientists to actually understand why this is happening and design hearing adjustment devices to help people hear what they need to hear instead of just hearing noise.
This is a link to lecture notes showing equations to help predict how things will sound.
https://engineering.purdue.edu/ece103/LectureNotes/SRS_Pipe_Problems.pdf