HAC HAC Hearing Aid Anatomy & Components

Question 1

What is the primary function of the microphone in a hearing aid?

Accepted Answer

Convert acoustic sound into an electrical signal

Answer

Amplify the electrical signal

Answer

Convert electrical signals back into sound

Answer

Filter background noise

Question 2

Which component in a hearing aid converts the processed electrical signal back into sound?

Accepted Answer

Receiver (speaker)

Answer

Microphone

Answer

Amplifier

Answer

Battery

Question 3

What type of battery chemistry is most commonly used in modern disposable hearing aid batteries?

Accepted Answer

Zinc-air

Answer

Alkaline (AA)

Answer

NiMH rechargeable

Answer

Carbon-zinc

Question 4

What is the function of a telecoil (T-coil) in a hearing aid?

Accepted Answer

Pick up magnetic signals from induction loop systems and telecoil-compatible phones

Answer

Reduce wind noise automatically

Answer

Enable Bluetooth wireless streaming

Answer

Automatically adjust volume in noise

Question 5

Which component is responsible for providing gain (amplification) in a hearing aid?

Accepted Answer

Amplifier

Answer

Microphone

Answer

Receiver

Answer

Volume control wheel

Question 6

What is the primary acoustic purpose of a vent in a hearing aid earmold or shell?

Accepted Answer

Reduce the occlusion effect by allowing low-frequency sound to pass through

Answer

Allow moisture to evaporate from the canal

Answer

Increase high-frequency gain

Answer

Prevent acoustic feedback at all frequencies