Your AudigyCertified™ professional will use an audiogram to chart the results of your audiometric pure tone evaluation. An audiogram illustrates a person’s hearing loss, frequency by frequency. The sample audiogram on this page has been filled in with illustrations to show where common sounds and part of speech fit in. Frequency, or tone pitch is measured on the x-axis (horizontal axis) and sound intensity, or loudness is measured on the y-axis (vertical axis) in decibels (dB). The purple shaded area on the audiogram shows the pitch and loudness where most common speech sounds occur. An “s” sound is high in pitch, yet quiet, whereas the “u” sound is lower in pitch but louder.