Dynamic range compression is also called:
dynamic unity
total compression knee point
point of SSPL
logarithmic compression - CORRECT
... [Show More] ANSWER-logarithmic compression
A resistor of a hearing aid could be:
the volume control
a pot to adjust the high frequency
tone control
all of the above - CORRECT ANSWER-all of the above
Limiting the output of a hearing aid by using peak clipping would be what type of
amplifier:
Class A
Class C
Class D
all of the above - CORRECT ANSWER-Class A
A hearing aid with a push/pull circuit would have:
nickel cadmium battery
Class B amplifier
low gain and output
lithium chip - CORRECT ANSWER-Class B amplifier
If a hearing aid is classified by polar pattern it is a:
ITE only
directional
hearing aid with a M-T-O switch
uses soft peak clipping - CORRECT ANSWER-directional
With the hearing aid set at the persons MCL you have:
usable gain
greater DR range
functional gain
usable threshold gain - CORRECT ANSWER-functional gain
Prescription formulas are based on which of the following:
Pogo method
Berger method
NAL method
comparative methods - CORRECT ANSWER-comparative methods
Which of the following reasons would you likely fit a bone conduction hearing aid:
cost
bilateral atresia
more gain
bilateral sensorineural hearing loss - CORRECT ANSWER-bilateral atresia
Sound field are free field are used to:
verify the fit of a hearing instrument
give you aided and unaided scores
to do sound tests using speaker and not head sets
all of the above - CORRECT ANSWER-all of the above
When doing sound field and free field the speaker should be:
45 degrees azimuth and 1 meter
0 degrees azimuth and 1 meter
90 degrees azimuth and 2 meters
180 degrees azimuth and 2 meters - CORRECT ANSWER-0 degrees azimuth and 1
meter
Showing the difference between REAR and REUR you would have:
insertion gain
insertion loss only for 3 KHz
insertion response for the 2 cc coupler
insertion flat results - CORRECT ANSWER-insertion gain
If a persons hearing aid showed a Matrix of 107/35/20 it would give their:
MCL
UCL
SPL, gain and tone
SSPL, gain and slope - CORRECT ANSWER-SSPL, gain and slope
Which of the following is a term for closure of the external auditory canal:
otosclerosis
atresia
otitis
stenosis - CORRECT ANSWER-atresia
The decibel expresses:
the threshold of hearing
the ratio between two sound pressures
the pitch of a tone
the loudness of sound - CORRECT ANSWER-the ratio between two sound pressures
Mr. Black comes in to see you and states that he has to turn his hearing aid almost all
the way up to hear and when he does, he gets feed back and the aid sounds funny.
What might be your solution:
open the earmold up more
add a filter
use a milder gain aid
none of the above - CORRECT ANSWER-none of the above
Mrs. Green says that her hearing aid is causing her discomfort. Every time a loud noise
occurs, she feels she experiences physical pain. What might be your solution:
make the canal on the earmold longer
use compression
use a lower voltage battery
use a type A amp - CORRECT ANSWER-use compression
Mr. Smith brings in his hearing aid and it is dead. What would you do:
check the battery voltage
check the battery contacts
check the battery insertion
all of the above - CORRECT ANSWER-all of the above
Mrs. Jones says her aid is squealing. Which of the following is NOT likely the cause:
a split in the earhook
wax plug in the ear
wrong tubing thickness
none of the above - CORRECT ANSWER-none of the above
An ear canal occluded with wax:
may cause feedback during hearing aid usage
may show different test results than if the wax was removed
should be corrected by a physician
all of the above - CORRECT ANSWER-all of the above
Client has normal hearing through 1000 Hz with a moderate sensorineural hearing loss
at the higher frequencies. What would be the likely choice in earmolds:
non occluding (CROS) molds out of lucite
skeleton molds, lucite, SAV
lucite mold, reverse Libby horn
no mold or tubing is needed - CORRECT ANSWER-non occluding (CROS) molds out of
lucite
With open canal earmold fitting:
there is a smaller volume of air existing in the ear canal
there is a minimal chance of feedback
you get high frequency assistance because of low frequency suppression
all of the above - CORRECT ANSWER-you get high frequency assistance because of
low frequency suppression
Tommy complains that his aid sounds tinny. What might be your initial thoughts:
too much high frequency amplification
too much gain
not enough SSPL
all of the above - CORRECT ANSWER-too much high frequency amplification
The microphone:
picks up incoming signals
converts energy from acoustical to electrical
converts energy from electrical to acoustical
A and B - CORRECT ANSWER-A and B
The receiver:
picks up incoming signals
converts energy from acoustical to electrical
converts energy from electrical to acoustical
A and B - CORRECT ANSWER-converts energy from electrical to acoustical
The input signal of a hearing instrument is:
the sound going to the microphone
the sound going into the receiver
the sound going into the ear
none of the above - CORRECT ANSWER-the sound going to the microphone
When fitting binaurally, you can generally expect:
to need 3-5 dB less gain
better localization ability
better aided discrimination
all of the above - CORRECT ANSWER-all of the above
When selecting the desirable SSPL of a hearing instrument, the most important
consideration is the user's:
SRT
slope
UCL
DR - CORRECT ANSWER-UCL
The dynamic range is:
UCL - SRT
UCL - MCL
MCL - SRT
all of the above - CORRECT ANSWER-UCL - SRT
If the average loss is 60 dB, the user will need the hearing aid [Show Less]