Psychoacoustics is a branch of science that studies the human perception of sounds. It is very useful for quantifying what standard indicators will have difficulty to describe, such as annoyance or discomfort for example. Do you want to know how the sound of your product is perceived?
I can help you by organizing a jury testing campaign:
Definition of a psychoacoustic test protocol.
Development of a test interface.
Recruitment of subjects and supervision of the test.