NBC-HIS - National Board For Certification In Hearing Instrument Sciences
NBC-HIS - National Board for Certification in Hearing Instrument Sciences
Exam (elaborations)
HIS (Certification In Hearing Instrument Sciences) Exam Questions and 100% CORRECT ANSWERS (GUARANTEED SUCCESS)
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NBC-HIS - National Board for Certification in Hearing Instrument Sciences
Institution
NBC-HIS - National Board For Certification In Hearing Instrument Sciences
HIS (Certification In Hearing Instrument Sciences) Exam Questions and 100% CORRECT ANSWERS (GUARANTEED SUCCESS)
In general, mold modifications are as follows: - ANSWER Venting affects lows, damping the midrange and horn effects boost highs.
Basic verification involves: - ANSWER ch...
HIS (Certification In Hearing
Instrument Sciences) Exam
Questions and 100%
A
CORRECT ANSWERS
VI
(GUARANTEED SUCCESS)
TU
IS
M
In general, mold modifications are as follows: - ANSWER Venting affects lows,
O
damping the midrange and horn effects boost highs.
A
Basic verification involves: - ANSWER checking MCL and UCL in quiet and noise.
Sound field is - ANSWER a controlled environment
N
The configuration and height of the tympanogram can be a factor in deciding the proper
JP
matrix for the fitting of a hearing aid: - ANSWER A high Type A tells us to decrease
the output by 2-3 dB
You cannot use feedback checks when - ANSWER checking the telephone coil
Verification procedures: - ANSWER Check the accuracy of your fitting.
The problems produced by excessive ambient noise are - ANSWER greater for the
lower frequencies than the higher frequencies
,The decibel is - ANSWER a ratio between two intensities
REUR measurement are taken in - ANSWER an open human ear canal
When a hearing aid is dead, you can check the receiver and microphone function by: -
ANSWER turning on the instrument telecoil
The dividing line between the external and middle ear is the - ANSWER tympanic
A
membrane
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The cochlea, acting as a frequency analyzer, distributes acoustic stimuli to places along
the basilar membrane according to frequency. This forms the basis of a hypothesis
called the: - ANSWER Place Theory
TU
An organic disorder is when there is damage to: - ANSWER The hearing
mechanism, the neural pathways and the brain.
IS
The speed of sound in air, in feet per second, is : - ANSWER 1100
Properly selected hearing instruments should allow: - ANSWER The patient to wear
an instrument at a comfortable loudness level, improved communication and have
M
better hearing aided.
O
Crystal microphones and receivers: - ANSWER are very fragile
Which of the following is not a coupler used for measuring hearing aid performance? -
A
ANSWER Zwisks Ear Simulator
N
Small diameter tubing of SIA hearing aids has the effect of : - ANSWER reducing
the high frequency gain
JP
The function of a microphone is to : - ANSWER convert acoustic energy into
electrical energy
Vent an earmold : - ANSWER is the most common modification made on an
earmold
When a new hearing instrument has feedback at the patients comfortable level, the
problem is usually: - ANSWER too much wax in the ear canal
, With SIE-S hearing aids: - ANSWER The only signal is from the hearing aid and
phrase effects from a vent are not an issue.
The most comfortable level is: - ANSWER About 45 dB HL or 65 dB SPL for normal
ears
Any complex sound can be broken down into individual frequencies by a technique
known as: - ANSWER Fourier Spectral analysis
A
The adult ear canal: - ANSWER rises upward and forward, then descends to the
VI
drum.
An effective verification is: - ANSWER a measure able improvement in
TU
communication
Which of the following is not included in correct test protocols? - ANSWER plugging
the hearing aid vent to control feedback
IS
Most conducive losses: - ANSWER Are medically correctable, display a breakdown
or obstruction in middle ear and display good discrimination
M
The T position on a hearing aid switch can be used to - ANSWER amplify a
telephone conversation, couple hearing aid into a loop inductor, couple directly into the
O
audio of a radio or tv
The following components can change or modify the frequency response of a hearing
A
instrument: - ANSWER a microphone
N
Afferent fibers: - ANSWER transmit from the cochlea to the brain.
JP
User satisfaction must include: - ANSWER patient preferences
The following measurements use SPL as a reference: - ANSWER Probe
microphones, sound field aided thresholds, and ANSI specifications
Speech discrimination tests: - ANSWER approximate a sample of speech sounds in
an ordinary conversation.
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