A complete hearing evaluation typically consists of several different types of hearing tests. An audiometer test is used to measure hearing sensitivity at different frequencies. Results are plotted on an audiogram.
A bone conduction test relies on vibrating tuning forks placed behind each ear to determine whether the hearing loss is conductive (a result of problems in the outer or middle ear) or sensorineural (associated with damage to the inner ear).
Other evaluations frequently administered include speech tests, tympanogram (to test eardrum function) and an acoustic reflex test to measure contractions of the muscle that protects the ear from loud noises.