Audiology Praxis UPDATED ACTUAL Questions and CORRECT Answers
1. What is the LTASS? Long-term average speech spectrum.
2. What is the dynamic range 30 dB
of the LTASS in dB?
3. The LTASS is also known as The speech banana. (It is just replotted in dB HL on the audio-
what other well known au- gram.)
diology tool?
4. Reverberation is the time it 60 dB
takes for reflected sounds
to die down by how many
dB from cessation of the
source sound?
5. What signal-to-noise (SNR) +6 SNR
is needed for satisfactory
communication?
6. Potential advantage of bin- Elimination of the head shadow ettect (10 to 15 dB attenuation of
aural hearing aid fitting. sound, mostly high frequency, by the head when sound arrives
from contralateral side.
7. What are some advantages 1) decreases head shadow ettect,
of doing a binaural fitting 2) loudness summation (2 - 8 dB, depends on many factors),
versus a unilateral hearing 3) improved sound localization,
aid fitting? 4) binaural redundancy,
5) binaural squelch
8. What are a few advantages 1) cosmetics,
of CIC hearing aids? 2) preservation of sound localization,
3) reduce wind noise,
, 4) natural pinna ettects,
5) some high frequency benefit >2000 Hz.
9. What are some drawbacks 1) dexterity/vision concerns, 2) size 10 battery (life/size), 3) no
to CIC hearing aids? directional mics, telecoils
10. What hearing aid can be The Lyric IIC is an extended wear aid that must be inserted by a
placed in the ear for ex- professional and can remain in the canal for three to four (3-4)
tended periods and how months.
long is the time it can stay
in the canal?
11. What are potential benefits 1) elimination of head shadow ettect, 2) loud summation, 3) sound
of bilateral hearing aid fit- localization, 4) improved speech in noise perception
tings?
12. How much attenuation oc- 10 - 15 dB attenuation of sound, mainly in high frequencies
curs from the head shadow
effect and in what frequen-
cy range?
13. What dB of benefit comes 2 - 8 dB depending on various factors
from loudness summation?
14. Why is speech in noise per- There is a 2 to 3 dB better SNR with bilateral fitting due to binaural
ception improved with a bi- redundancy and binaural squelch
lateral fitting?
15. What are some potential 1) degree of hearing loss, 2) cost, 3) convenience, 4) binaural
contraindications to binau- interference, 5) perceived benefit
ral fitting of HA's?
16. What are the two prima- 1) acoustic feedback, 2) occlusion ettect
ry concerns/considerations
, when fitting any hearing
aid?
17. When one takes measures Occlusion ettect (sometimes you have to balance b/t feedback &
to decrease feedback, what occlusion ettect)
other problem can then
arise?
18. Describe the occlusion ef- It is an increase in low frequencies (generally <500 Hz.) that
fect. occurs when the ear canal is occluded that causes a "hallow" or
"booming" sound in the ear when the client talks or chews.
19. What are strategies for 1) go to an open style dome, 2) add venting to ear mold (both of
treating the occlusion ef- these strategies allow the escape of low frequency sounds)
fect?
20. When attempting to de- Feedback (with enough amplification open style domes, vents or
crease the occlusion effect slits can allow feedback to occur)
with vents or open style
domes, what other prob-
lem can arise?
21. What is the main amplifica- 4 dB greater output in lows & 8 - 10 dB greater output at 4 KHz.
tion benefit of deep canal
CIC (or IIC)?
22. What are some advantages 1) cosmetic,
of open canal fittings? 2) relief from occlusion ettect,
, 3) comfort,
4) preservation of natural ear canal resonance,
5) sound quality,
6) strong client preference for open-fit mini-BTE style HA's
23. What are some of the fac- 1) hearing loss, 2) cosmetics, 3) ear canal shape/size, 4) presence
tors that affect style selec- of cerumen, 5) dexterity/vision, 6) comfort, 7) communication
tion of HA's? needs, 8)environment used in
24. What are the symptoms of 1) episodic rotary vertigo,
Meniere's disease? 2) roaring tinnitus,
3) rising (reverse) SNHL,
4) sometimes aural fullness also. [generally starts unilaterally then
can become bilateral in @ 2 yrs.]
25. What is the popular docu- Increase in endolymph or endolymphatic hydrops.
mented cause of Meniere's
disease?
26. Main electrolytes in en- Mainly composed of high quantities of potassium (K+) and low
dolymph. quantities of sodium (Na+).
27. What is the prevalence of 100-200 per 100,000 (or 0.2%)
Meniere's disease in the
US?
28. What population is general- Generally occurs in adulthood, but numbers increase rapidly
ly affected by Meniere's dis- around 60 yrs. of age.
ease?
