The human auditory system is a complex multilevel pathway of sound information processing. There are three distinct levels. The first one is the peripheral system. It deals with the mechanical vibrations of the inner ear. This vibration contains all the data of the incoming sound signal. The next level of information processing occurs in the nerve fibers which connect the inner ear to the brain and there are 30,000 of them. They convert this mechanical sound signal into neural representations. The final level of information processing is sound perception, which deals with the fundamentals of the physics of sound. The study of this perception is referred to as psychoacoustics. There are distinct Mathematical models which exist at all levels of auditory processing and give us a detailed understanding of the auditory system.
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