Reading an Audiogram

The results of hearing tests are charted on an audiogram. Audiograms map the degree of hearing loss, measured in decibels (dB), for defined key frequencies, measured in Hertz (Hz). Decibel curves describe the individual’s hearing threshold compared to the normal hearing average. Due to individual differences, all thresholds from 0–20 dB are considered normal.

Graph of Audiogram

Interpreting an Audiogram.

Symbols on the audiogram show air-conduction and bone-conduction thresholds for each key frequency. Different audiogram symbols are used to distinguish between air-conduction and bone-conduction measurements for each ear.

Vowels are low frequency sounds with a higher volume than consonants, which are soft, high frequency sounds. Vowels carry the loudness impression of speech and the consonants carry the meaning, (e.g., house versus mouse).