Your ears are extraordinary organs. They pick up all the sounds around you and then translate this information into a form your brain can understand. Your sense of smell, taste and vision all involve chemical reactions, but your hearing system is based solely on physical movement.
The ability to recognise sounds and identify their location is possible thanks to
the auditory system. That’s comprised of two main parts: the ear, and the brain.
The ear’s task is to convert sound energy into neural signals; the brain’s is to receive
and process the information those signals contain. To understand how that works
follow a sound on its journey into the ear in this TEDEd video.