DoD Hearing Test
OSHA prescribes a permissible exposure limit (PEL) of _____ dBA TWA and the DoD
prescribes a PEL of____ - correct answer-B. 90/85
What is the term for the actual attenuation an individual receives wearing hearing
protectors? - correct answer-D. Personal Attenuation Rating
Adding a muffler to noisy equipment to reduce noise exposure is an example of a/an
____________ control. - correct answer-engineering
Human speech is generally located within this frequency range: - correct answer-250 - 4000
Hz
When performing a hearing test, the OHC should present the tones for ____ to ____
seconds. - correct answer-1 - 2
Impulse noise is considered hazardous at what levels? - correct answer-a. ≥ 140 dBP
A bio-acoustic simulator (e.g., ME-500, BIO-JOE, BIO-Betty) is used to: - correct
answer-Take the place of a human when performing daily calibration
The area of the ear most affected by noise damage: - correct answer-Inner
Which part of the ear mechanically amplifies sound? - correct answer-middle ear
The term Hertz describes the________ of a sound. - correct answer-frequency
The audiometric configuration most consistent with noise induced hearing loss is: - correct
answer-sloping/notched
The daily calibration check is documented on the DD _____. - correct answer-2217
The main purpose of monitoring audiometry in the Army hearing program is: - correct
answer-to identify threshold shifts due to noise exposure
One significant difference between OSHA and DoD hearing conservation programs is that
the DoD uses a ____ dB SPL time-intensity exchange rate where OSHA prescribes a _____
dB SPL time-intensity exchange rate. - correct answer-
The primary reason for educating workers about hazardous noise and its effects is to: -
correct answer-motivate workers to protect their hearing
The range of human hearing at birth? - correct answer-20 - 20,000 Hz
,An outdoor generator creates a sound level of 94 dBA at a distance of 6 feet. What would
the sound level be at a distance of 12 feet? - correct answer-88
In the DoD, the noise study is documented on the DD ________. - correct answer-2214
In the DoD, periodic audiograms are documented on the ________. - correct answer-2216
To help individuals experiencing tinnitus during hearing testing, the hearing technician should
use a _________ tone. - correct answer-pulsed
When surveying a new area to identify where there are noise issues, industrial hygienists will
typically first use a: - correct answer-
When surveying a new area to identify where there are noise issues, industrial hygienists will
typically first use a: - correct answer-
To familiarize the patient with the test tone, the hearing technician should begin each test at
1000 Hz and an intensity level of ____ dB. - correct answer-30
Lead, mercury, and organic solvents like toluene and styrene are ALL examples of
________. - correct answer-ototoxins
DOEHRS-HC provides technicians with an "Early Warning" of hearing loss when: - correct
answer-The 2K, 3K, 4K average exceeds 10 dB
When DOESHRS-HC records an STS and/or an Early Warning of hearing loss, the hearing
technician should counsel the patient, check hearing protection, and: - correct
answer-schedule a "noise free" follow up exam
,DOD HEARING TECHNICIAN
TR-SERVICE CERTIFICATION COURSE
What does NIHL stand for - correct answer-noise induced hearing loss
What is the #1 occupational health hazard in the military? - correct answer-hearing loss
Unprotected exposure to hazardous noise can cause the following: - correct
answer-temporary hearing loss, permanent hearing loss, and/or tinnitus
How does noise induced illness occur? - correct answer-gradually over time from repeated
exposures
How does noise induced injury occur? - correct answer-occurs from one significant exposure
or event
What are some DoD related occupational noise sources? - correct answer-machinery,
weapons, vehicles, tools, and equipment
What are some civilian related occupational noise sources? - correct answer-agriculture,
mining, railroads, manufacturing
What is the largest civilian population with hazardous noise exposure? - correct
answer-people in manufacturing
What are some non-occupational noise sources? - correct answer-lawn care, power
tools/equipment, firearms, music, and motorcycles
What are auditory effects of noise exposure? - correct answer-loss of hearing sensitivity,
tinnitus, missing parts of conversation, slower, inaccurate auditory localization, increased
errors or safety mishaps
What are non auditory effects of noise exposure? - correct answer-high blood pressure,
increased heart rate, increase stress hormone levels, disrupt healthy sleep patterns,
possible reassignment to different MOS, embarrassment frustration or withdrawal
What are the four P's of NIHL? - correct answer-painless, progressive, permanent, and
preventable
What is the purpose of the Hearing Conservation Program (HCP)? - correct answer-prevent
occupationally related NIHL, maintain combat readiness, maintain fitness for duty, retain job
