sound travels through the auditory canal, towards the eardrum where the sound is converted to mechanical energy this then passes through the middle ear consisting of three interconnecting moveable bones called ossicles. these bones push on the opening of the cochlea that vibrates the fluid inside the inner ear, thus amplifying the mechanical energy that travels towards and into the cochlea. once inside the cochlea millions of hair cells called basilar hairs. these cells vibrate at frequencies up to 20000 times per second. this is than transmitted as an electrical signal to the brain, that is interpreted as sound.
