Let's discuss the structures of the ear and how the ear transforms the mechanical wave into electrical signals. So the ear can be generalized, it can be broken down into three sections. We have the outer ear, we have the middle ear, and we have the inner ear. Now let's begin with the outer ear. The outer ear basically contains a section known as the pinna, or the oracle. So this entire section, including our ear lobe, is known as arabina.