How To Read An Audiogram Australia. An audiogram is a hearing test conducted under ideal listening conditions in a soundproof booth. Moving from top to bottom on the audiogram measures loudness in decibels (db).
Loudness and intensity can be read on the vertical axis. The lowest frequency tested is usually 250 hertz (hz), and the highest is usually 8000 hz. The further down on the graph, the louder the sound needs to be in order to be heard.
By testing your hearing at different frequencies, your audiologist can ascertain which sounds are heard and which sounds are not.
Understanding the information shown on an audiogram is easy. Then look to see if the bone conduction is in the normal range (above 20db). It graphs how it may (or may not) differ from the normal hearing range, by showing your hearing threshold levels at different frequencies. The audiogram helps to diagnose the degree and type of hearing loss, as well as help identify.