Part 4.4 Flashcards
The term that is most similar to the natural ear canal resonance is _____?
a) REOG
b) REUG
c) REAG
d) REIG
b) REUG
Input compression is thought to be most appropriate for _____?
a) Mild to moderate sensorineural loss
b) severe to profound sensorineural loss
c) Conductive loss
d) All losses in general
a) Mild to moderate sensorineural loss
Straight memorization. What methods would be best for other losses?
Output compression is thought to be most appropriate for _____?
a) Mild to moderate sensorineural loss
b) severe to profound sensorineural loss
c) Conductive loss
d) All losses in general
b) severe to profound sensorineural loss
Straight memorization.
WDRC is a form of
a) Input compression
b) Output compression
c) Digital Signal Processing
d) AGC-O
a) Input compression
Caused by central presbycusis, a person who has very poor speech discrimination for a small amount of hearing loss is said to have _____?
a) otosclerosis
b) phonemic regression
c) recruitment
d) atresia
b) phonemic regression
While speech discrimination in conductive hearing loss is generally excellent, discrimination in sensorineural loss can best be described as _____?
a) excellent
b) good
c) fair to good
d) poor
c) fair to good
Straight memorization.
The auditory system functions within three elements:
a) loudness, pitch and frequency
b) intensity, frequency and pitch
c) intensity, frequency and time
d) loudness, time and fidelity
c) intensity, frequency and time
Straight memorization, but think about the logic of each of the possible answers.
Joe’s ear has a sharply sloping high frequency hearing loss. What acoustical modifications may prove helpful?
a) large parallel vent
b) use of filters to filter out lows
c) lengthen the tubing
d) make i. d. of tubing smaller
e) use an aid on telecoil switch instead of microphone
a) large parallel vent
You’re trying to get the highs into his ear. The other three don’t work. Think about them.
Which of the following is not a method of output limiting?
a) peak clipping
b) diode clipping
c) electrical oscillation
d) dynamic range compression
c) electrical oscillation
Clipping, clipping and compression. Oscillation has no business being there.
Ohm’s Law is another name for the law of conservation of energy.
True
False
False
Ohm’s Law is the mathematical relationship among electric current, resistance, and voltage.
A formant is
a) a graph showing the amplitude and frequency of a complex sound
b) the fundamental frequency plus all the harmonics
c) the relative strength of all frequencies in a complex sound
d) a synonym for pure tones
e) a frequency region within which certain harmonics have relatively large energy
e) a frequency region within which certain harmonics have relatively large energy
A formant is the peaks. Peaks will have more energy.
One of the things that makes the decibel system useful is that
a) exactly one decibel is the smallest change in loudness that can be detected by the human ear at all frequencies
b) it uses a convenient range of 0 - 134 units to permit us to deal with a range of 1 to 5,000,000 units
c) by a coincidence, 0 dB happens to be the weakest sound that can be heard by the best human ears
d) decibels are precise, unchanging units which means the same thing in all circumstances
e) all of the above
a) exactly one decibel is the smallest change in loudness that can be detected by the human ear at all frequencies
Straight memorization.
The reference level of 0.002 dynes per square centimeters refers to
a) the weakest sound that normal human ears can hear
b) the weakest sound that the best human ear can hear
c) zero decibels on the audiometer
d) all of the above
e) none of the above
b) the weakest sound that the best human ear can hear
Straight memorization.
Alice complains of tolerance problems with her new hearing aid, What acoustical modification can you make that may be helpful
a) plug the vent
b) increase size of the vent
c) use longer tubing
d) use filters in earhook
e) change earmold material
b) increase size of the vent
The key here is figuring out what ‘tolerance’ means. This is a lousy question, and you will receive a few like this.
The requirement of a listening guide generally indicates that there is a problem
a) in that the client should be trained in lip reading before attempting to wear aids
b) in the initial selection and fitting of the instrument
c) in that the client needs a short course (6-8) weeks in auditory retraining
d) all of the above
b) in the initial selection and fitting of the instrument
Find out what a listening guide is.
