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Aural Rehab Final > Hearing Aids > Flashcards

Hearing Aids Flashcards

0
Q

Goals of amplification

A

Increase strength of auditory signal to make audible
Provide clean, clear signal
Shape signal in order to meet individuals needs
Protect ear from uncomfortable loudness
Meet expectations of the wearer

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1
Q

Rationale for use of amplification

A

Hearing lose = issue of reduced auditory information

  • restore depleted auditory info
  • amplify sounds that enables person to use remaining hearing
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2
Q

People with SNHL have problems tolerating…

A

Loud sounds

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3
Q

Hearing loss varies as a function of

A

Frequency

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4
Q

Two people with same audiogram may have different needs because…

A

Due to different types of cochlea dysfunction

Due to different central system capabilities

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5
Q

Role of audiologist with hearing aids

A

Appropriate amplification
Evaluation of function
Monitor technical performance
Counseling

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6
Q

Basic parts of a hearing aid

A

Power supply
Microphone
Amplifiers
Receivers

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7
Q

Microphone

A

Converts acoustic signal to electrical signal

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8
Q

Amplifiers

A

Increases the amplitude of weak voltages

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9
Q

Receiver

A

Converts amplified signal back into acoustical energy

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10
Q

5 types of hearing aids

A 
Body worn and eyeglass hearing aids
Behind the ear (post auricular)
In the ear (custom fit)
Canal hearing aids
Completely in canal hearing aids
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11
Q

Body worn/eyeglass hearing aids

A

Not seen often anymore
Can sometimes be used w infants
Very powerful

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12
Q

Behind the ear

A

(Post auricular)
Style worn most frequently by children
Adults only choose this 1/3 of the time
Significant amount of amplification for people with severe to profound loss

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13
Q

In the ear custom fit

A

Custom shell made from ear impression
Choice of 75% adults
School aged children w mild/moderate loss
Can make use of piña enhancements

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14
Q

Canal hearing aids/completely in canal hearing aids

A

Very small!
Worn by older adults and teens with mild to moderate loss
Uses natural enhancements of piña and canal

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15
Q

Two types of hearing aids

A

Analog and digital

16
Q

Digital signal processing allows for..

A

Greater flexibility
More control and precision over frequency response
Multiple memory capability
Noise cancellation and directional microphones

17
Q

Binaural hearing aids help with…

A 
Elimination of head shadow
Loudness summation
Localization 
Improved SNR
Improved speech perception
18
Q

How to trouble shoot hearing aids

A

Visual check
Battery check
Listening check
Fit check

19
Q

Analog vs Digital

A

Analog: continuously changing signal by electrical current
Digital: sound wave changed into bits, manipulated, and changed back into analog signal

Aural Rehab Final (7 decks)

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