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IHS Written QUESTIONS AND ANSWERS GRADED A+
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Exam of 8 pages for the course IHS at IHS (IHS Written)
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IHS WrittenThe hearing aid is full-on, the input is 50 dB or 60 dB, as selected, the curve runs from
200-5000 Hz is the - answer FOG
Reference test gain is - answer the same as full-on in mild gain aids
a more realistic setting than full-on
77 dB less than the HFA SSPL-90
Input is 60 dB; volume control is set in the reference test position. This curve represents
- answer frequency response curve
HFA is determined by averaging the values at: - answer1000, 1600, and 2500 Hz
A BiCROS hearing aid consists of – answer mic on the unaided side and
a mic, amp, rec on the aided side
If a person has a 70 dB SRT with a sensorineural loss, he will require how much FOG in
an ITE aid - answer40-45 dB
If a person has an MCL of 80 dB HL for speech with a sensorineural loss, he will require
how much FOG in an ITE aid - answer40-45 dB
If a person has a LDL of 100 dB HL for speech, the output should be no greater than -
answer120 dB SPL
The selection of the frequency response of the hearing aid is most affected by what
audiometric factor - answerslope of the audiogram
Based on the slope fitting method, in a high frequency hearing loss, where will you
typically have the greater amount of gain - answerabove 1000 HZ
Polyethylene is a - answerear mold for allergies that is semi-rigid white material
resembling paraffin
Requires manufacturer repair - answerchange in the hearing aid Matrix
change in the volume control
electronic feedback
The smaller the inside diameter and longer the tubing will give you - answermore lows
Harmonic distortion can be found by using - answerhearing instrument analyzer
, The average amplitude of the resonant peak in the ear canal is - answer15 to 20 dB
To compute the battery life for a hearing instrument we divide the battery drain by -
answerdaily use of 16 hours
Variable controls such as peak clipping, output compression and input compression can
be classified as - answeroutput limiting controls
What is the variable resistor that controls the amount of current transmitted which, in
effect, controls the output of the hearing aid - answervolume control
Which of the following are types of feedback identified with hearing aids -
answeracoustical
mechanical
electrical
magnetic
With a Y-cord of the parallel variety, how much of a drop in output would you accept -
answer3 to 6 dB
The four things that you will need to have sound is - answermedium
force
vibrator
hearing mechanism
If the hearing instrument operates normally in the telecoil position, but will not operate
other wise the main problem may be - answerthe microphone
The maximum SSPL of the hearing aid can be controlled by - answercompression
peak clipping
agc/avc
The saturation output refers to - answerthe limit beyond which the hearing aid will not
operate properly
If you had to insert tube into the ear canal under the headphones this would be for
which test - answerfor a person with a collapsed canal when doing pure tones
If your patient is using a device on their hearing aid to exclude room conversation, but is
able to hear on the telephone the hearing aid would have an - answerMTO switch
In doing speech testing, if I start 15 to 20 dB over the PTA which test would I most likely
be doing - answerSRT
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