Understanding your audiogram
The audiogram is a graph representing a person's hearing level. the curve shows the threshold hearing level in dB HL. These are the quietest sounds a person can hear at a given frequency reletive to normal hearing people. Audiograms are produced by audiologists, ENT practitioners, and hearing instrument or phoniatrics specialists. They are the key tool used to determine the type and level of hearing loss in each ear.
This test consists of presenting sounds at different levels and different frequencies to the patient. The patient indicates the sounds he or she perceives so that the lowest level (hearing threshold) for each frequency can be determined.
The hearing threshold measured at each frequency is plotted on an audiogram with the level of hearing loss expressed in decibels set along the vertical axis (low to high loss, from top to bottom), and the frequency in hertz along the horizontal axis (low pitches to high ones from left to right).
Different marks can be used on the graph to distinguish between the types of measurements taken and which ear was tested.