Basic audiogram reading, hearing aid style identification, and fitting concepts tested on hearing aid specialist licensing exams.
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- What does dB stand for?
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decibel
- What frequency range can normal human hearing perceive?
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20 Hz to 20,000 Hz
- In audiology, what does Hz measure?
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frequency of sound
- What is considered the normal range of hearing thresholds?
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0 to 20 dB HL
- What does the O symbol represent on an audiogram?
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right ear air conduction
- What does the X symbol represent on an audiogram?
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left ear air conduction
- What does the [ symbol represent on an audiogram?
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right ear bone conduction
- Define sensorineural hearing loss.
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damage to the inner ear or auditory nerve
- Define conductive hearing loss.
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obstruction preventing sound from reaching the inner ear
- What is an air-bone gap?
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difference between air conduction and bone conduction thresholds
- What is mixed hearing loss?
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combination of conductive and sensorineural components
- What does BTE stand for?
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behind-the-ear
- What does ITE stand for?
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in-the-ear
- What does ITC stand for?
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in-the-canal
- What does CIC stand for?
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completely-in-canal