IHS TEST EVALUATION ANSWERS AND QUESTIONS
SET A+
✔✔What does the term"67 dB" mean? - ✔✔It is meaningless there is no reference level.
✔✔The decibel is: - ✔✔a ratio between two intensities.
✔✔The weakest sound normal human ears can hear in the most sensitive frequency
range of the ear is an effective sound pressure of about: - ✔✔0.0002 dynes/cm2
✔✔A formant is: - ✔✔A frequency region within a complex tone where certain
harmonics have a relatively large energy,
✔✔The normal human ear canal resonance is in the approximate range of : - ✔✔2500 -
4000 Hz (avg 2700 Hz)
✔✔The harmonics of speech reinforce some frequencies more than others. The
reinforced frequencies are: - ✔✔Formants
✔✔Vowels differ from consonants in that they: - ✔✔use more open vocal cord voicing
✔✔When tilting the frequency response, the last number in a matrix, i.e. 110/37/15,
means: - ✔✔the 15 dB difference occurs between 500 Hz and the first peak.
✔✔The patent's MCL on speech circuit of the audiometer is usually judged on: - ✔✔`the
volume at 1000 Hz.
✔✔ANSI developed the Articulation Index (AI) to express - ✔✔Speech clarity.
✔✔Positive reinforcement involves: - ✔✔presenting a tone that is only inaudible without
the instruments on.
, ✔✔Our quest of improving speech understanding begins by studying: - ✔✔Speech
production.
✔✔Most auditory systems follow a power law. This logarithmic concept is: - ✔✔a 10 dB
increase in sound pressure doubles the loudness.
✔✔Sones compare: - ✔✔Loudness up frequency
✔✔Mels measure: - ✔✔Pitch
✔✔Dexterity of the patent's fingers enter into the choice of instruments because of
difficulty in: - ✔✔-inserting the earmold into the ear
-replacing the battery
-adjusting the volume or any of the controls on the hearing aid.
✔✔A bone conduction instrument should be used when: - ✔✔The patient has chronic
otitis media.
✔✔A basic problem for clients with asymmetrical hearing loss is: - ✔✔-Discriminating
speech from one side of the head with ---no usable hearing.
-an inability to locate sound.
-hearing in the presence of noise.
✔✔Pressure Measuring Instruments (PMI's ) are: - ✔✔built to the sound pressure
standard of 20 micropascals
✔✔Properly selected hearing instruments should allow: - ✔✔-The patient to wear and
instrument at a comfortable loudness level.
-improved communication ability of normal conversational speech in noise.
-Better hearing aided than unaided.
✔✔Slope of loss can determine a successful fitting, A most favorable slope is: - ✔✔Flat
or gradually falling.
✔✔Calculations of amplified sound to patients MCL do not include: - ✔✔Reserve gain.
✔✔Calculating prescription formulas are compared to to: - ✔✔Specification sheets.
✔✔Some patents with binaural amplification can experience: - ✔✔Degradation effect.
✔✔The following fitting requires amplification to two ears: - ✔✔Binaural
✔✔The Zeta noise blocker was: - ✔✔an example of a hybrid analog-digital hearing
instrument.
SET A+
✔✔What does the term"67 dB" mean? - ✔✔It is meaningless there is no reference level.
✔✔The decibel is: - ✔✔a ratio between two intensities.
✔✔The weakest sound normal human ears can hear in the most sensitive frequency
range of the ear is an effective sound pressure of about: - ✔✔0.0002 dynes/cm2
✔✔A formant is: - ✔✔A frequency region within a complex tone where certain
harmonics have a relatively large energy,
✔✔The normal human ear canal resonance is in the approximate range of : - ✔✔2500 -
4000 Hz (avg 2700 Hz)
✔✔The harmonics of speech reinforce some frequencies more than others. The
reinforced frequencies are: - ✔✔Formants
✔✔Vowels differ from consonants in that they: - ✔✔use more open vocal cord voicing
✔✔When tilting the frequency response, the last number in a matrix, i.e. 110/37/15,
means: - ✔✔the 15 dB difference occurs between 500 Hz and the first peak.
✔✔The patent's MCL on speech circuit of the audiometer is usually judged on: - ✔✔`the
volume at 1000 Hz.
✔✔ANSI developed the Articulation Index (AI) to express - ✔✔Speech clarity.
✔✔Positive reinforcement involves: - ✔✔presenting a tone that is only inaudible without
the instruments on.
, ✔✔Our quest of improving speech understanding begins by studying: - ✔✔Speech
production.
✔✔Most auditory systems follow a power law. This logarithmic concept is: - ✔✔a 10 dB
increase in sound pressure doubles the loudness.
✔✔Sones compare: - ✔✔Loudness up frequency
✔✔Mels measure: - ✔✔Pitch
✔✔Dexterity of the patent's fingers enter into the choice of instruments because of
difficulty in: - ✔✔-inserting the earmold into the ear
-replacing the battery
-adjusting the volume or any of the controls on the hearing aid.
✔✔A bone conduction instrument should be used when: - ✔✔The patient has chronic
otitis media.
✔✔A basic problem for clients with asymmetrical hearing loss is: - ✔✔-Discriminating
speech from one side of the head with ---no usable hearing.
-an inability to locate sound.
-hearing in the presence of noise.
✔✔Pressure Measuring Instruments (PMI's ) are: - ✔✔built to the sound pressure
standard of 20 micropascals
✔✔Properly selected hearing instruments should allow: - ✔✔-The patient to wear and
instrument at a comfortable loudness level.
-improved communication ability of normal conversational speech in noise.
-Better hearing aided than unaided.
✔✔Slope of loss can determine a successful fitting, A most favorable slope is: - ✔✔Flat
or gradually falling.
✔✔Calculations of amplified sound to patients MCL do not include: - ✔✔Reserve gain.
✔✔Calculating prescription formulas are compared to to: - ✔✔Specification sheets.
✔✔Some patents with binaural amplification can experience: - ✔✔Degradation effect.
✔✔The following fitting requires amplification to two ears: - ✔✔Binaural
✔✔The Zeta noise blocker was: - ✔✔an example of a hybrid analog-digital hearing
instrument.
