The branch of science which is concerned with the study of hearing and related disorders is called audiology. The doctors who specialize in treating those with hearing loss and other hearing ailments are known as audiologists. Hearing tests, like Weber test and Rinne test, otoacoustic emission measurements, and electrophysiologic tests are commonly used to assess a person’s hearing abilities. Hearing aid and cochlear implant are two of the most common devices that assist in hearing disorders. Hearing aid is a device which improves a person’s hearing by making sound audible to the indivisual. A surgically implanted neuroprosthetic device which provides a sense of sound to a person having severe hearing loss is known as a cochlear implant. This book elucidates the concepts and innovative models around prospective developments with respect to audiology. It studies, analyses and upholds the pillars of audiology and its utmost significance in modern times. This book includes contributions of experts and doctors which will provide innovative insights into this field.