1. What is the LTASS? Long-term average speech spectrum.
2. What is the dynamic range 30 dB
of the LTASS in dB?
3. The LTASS is also known as The speech banana. (It is just replotted in dB HL on the audio-
what other well known au- gram.)
diology tool?
4. Reverberation is the time it 60 dB
takes for reflected sounds
to die down by how many
dB from cessation of the
source sound?
5. What signal-to-noise (SNR) +6 SNR
is needed for satisfactory
communication?
6. Potential advantage of bin- Elimination of the head shadow ettect (10 to 15 dB attenuation of
aural hearing aid fitting. sound, mostly high frequency, by the head when sound arrives
from contralateral side.
7. What are some advantages 1) decreases head shadow ettect,
of doing a binaural fitting 2) loudness summation (2 - 8 dB, depends on many factors),
versus a unilateral hearing 3) improved sound localization,
aid fitting? 4) binaural redundancy,
5) binaural squelch
8. What are a few advantages 1) cosmetics,
of CIC hearing aids? 2) preservation of sound localization,
3) reduce wind noise,
, 4) natural pinna ettects,
5) some high frequency benefit >2000 Hz.
9. What are some drawbacks 1) dexterity/vision concerns, 2) size 10 battery (life/size), 3) no
to CIC hearing aids? directional mics, telecoils
10. What hearing aid can be The Lyric IIC is an extended wear aid that must be inserted by a
placed in the ear for ex- professional and can remain in the canal for three to four (3-4)
tended periods and how months.
long is the time it can stay
in the canal?
11. What are potential benefits 1) elimination of head shadow ettect, 2) loud summation, 3) sound
of bilateral hearing aid fit- localization, 4) improved speech in noise perception
tings?
12. How much attenuation oc- 10 - 15 dB attenuation of sound, mainly in high frequencies
curs from the head shadow
effect and in what frequen-
cy range?
13. What dB of benefit comes 2 - 8 dB depending on various factors
from loudness summation?
14. Why is speech in noise per- There is a 2 to 3 dB better SNR with bilateral fitting due to binaural
ception improved with a bi- redundancy and binaural squelch
lateral fitting?
15. What are some potential 1) degree of hearing loss, 2) cost, 3) convenience, 4) binaural
contraindications to binau- interference, 5) perceived benefit
ral fitting of HA's?
16. What are the two prima- 1) acoustic feedback, 2) occlusion ettect
ry concerns/considerations
, when fitting any hearing
aid?
17. When one takes measures Occlusion ettect (sometimes you have to balance b/t feedback &
to decrease feedback, what occlusion ettect)
other problem can then
arise?
18. Describe the occlusion ef- It is an increase in low frequencies (generally <500 Hz.) that
fect. occurs when the ear canal is occluded that causes a "hallow" or
"booming" sound in the ear when the client talks or chews.
19. What are strategies for 1) go to an open style dome, 2) add venting to ear mold (both of
treating the occlusion ef- these strategies allow the escape of low frequency sounds)
fect?
20. When attempting to de- Feedback (with enough amplification open style domes, vents or
crease the occlusion effect slits can allow feedback to occur)
with vents or open style
domes, what other prob-
lem can arise?
21. What is the main amplifica- 4 dB greater output in lows & 8 - 10 dB greater output at 4 KHz.
tion benefit of deep canal
CIC (or IIC)?
22. What are some advantages 1) cosmetic,
of open canal fittings? 2) relief from occlusion ettect,
, 3) comfort,
4) preservation of natural ear canal resonance,
5) sound quality,
6) strong client preference for open-fit mini-BTE style HA's
23. What are some of the fac- 1) hearing loss, 2) cosmetics, 3) ear canal shape/size, 4) presence
tors that affect style selec- of cerumen, 5) dexterity/vision, 6) comfort, 7) communication
tion of HA's? needs, 8)environment used in
24. What are the symptoms of 1) episodic rotary vertigo,
Meniere's disease? 2) roaring tinnitus,
3) rising (reverse) SNHL,
4) sometimes aural fullness also. [generally starts unilaterally then
can become bilateral in @ 2 yrs.]
25. What is the popular docu- Increase in endolymph or endolymphatic hydrops.
mented cause of Meniere's
disease?
26. Main electrolytes in en- Mainly composed of high quantities of potassium (K+) and low
dolymph. quantities of sodium (Na+).
27. What is the prevalence of 100-200 per 100,000 (or 0.2%)
Meniere's disease in the
US?
28. What population is general- Generally occurs in adulthood, but numbers increase rapidly
ly affected by Meniere's dis- around 60 yrs. of age.
ease?
