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Aural Rehab > Hearing Aids > Flashcards

Hearing Aids Flashcards

1
Q

Basic components of HA

A
  • Microphone
  • Amplifier
  • Receiver
  • (Battery is also important)
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2
Q

Microphone

A

Picks up acoustic energy and changes it to electrical energy. Can have omni or directional mic.

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3
Q

Directional microphone

A

When you can set the direction of pickup for the HA.

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4
Q

Amplifier

A

Takes electrical signal from mic and boosts it up to give it more amplitude.

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5
Q

Receiver

A

Takes the boosted electrical signal and switches it back to amplified acoustic energy which is then delivered to the persons ear canal.

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6
Q

Acoustic feedback

A

high pitched squealing sound emitted from aid.

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7
Q

Acoustic feedback caused by

A
  • Poorly fitting ear mold
  • Crack in tubing
  • Volume set too high
  • Excessive wax in EAC
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8
Q

Controls/features of Aids

A
  • Program Button (on/off, telecoil, and volume control)
  • Control of frequency specific gain
  • Directional microphone
  • Compression
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Aural Rehab (4 decks)

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