Audiology praxis UPDATED Exam
Questions and CORRECT Answers
What is the ANSI standard for specification for audiometers? - CORRECT ANSWER -
ANSI S3.6-1996 (revised from 1989 standard).
How are audiometers classified? - CORRECT ANSWER - By Type 1, 2, 3, 4,,5 and HF
and speech A, B, and C. The smaller the number, the more features the audiometer has.
List the 5 types of audiometer classifications - CORRECT ANSWER - 1. Pure tone
audiometer
2. Automatic audiometer
3. Speech audiometer
4. Extended High-frequency audiometer
5. Free field equivalent audiometer
List the 5 types of transducers - CORRECT ANSWER - 1. Supra-Aural earphones
2.Insert earphones
3. Circumaural earphones
4. loudspeakers
5. bone vibrators
What are the most common supra-aural earphones used in audiology clinics? (Make and model) -
CORRECT ANSWER - Telephonics TDH 49 and 50
What are the most common insert earphones used in audiology clinics? - CORRECT
ANSWER - Etymotic Research (ER) 3A and E-A-RTONE 3A
, What are the most common circumaural earphones used in audiology clinics? When are
circumaural earphones used? - CORRECT ANSWER - Sennheiser HDA 200; high
frequency threshold testing above 8000 Hz.
What is the difference between the B-71 and B-72 bone vibrator? - CORRECT
ANSWER - B-71 is smaller (20g) then the B-72 (48g) and is more commonly used in
clinics.
What coupler is used to calibrate supra-aural earphones? - CORRECT ANSWER - NBS 9-
A or IEC 318 coupler
What coupler is used to calibrate insert earphones - CORRECT ANSWER - HA-1, HA-2,
of occluded ear simulator couplers
Describe the transducer function of earphones, bone vibrators, and loudspeakers. - CORRECT
ANSWER - Inserts, supra-aural, circumaural earphones and loudspeakers convert
electrical output from the audiometer into acoustic energy. The bone vibrator converts electrical
output into mechanical energy.
What is the purpose of a 1/3 octave band filter on a SLM? - CORRECT ANSWER - This
specific filter is used to measure only the sounds contained within a narrow frequency range and
excludes sounds whose frequency is outside of the filter bandwidth.
What is the purpose of a voltmeter? - CORRECT ANSWER - measures the output of an
electronic device.
What does an oscilloscope measure? - CORRECT ANSWER - Used for measuring the
tone-switching performance characteristics such a rise/fall time, overshoot, and pulse durations.
What is RETSPL and what does it measure? - CORRECT ANSWER - reference
equivalent threshold sound pressure level; the reference standard measurement of air conduction
transducers.
Questions and CORRECT Answers
What is the ANSI standard for specification for audiometers? - CORRECT ANSWER -
ANSI S3.6-1996 (revised from 1989 standard).
How are audiometers classified? - CORRECT ANSWER - By Type 1, 2, 3, 4,,5 and HF
and speech A, B, and C. The smaller the number, the more features the audiometer has.
List the 5 types of audiometer classifications - CORRECT ANSWER - 1. Pure tone
audiometer
2. Automatic audiometer
3. Speech audiometer
4. Extended High-frequency audiometer
5. Free field equivalent audiometer
List the 5 types of transducers - CORRECT ANSWER - 1. Supra-Aural earphones
2.Insert earphones
3. Circumaural earphones
4. loudspeakers
5. bone vibrators
What are the most common supra-aural earphones used in audiology clinics? (Make and model) -
CORRECT ANSWER - Telephonics TDH 49 and 50
What are the most common insert earphones used in audiology clinics? - CORRECT
ANSWER - Etymotic Research (ER) 3A and E-A-RTONE 3A
, What are the most common circumaural earphones used in audiology clinics? When are
circumaural earphones used? - CORRECT ANSWER - Sennheiser HDA 200; high
frequency threshold testing above 8000 Hz.
What is the difference between the B-71 and B-72 bone vibrator? - CORRECT
ANSWER - B-71 is smaller (20g) then the B-72 (48g) and is more commonly used in
clinics.
What coupler is used to calibrate supra-aural earphones? - CORRECT ANSWER - NBS 9-
A or IEC 318 coupler
What coupler is used to calibrate insert earphones - CORRECT ANSWER - HA-1, HA-2,
of occluded ear simulator couplers
Describe the transducer function of earphones, bone vibrators, and loudspeakers. - CORRECT
ANSWER - Inserts, supra-aural, circumaural earphones and loudspeakers convert
electrical output from the audiometer into acoustic energy. The bone vibrator converts electrical
output into mechanical energy.
What is the purpose of a 1/3 octave band filter on a SLM? - CORRECT ANSWER - This
specific filter is used to measure only the sounds contained within a narrow frequency range and
excludes sounds whose frequency is outside of the filter bandwidth.
What is the purpose of a voltmeter? - CORRECT ANSWER - measures the output of an
electronic device.
What does an oscilloscope measure? - CORRECT ANSWER - Used for measuring the
tone-switching performance characteristics such a rise/fall time, overshoot, and pulse durations.
What is RETSPL and what does it measure? - CORRECT ANSWER - reference
equivalent threshold sound pressure level; the reference standard measurement of air conduction
transducers.
