What is Audiometry?

Audiometry is a specialized test designed to check the functionality of our hearing. Dr. Light will play specific pitches of sound within the normal range of hearing frequencies. The results from audiometry are then displayed in the form of an audiogram. The audiogram illustrates your hearing ability by showing the hearing threshold at various frequencies. Hearing threshold is an indication of how soft a sound may get before it is unable to be heard.

An audiogram can be interpreted by knowing some basic information. The vertical axis of the audiogram represents sound volume or intensity, which is measured in decibels (dB). The further down the axis, the louder the sound becomes. This corresponds to turning up the volume on a radio. Zero decibel at the top of the axis represents the softest sound a person is normally able to hear. The horizontal axis of the audiogram represents sound frequency or pitch measured in Hertz (Hz).

Sound frequency gradually increases the further to the right along the axis. This movement can be compared to playing on the left side of a piano and gradually moving to the right side where the tone becomes more and more high-pitched. Frequencies between 500 Hz and 3000 Hz are most commonly used during ordinary conversation. During a hearing test, the results are recorded on the audiogram by means of red “O”s for the right ear and blue “X”s for the left ear. The resulting red and blue lines reveal hearing threshold for each ear. Please see examples of normal and abnormal hearing below: