Which factor is most critical in selecting a hearing aid?
Lifestyle and hearing loss configuration are both crucial to determining the best device.
What is the purpose of a real ear measurement (REM)?
REM ensures the hearing aid is delivering appropriate amplification at the eardrum.
Which style of hearing aid is most discreet?
Completely-in-the-canal (CIC) aids are placed deep in the ear canal and are nearly invisible.
Why are open-fit hearing aids often preferred for high-frequency loss?
Open-fit aids preserve natural low-frequency hearing while amplifying high frequencies.
Which component converts sound into electrical signals?
The microphone of the hearing aid captures and converts sound into an electrical signal.
Which of the following best defines gain in a hearing aid?
Gain is the difference between the input sound and the amplified output sound.
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Why is ear canal resonance important in hearing aid fitting?
Resonance affects natural sound perception and must be considered for proper fitting.
Which fitting formula is widely used for adult patients?
NAL-NL2 is a widely used prescriptive formula for adult hearing aid fittings.
What is feedback in a hearing aid?
Feedback is a whistling sound caused by sound leaking from the ear canal and re-entering the microphone.