or work specialty, reduce cost of hearing loss, and promote healthy hearing and quality of life
, What are the major elements of the hearing conservation program (HCP)? - correct
answer-noise hazard assessment, noise controls, audiometric monitoring, hearing protection
devices (HPDs), hearing conservation education, recordkeeping, program evaluation
What makes up the Councils for Accreditation in Occupational Hearing Conservation
(CAOHC)? - correct answer-certification body for Certified Occupational Hearing
Conservationists (COHCs), Course Directors (CDs), and Professional Supervisors (PSs); it
also includes two volunteers representatives each from nine component professional
organizations
What is the CAOHC mission? - correct answer-advancing best practices in occupational
hearing conservation worldwide, through credentialing, standards, education, and advocacy
What is the CAOHC vision? - correct answer-a world without occupational hearing loss
What is the role of an individual who is CAOHC certified Certified Occupational Hearing
Conservationist? - correct answer-ensure uniform standards of practice for an audiometric
monitoring program
What is the role of a Occupational Hearing Conservationist/Hearing Technician? - correct
answer-test all personnel, fit HPDs, educate and MOTIVATE, answer questions, process
referrals to the correct echelon of care
What are the characteristics of sound? - correct answer-frequency, amplitude, and
temporal/time
What is frequency? - correct answer-referred to as pitch described as a high-pitched sound
like a train whistle or a low-pitch sound like the rumble of thunder or engine noise
How is frequency measured? - correct answer-measured in hertz (Hz)
What is a high pitched sounds typically described as? - correct answer-frequencies greater
than 2000 hz
What is a low pitched sound typically described as? - correct answer-usually less than 500
Hz
What is amplitude? - correct answer-referred to as intensity or loudness and is measure in
decibels (dB); the louder the sound the higher the decibel number
What is temporal/time? - correct answer-how the sound changes over a period or time
What are the technical terms for temporal/time? - correct answer-continuous, steady state,
intermittent, varying, impact, and impulse
What is an intermittent sound? - correct answer-loud sounds for a short period of time,
stopping for a period of relative quiet then starting up again; an example would be a
jackhammer
OSHA prescribes a permissible exposure limit (PEL) of _____ dBA TWA and the DoD
prescribes a PEL of____ - correct answer-B. 90/85
What is the term for the actual attenuation an individual receives wearing hearing
protectors? - correct answer-D. Personal Attenuation Rating
Adding a muffler to noisy equipment to reduce noise exposure is an example of a/an
____________ control. - correct answer-engineering
Human speech is generally located within this frequency range: - correct answer-250 - 4000
Hz
When performing a hearing test, the OHC should present the tones for ____ to ____
seconds. - correct answer-1 - 2
Impulse noise is considered hazardous at what levels? - correct answer-a. ≥ 140 dBP
A bio-acoustic simulator (e.g., ME-500, BIO-JOE, BIO-Betty) is used to: - correct
answer-Take the place of a human when performing daily calibration
The area of the ear most affected by noise damage: - correct answer-Inner
Which part of the ear mechanically amplifies sound? - correct answer-middle ear
The term Hertz describes the________ of a sound. - correct answer-frequency
The audiometric configuration most consistent with noise induced hearing loss is: - correct
answer-sloping/notched
The daily calibration check is documented on the DD _____. - correct answer-2217
The main purpose of monitoring audiometry in the Army hearing program is: - correct
answer-to identify threshold shifts due to noise exposure
One significant difference between OSHA and DoD hearing conservation programs is that
the DoD uses a ____ dB SPL time-intensity exchange rate where OSHA prescribes a _____
dB SPL time-intensity exchange rate. - correct answer-
The primary reason for educating workers about hazardous noise and its effects is to: -
correct answer-motivate workers to protect their hearing
The range of human hearing at birth? - correct answer-20 - 20,000 Hz
,An outdoor generator creates a sound level of 94 dBA at a distance of 6 feet. What would
the sound level be at a distance of 12 feet? - correct answer-88
In the DoD, the noise study is documented on the DD ________. - correct answer-2214
In the DoD, periodic audiograms are documented on the ________. - correct answer-2216
To help individuals experiencing tinnitus during hearing testing, the hearing technician should
use a _________ tone. - correct answer-pulsed
When surveying a new area to identify where there are noise issues, industrial hygienists will
typically first use a: - correct answer-
