Hearing management

17 December 2008

An audiogram

An audiogram is the result of a hearing test. On a pure-tone audiogram two qualities of a person’s hearing are shown.


An audiogram is the result of a hearing test. On a pure-tone audiogram, two qualities of a person’s hearing are shown, namely:

  • The intensity of a sound – how soft/loud a sound is (measured in decibel).
  • The different sounds from low to high frequencies a person can hear (measured in Herz).

The softest intensity a normal hearing person can hear is approximately 0-14dB. Normal speech at a distance of one metre is approximately 60dB, while a loud sound that causes pain or discomfort is 130-140dB.

Identification without follow-up is worthless. A person's hearing can be determined with a series of tests, and never after a single test.


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Hearing Expert

Heidi Allan is a qualified audiologist and speech-language therapist with 28 years experience both in South Africa and the Netherlands. I am a member of the American Academy of Audiology, the American Speech-Language Hearing Association, the South African Speech-Language Hearing Association and the South African Audiology Association. I have held leadership roles at both provincial and national level in my profession and deliver presentations across the country on aspects of audiology. My areas of particular interest include Central Auditory Processing Disorders (CAPD), hearing aid fitting and rehabilitation, diagnostic audiology and public education.

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