pressure waves in the air are objective. Your conscious experience (“percept”) of them are subjective and contingent on your current mental state, health, atten

pressure waves in the air are objective. Your conscious experience (“percept”) of them are subjective and contingent on your current mental state, health, attention, etc. Psychoacoustics is a real wild trip. my point was that in order for you to hear a bass guitar sounding noise, no external stimulus is required.