When surveying a new area to identify where there are noise issues, industrial hygienists will
typically first use a: - correct answer-
To familiarize the patient with the test tone, the hearing technician should begin each test at
1000 Hz and an intensity level of ____ dB. - correct answer-30
Lead, mercury, and organic solvents like toluene and styrene are ALL examples of
________. - correct answer-ototoxins
DOEHRS-HC provides technicians with an "Early Warning" of hearing loss when: - correct
answer-The 2K, 3K, 4K average exceeds 10 dB
When DOESHRS-HC records an STS and/or an Early Warning of hearing loss, the hearing
technician should counsel the patient, check hearing protection, and: - correct
answer-schedule a "noise free" follow up exam
,DOD HEARING TECHNICIAN
TR-SERVICE CERTIFICATION COURSE
What does NIHL stand for - correct answer-noise induced hearing loss
What is the #1 occupational health hazard in the military? - correct answer-hearing loss
Unprotected exposure to hazardous noise can cause the following: - correct
answer-temporary hearing loss, permanent hearing loss, and/or tinnitus
How does noise induced illness occur? - correct answer-gradually over time from repeated
exposures
How does noise induced injury occur? - correct answer-occurs from one significant exposure
or event
What are some DoD related occupational noise sources? - correct answer-machinery,
weapons, vehicles, tools, and equipment
What are some civilian related occupational noise sources? - correct answer-agriculture,
mining, railroads, manufacturing
What is the largest civilian population with hazardous noise exposure? - correct
answer-people in manufacturing
What are some non-occupational noise sources? - correct answer-lawn care, power
tools/equipment, firearms, music, and motorcycles
What are auditory effects of noise exposure? - correct answer-loss of hearing sensitivity,
tinnitus, missing parts of conversation, slower, inaccurate auditory localization, increased
errors or safety mishaps
What are non auditory effects of noise exposure? - correct answer-high blood pressure,
increased heart rate, increase stress hormone levels, disrupt healthy sleep patterns,
possible reassignment to different MOS, embarrassment frustration or withdrawal
What are the four P's of NIHL? - correct answer-painless, progressive, permanent, and
preventable
What is the purpose of the Hearing Conservation Program (HCP)? - correct answer-prevent
occupationally related NIHL, maintain combat readiness, maintain fitness for duty, retain job
or work specialty, reduce cost of hearing loss, and promote healthy hearing and quality of life
, What are the major elements of the hearing conservation program (HCP)? - correct
answer-noise hazard assessment, noise controls, audiometric monitoring, hearing protection
devices (HPDs), hearing conservation education, recordkeeping, program evaluation
What makes up the Councils for Accreditation in Occupational Hearing Conservation
(CAOHC)? - correct answer-certification body for Certified Occupational Hearing
Conservationists (COHCs), Course Directors (CDs), and Professional Supervisors (PSs); it
also includes two volunteers representatives each from nine component professional
organizations
What is the CAOHC mission? - correct answer-advancing best practices in occupational
hearing conservation worldwide, through credentialing, standards, education, and advocacy
What is the CAOHC vision? - correct answer-a world without occupational hearing loss
What is the role of an individual who is CAOHC certified Certified Occupational Hearing
Conservationist? - correct answer-ensure uniform standards of practice for an audiometric
monitoring program
What is the role of a Occupational Hearing Conservationist/Hearing Technician? - correct
answer-test all personnel, fit HPDs, educate and MOTIVATE, answer questions, process
referrals to the correct echelon of care
What are the characteristics of sound? - correct answer-frequency, amplitude, and
temporal/time
What is frequency? - correct answer-referred to as pitch described as a high-pitched sound
like a train whistle or a low-pitch sound like the rumble of thunder or engine noise
How is frequency measured? - correct answer-measured in hertz (Hz)
What is a high pitched sounds typically described as? - correct answer-frequencies greater
than 2000 hz
What is a low pitched sound typically described as? - correct answer-usually less than 500
Hz
What is amplitude? - correct answer-referred to as intensity or loudness and is measure in
decibels (dB); the louder the sound the higher the decibel number
What is temporal/time? - correct answer-how the sound changes over a period or time
What are the technical terms for temporal/time? - correct answer-continuous, steady state,
intermittent, varying, impact, and impulse
What is an intermittent sound? - correct answer-loud sounds for a short period of time,
stopping for a period of relative quiet then starting up again; an example would be a
jackhammer
