1. The sound collected by the ear is transmitted through the external ear canal to the eardrum. 2. The tympanic membrane converts the incoming sound into vibrations. 3.The auditory chain (auditory tuberosity) moves with the vibrations and transmits them to the cochlea. 4.The fluid in the cochlea begins to move, stimulating the hair cells. 5. The electrical signals generated by the hair cells are picked up by the auditory nerve. The hair cells at one end of the cochlea send low-frequency sound information, and the hair cells at the other end send high-frequency sound information. 6. The brain translates the electrical signals into sound.