Sound waves travel into the ear canal and reach the eardrum. From there, sound vibrations go through the middle ear bones and into the inner ear. The inner ear is shaped like a snail and is also called the Cochlea, which is about the size of a pea and contains appoximately 20.000 tiny hair cells which play a vital role in hearing. These hair cells are located in cochlear canals filled with fluids. Vibrations in the fluid cause these hair cells to vibrate and generate nerve impulses that then travel to the brain via the hearing nerve. And this is where the hearing actually happens. The brain tells you that you are hearing a sound and what that sound is.

When the hair cells are damaged they cannot be repaired but the outcome, which is hearing loss, can be restored by hearing aids. New technology hearing aids have micro processors with faster and higher performance, enabling the users to hear more clearly in different sound environments and situations with background noise.