IHS Exam QUESTIONS VERIFIED
ANSWERS LATEST UPDATE 2025/2026
RATED A+
In general, mold modifications are as follows: - CORRECT ANSWERS Venting affects lows,
damping the midrange and horn effects boost highs.
Basic verification involves: - CORRECT ANSWERS checking MCL and UCL in quiet and noise.
Sound field is - CORRECT ANSWERS a controlled environment
The configuration and height of the tympanogram can be a factor in deciding the proper matrix for the
fitting of a hearing aid: - CORRECT ANSWERS A high Type A tells us to decrease the output by
2-3 dB
You cannot use feedback checks when - CORRECT ANSWERS checking the telephone coil
Verification procedures: - CORRECT ANSWERS Check the accuracy of your fitting.
The problems produced by excessive ambient noise are - CORRECT ANSWERS greater for the
lower frequencies than the higher frequencies
The decibel is - CORRECT ANSWERS a ratio between two intensities
REUR measurement are taken in - CORRECT ANSWERS an open human ear canal
When a hearing aid is dead, you can check the receiver and microphone function by: - CORRECT
ANSWERS turning on the instrument telecoil
The dividing line between the external and middle ear is the - CORRECT ANSWERS tympanic
membrane
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: - CORRECT ANSWERS
Place Theory
An organic disorder is when there is damage to: - CORRECT ANSWERS The hearing mechanism,
the neural pathways and the brain.
The speed of sound in air, in feet per second, is : - CORRECT ANSWERS 1100
Properly selected hearing instruments should allow: - CORRECT ANSWERS The patient to wear
an instrument at a comfortable loudness level, improved communication and have better hearing aided.
Crystal microphones and receivers: - CORRECT ANSWERS are very fragile
,Which of the following is not a coupler used for measuring hearing aid performance? - CORRECT
ANSWERS Zwisks Ear Simulator
Small diameter tubing of SIA hearing aids has the effect of : - CORRECT ANSWERS reducing the
high frequency gain
The function of a microphone is to : - CORRECT ANSWERS convert acoustic energy into
electrical energy
Vent an earmold : - CORRECT ANSWERS 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: -
CORRECT ANSWERS too much wax in the ear canal
With SIE-S hearing aids: - CORRECT ANSWERS The only signal is from the hearing aid and
phrase effects from a vent are not an issue.
The most comfortable level is: - CORRECT ANSWERS 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: -
CORRECT ANSWERS Fourier Spectral analysis
The adult ear canal: - CORRECT ANSWERS rises upward and forward, then descends to the
drum.
An effective verification is: - CORRECT ANSWERS a measure able improvement in
communication
Which of the following is not included in correct test protocols? - CORRECT ANSWERS plugging
the hearing aid vent to control feedback
Most conducive losses: - CORRECT ANSWERS Are medically correctable, display a breakdown
or obstruction in middle ear and display good discrimination
The T position on a hearing aid switch can be used to - CORRECT ANSWERS amplify a
telephone conversation, couple hearing aid into a loop inductor, couple directly into the audio of a radio
or tv
The following components can change or modify the frequency response of a hearing instrument: -
CORRECT ANSWERS a microphone
Afferent fibers: - CORRECT ANSWERS transmit from the cochlea to the brain.
User satisfaction must include: - CORRECT ANSWERS patient preferences
, The following measurements use SPL as a reference: - CORRECT ANSWERS Probe
microphones, sound field aided thresholds, and ANSI specifications
Speech discrimination tests: - CORRECT ANSWERS approximate a sample of speech sounds in
an ordinary conversation.
A formant is: - CORRECT ANSWERS a frequency region within a complex tone where certain
harmonics have relatively large energy.
Malingering is a category of : - CORRECT ANSWERS non organic loss
Bone conduction threshold worse than air conduction thresholds may be caused by : - CORRECT
ANSWERS poor placement of vibrator, skull fracture, thickness of skull
Part of the basic law of electrical energy is : - CORRECT ANSWERS protons attract electrons
Some patients with binaural amplification can experience: - CORRECT ANSWERS degredation
effect
The scala tympani is filled with: - CORRECT ANSWERS perilymph
The following is a transducer: - CORRECT ANSWERS electret microphone
A sensorineural hearing loss is due to a disorder in the: - CORRECT ANSWERS Inner ear
In pure tone testing, threshold means : - CORRECT ANSWERS the lowest intensity the client
hears 50% of the time.
The ear, due to its physical characteristics, enhances which frequencies? - CORRECT ANSWERS
2,000 - 5,000hz
When performing aided sound field testing, what degree of angle (from the patient/client) is the
speaker to be placed? - CORRECT ANSWERS 45
Rather than asking a patient/client, "How does that sound?," which test can a hearing healthcare
professional use to measure the change in a patient's/client's hearing? - CORRECT ANSWERS
APHAB
A hearing healthcare professional completes a fitting of new open-fit technology for a patient/client.
Which outcome measurement tool should the hearing healthcare professional use to determine proper
fit? - CORRECT ANSWERS Real ear measurement
Which validation method can be effectively performed in a sound field environment? - CORRECT
ANSWERS NU 6
Which procedure ensures that the patient's/client's perceived amplification needs have been
addressed? - CORRECT ANSWERS sound field measurement
ANSWERS LATEST UPDATE 2025/2026
RATED A+
In general, mold modifications are as follows: - CORRECT ANSWERS Venting affects lows,
damping the midrange and horn effects boost highs.
