2. Middle Ear
The vibrations travel to the eardrum, which is connected to three tiny bones in the middle ear called ossicles. The ossicles naturally amplify the sound before it enters the inner ear.
3. Inner Ear
This part of the ear contains a fluid-filled cochlea lined with thousands of tiny hair cells. As the fluid moves in waves along the cochlea, the hair cells bend and trigger impulses through the auditory nerve. The number of hair cells bending, and their location, determine the frequency and intensity of the sound.
4. The auditory nerve
These impulses travel up to the auditory nerve to the brain, where they are interpreted as meaningful sounds.