Defects of hearing (AQA A-Level Physics): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
ShowHide
Practise the cards
10 cards from this deck
Hearing loss definition
Hearing loss definition
Reduced ear sensitivity requiring higher intensity sounds for same loudness
Two main causes of hearing loss
Two main causes of hearing loss
Age-related deterioration and injury from loud noise exposure
Frequencies most affected by age-related hearing loss
Frequencies most affected by age-related hearing loss
Higher frequencies
Most damaging noise exposure frequency
Most damaging noise exposure frequency
Around kHz
Purpose of equal loudness curves in hearing diagnosis
Purpose of equal loudness curves in hearing diagnosis
Detect type and extent of hearing loss
Age-related hearing loss on equal loudness curves
Age-related hearing loss on equal loudness curves
Curve shifted higher on dB axis, especially at high frequencies
Injury-induced hearing loss on equal loudness curves
Injury-induced hearing loss on equal loudness curves
Distinctive peak at specific damaged frequencies
Effect of long-term exposure to specific frequencies
Effect of long-term exposure to specific frequencies
Damage mainly at that frequency
Age-related loss curve characteristic
Age-related loss curve characteristic
Steady increase in threshold, especially at higher frequencies
Injury-related loss curve characteristic
Injury-related loss curve characteristic
Pronounced peak at most damaged frequencies