Basic verification involves: - CORRECT ANSWERS checking MCL and UCL in quiet and noise.
Sound field is - CORRECT ANSWERS a controlled environment
The configuration and height of the tympanogram can be a factor in deciding the proper matrix for the
fitting of a hearing aid: - CORRECT ANSWERS A high Type A tells us to decrease the output by
2-3 dB
You cannot use feedback checks when - CORRECT ANSWERS checking the telephone coil
Verification procedures: - CORRECT ANSWERS Check the accuracy of your fitting.
The problems produced by excessive ambient noise are - CORRECT ANSWERS greater for the
lower frequencies than the higher frequencies
The decibel is - CORRECT ANSWERS a ratio between two intensities
REUR measurement are taken in - CORRECT ANSWERS an open human ear canal
When a hearing aid is dead, you can check the receiver and microphone function by: - CORRECT
ANSWERS turning on the instrument telecoil
The dividing line between the external and middle ear is the - CORRECT ANSWERS tympanic
membrane
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: - CORRECT ANSWERS
Place Theory
An organic disorder is when there is damage to: - CORRECT ANSWERS The hearing mechanism,
the neural pathways and the brain.
The speed of sound in air, in feet per second, is : - CORRECT ANSWERS 1100
Properly selected hearing instruments should allow: - CORRECT ANSWERS The patient to wear
an instrument at a comfortable loudness level, improved communication and have better hearing aided.
Crystal microphones and receivers: - CORRECT ANSWERS are very fragile
,Which of the following is not a coupler used for measuring hearing aid performance? - CORRECT
ANSWERS Zwisks Ear Simulator
Small diameter tubing of SIA hearing aids has the effect of : - CORRECT ANSWERS reducing the
high frequency gain
The function of a microphone is to : - CORRECT ANSWERS convert acoustic energy into
electrical energy
Vent an earmold : - CORRECT ANSWERS 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: -
CORRECT ANSWERS too much wax in the ear canal
With SIE-S hearing aids: - CORRECT ANSWERS The only signal is from the hearing aid and
phrase effects from a vent are not an issue.
The most comfortable level is: - CORRECT ANSWERS 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: -
CORRECT ANSWERS Fourier Spectral analysis
The adult ear canal: - CORRECT ANSWERS rises upward and forward, then descends to the
drum.
An effective verification is: - CORRECT ANSWERS a measure able improvement in
communication
Which of the following is not included in correct test protocols? - CORRECT ANSWERS plugging
the hearing aid vent to control feedback
Most conducive losses: - CORRECT ANSWERS Are medically correctable, display a breakdown
or obstruction in middle ear and display good discrimination
The T position on a hearing aid switch can be used to - CORRECT ANSWERS amplify a
telephone conversation, couple hearing aid into a loop inductor, couple directly into the audio of a radio
or tv
The following components can change or modify the frequency response of a hearing instrument: -
CORRECT ANSWERS a microphone
Afferent fibers: - CORRECT ANSWERS transmit from the cochlea to the brain.
User satisfaction must include: - CORRECT ANSWERS patient preferences
, The following measurements use SPL as a reference: - CORRECT ANSWERS Probe
microphones, sound field aided thresholds, and ANSI specifications
Speech discrimination tests: - CORRECT ANSWERS approximate a sample of speech sounds in
an ordinary conversation.
A formant is: - CORRECT ANSWERS a frequency region within a complex tone where certain
harmonics have relatively large energy.
Malingering is a category of : - CORRECT ANSWERS non organic loss
Bone conduction threshold worse than air conduction thresholds may be caused by : - CORRECT
ANSWERS poor placement of vibrator, skull fracture, thickness of skull
Part of the basic law of electrical energy is : - CORRECT ANSWERS protons attract electrons
Some patients with binaural amplification can experience: - CORRECT ANSWERS degredation
effect
The scala tympani is filled with: - CORRECT ANSWERS perilymph
The following is a transducer: - CORRECT ANSWERS electret microphone
A sensorineural hearing loss is due to a disorder in the: - CORRECT ANSWERS Inner ear
In pure tone testing, threshold means : - CORRECT ANSWERS the lowest intensity the client
hears 50% of the time.
The ear, due to its physical characteristics, enhances which frequencies? - CORRECT ANSWERS
2,000 - 5,000hz
When performing aided sound field testing, what degree of angle (from the patient/client) is the
speaker to be placed? - CORRECT ANSWERS 45
Rather than asking a patient/client, "How does that sound?," which test can a hearing healthcare
professional use to measure the change in a patient's/client's hearing? - CORRECT ANSWERS
APHAB
A hearing healthcare professional completes a fitting of new open-fit technology for a patient/client.
Which outcome measurement tool should the hearing healthcare professional use to determine proper
fit? - CORRECT ANSWERS Real ear measurement
Which validation method can be effectively performed in a sound field environment? - CORRECT
ANSWERS NU 6
Which procedure ensures that the patient's/client's perceived amplification needs have been
addressed? - CORRECT ANSWERS sound field measurement
