Pure Tone Audiometry is used to determine the type and degree of hearing loss using the following tests:
Pure Tone Air Conduction Test
Used to determine the softest sound the client can hear at selected frequencies (pitches), from low to high. Ear phones or head phones are worn and sound signals are transmitted by air through each ear at varying degrees of loudness and pitch.
Pure Tone Bone Conduction Test
Used to test the sensitivity of the inner ear. A small vibrator is placed on the bone behind the ear; sounds are presented through the vibrator, traveling through the bones of the skull directly to the inner ear.
Both tests are displayed on a graph called an audiogram.