Deaf Children Australia provides information sheets for deaf and hard of hearing children and young people and their families on a range of subjects. Information Sheets are copied onto pages in plain text so they are able be translated in your web browser. To translate a page, please use the yellow Translate tab at the bottom right of the screen. To download an information sheet in PDF format, click the PDF button and save the file.

Terminology around hearing loss

When you are discussing hearing loss you may hear some of the following words used:

  • High-frequency versus low-frequency: The person can either hear high-pitched or low-pitched sounds better.
  • Bilateral versus unilateral. Bilateral means hearing loss or hearing aids in both ears. Unilateral means hearing loss or hearing aid in one ear.
  • Symmetrical versus asymmetrical. Symmetrical means that both ears have the same severity and the audiograms have the same shape of hearing loss. Asymmetrical means each ear has a different severity and audiogram shape.
  • Progressive versus sudden hearing loss. Progressive hearing loss becomes worse over time. Sudden hearing loss happens quickly. You should see your doctor right away if you have a sudden hearing loss.
  • Fluctuating versus stable hearing loss. Fluctuating hearing loss varies over time and can go up or down. Stable hearing loss does not vary and the audiogram shae is consistent.
  • Behind the ear/ in the ear hearing aids. Behind the ear hearing aids is where you have a mould in your ear and the hearing aid sits behind the ear. In the ear hearing aids sit in the ear.
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