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slp1514: applied audiology > lec 17 > Flashcards

lec 17 Flashcards

1
Q

what is the primary goal of amplification? what are other goals (2)?

A
  • primary: to make speech audible
  • other: enhance listening pleasure, promote environmental awareness
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2
Q

wdym that audibility does not necessarily mean that the information heard can be used?

A

that hearing information does not equal understanding the information

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3
Q

what is a phonetic representation audiogram? (3)

A
  • emphasizes areas most important for understanding of speech
  • breaks speech signal into 100 dots and plots threshold
  • dots below line are audible – count them to get a % value of what person can hear
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4
Q

T or F: hearing aids restore hearing loss

A

false!!!

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5
Q

T or F: aided hearing in the typical range means hearing normally

A

false!!!

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6
Q

T or F: hearing aids do not perform well in noisy environments

A

true

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7
Q

what are the 4 main parts of a hearing aid + what does each do?

A
  1. microphone: changes acoustic energy into electrical energy
  2. amplifier: increases amplitude of electrical signal
  3. receiver: changes electrical energy back into acoustic energy
  4. power source
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8
Q

diff bw regular/omni microphones vs directional microphones?

A
  • regular/omni: picks up sound from all directions
  • directional: sound from front is enhanced / from back is reduced
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9
Q

which microphone is more ideal, regular/omni or directional?

A

ideal would be to be able to switch between the two depending on the context

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10
Q

diff bw linear vs nonlinear amplifier?

A
  • linear: fixed gain is applied to input signal
  • nonlinear: gain varies with input signal
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11
Q

which amplifier is more ideal, linear or nonlinear?

A

nonlinear

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12
Q

T or F: hearing aid receivers are digital devices

A

false – analogue

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13
Q

approx how long does a hearing aid battery last?

A

3 days

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14
Q

which is more ideal, rechargeable or disposable hearing aid batteries?

A

depends on person’s lifestyle

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15
Q

what are some pros of using two hearing aids instead of one? (4)

A
  1. Sound localization.
  2. Binaural summation.
  3. Easier to understand speech in noise.
  4. Risk of auditory deprivation is reduced.
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16
Q

why might a person require less amplification if they wear 2 hearing aids as opposed to one?

A

binaural summation

17
Q

what are some styles of hearing aids? (5)

A
  1. behind the ear (BTE)
  2. in the ear (ITE)
  3. in the canal (ITC)
  4. completely in canal (CIC)
18
Q

most hearing aids are air conduction. why might someone need a bone conduction hearing aid?

A
  • for people who cannot wear conventional hearing aid (e.g., microtia, atresia).
  • note: requires near-normal bone scores.
19
Q

what is BAHA? (3)

A
  • bone anchored hearing aid.
  • titanium bone implant + external sound processor.
  • sends sound vibration directly to the cochlea through the skull.
20
Q

what kind of hearing loss do the majority of people who wear hearing aids have?

A

sensorineural hearing loss

21
Q

T or F: Losses from mild to severe (conductive, sensorineural or mixed) can do well with conventional hearing aids.

A

true

22
Q

what are some uses of bluetooth for hearing aids? (3)

A
  1. hearing aid programming
  2. connecting hearing aid to any compatible device (e.g., phone)
  3. user adjustment
23
Q

list the steps of the hearing aid delivery system (7)

A
  1. hearing assessment
  2. physician consult
  3. hearing aid evaluation
  4. fitting + programming of hearing aid
  5. orientation + outcome measures
  6. sound awareness program
  7. follow-up during trial period and after
24
Q

T or F: you can check exactly what a person with a hearing aid hears

A

false – you’re hearing it thru a typical auditory system. you can check what the hearing aid picks up.

25
Q

T or F: An entry-level hearing aid that is well-programed can achieve better results than a poorly programed high-end product.

A

true

26
Q

hearing aid info is in dB ___ while audiograms are in dB ___.

A

SPL
HL

27
Q

what are self-fitting hearing aids? (4)

A
  • permit user to perform own threshold testing
  • hearing aid sets itself
  • allows for fine-tuning without audiology equipment
  • requires computer/tablet/smartphone
28
Q

pros of SFHA’s?

A
  • affordable
  • accessible
  • autonomy
29
Q

what kind of hearing loss may SFHA’s work best for?

A

symmetrical sensorineural hearing loss

30
Q

do SFHA’s pick up air-bone gaps? do they mask?

A

no & no

slp1514: applied audiology (13 decks)

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