Hearing Defects

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Hearing Defects

Hearing deteriorates with age both in the response to sound levels and to frequency.

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Deterioration of hearing

  • This chart shows the approximate variation of equal loudness curves with age.
  • A similar effect will be produced by long term exposure to high sound levels.
    • Frequencies around 4000 Hz are usually the worst affected.
Illustrative background for High frequency deteriorationIllustrative background for High frequency deterioration ?? "content

High frequency deterioration

  • Similarly, older listeners will tend to lose response at higher frequencies, in a manner as shown in this chart.

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