CAOHC test
0 dB HL does not mean what? - ANS-It does not mean that there is no sound at that level
\0-25dB HL represents what? - ANS-Normal hearing range
\90 dB HL represents what? - ANS-Typically the highest output level on a pure tone air
conduction screening audiometer
\A laboratory value assigned to the individual product and not a reflection of what kind of
attenuation the worker will ultimately receive is called? - ANS-NRR
\Acoustic calibrations need to be done? - ANS-Yearly
\Acoustic transformer, impedance matching system, provides pressue equalization, and
protects the inner ear is the function of what part of the ear? - ANS-Middle ear
\An early stage indication of noise induced hearing loss is identified typically at which
frequencies on an audiogram? - ANS-3-6 kHz
\Background noise affect what? - ANS-Low frequencies 500 Hz and below.
\Collects sound waves, localizes sound waves, protects middle ear components and
provides resonate amplication is the function of what part of the ear? - ANS-Outer ear
\Conductive disorders are typical to which site of lesion, in contrast to NIHL? - ANS-Outer
and middle ear
\Confirmation of an STS must take place within? - ANS-21 days
\dB (A) is used for? - ANS-OSHA, MSHA, FRA, DoD compliance in hearing conservation.
\Frequency is subjectively interpreted as? - ANS-Pitch and the number of cycles per second
\Functionaly and biological checks are part of what? - ANS-Daily calibration
\How many workers are exposed to hazardous noise on the job? - ANS-22 million plus
\Low/high intesity (dB) is subjectively interpreted as? - ANS-Low/ High loudness (intensity
corresponds to loudness)
\low/high requency Hz is subjectively interpreted as what? - ANS-Low and high pitch
\Mixed hearing loss is a combination of what? - ANS-Conductive and sensorineural
components
\Peripheral functions are those associated with the? - ANS-Cochlea
\Permissible exposure level is at what dB? - ANS-90 DB
\Provides intensity, frequency and temporal coding that is relayed via the auditory nerve for
further processing is the function of what part of the ear? - ANS-Inner ear
\Serial audiogram configurations typically shows: - ANS-Numerical
\State and local requirements must what? - ANS-Meet or exceed federally mandated HC
requirements. (be equal or more strict)
\The Action level is at what dB? (requires HCO implementation i.e. hearing testin, program
inclusion, hpd) - ANS-85 dB
\The highest amount of noise suuposedly an employee may be exposed to without incurring
the risk of adverse health effects is known as the? - ANS-Time weighted average (TWA)
\What are examples of auditory effects on hearing and damage risks? - ANS-Tinnitus and
hearing loss
\What are indications for manual audiometry? - ANS-Slow/inappropriate responses, no
response, unilateral hearing loss, and functional hearing loss.
\What are non auditory effects on hearing and damage risks? - ANS-Stress, high blood
pressure
0 dB HL does not mean what? - ANS-It does not mean that there is no sound at that level
\0-25dB HL represents what? - ANS-Normal hearing range
\90 dB HL represents what? - ANS-Typically the highest output level on a pure tone air
conduction screening audiometer
\A laboratory value assigned to the individual product and not a reflection of what kind of
attenuation the worker will ultimately receive is called? - ANS-NRR
\Acoustic calibrations need to be done? - ANS-Yearly
\Acoustic transformer, impedance matching system, provides pressue equalization, and
protects the inner ear is the function of what part of the ear? - ANS-Middle ear
\An early stage indication of noise induced hearing loss is identified typically at which
frequencies on an audiogram? - ANS-3-6 kHz
\Background noise affect what? - ANS-Low frequencies 500 Hz and below.
\Collects sound waves, localizes sound waves, protects middle ear components and
provides resonate amplication is the function of what part of the ear? - ANS-Outer ear
\Conductive disorders are typical to which site of lesion, in contrast to NIHL? - ANS-Outer
and middle ear
\Confirmation of an STS must take place within? - ANS-21 days
\dB (A) is used for? - ANS-OSHA, MSHA, FRA, DoD compliance in hearing conservation.
\Frequency is subjectively interpreted as? - ANS-Pitch and the number of cycles per second
\Functionaly and biological checks are part of what? - ANS-Daily calibration
\How many workers are exposed to hazardous noise on the job? - ANS-22 million plus
\Low/high intesity (dB) is subjectively interpreted as? - ANS-Low/ High loudness (intensity
corresponds to loudness)
\low/high requency Hz is subjectively interpreted as what? - ANS-Low and high pitch
\Mixed hearing loss is a combination of what? - ANS-Conductive and sensorineural
components
\Peripheral functions are those associated with the? - ANS-Cochlea
\Permissible exposure level is at what dB? - ANS-90 DB
\Provides intensity, frequency and temporal coding that is relayed via the auditory nerve for
further processing is the function of what part of the ear? - ANS-Inner ear
\Serial audiogram configurations typically shows: - ANS-Numerical
\State and local requirements must what? - ANS-Meet or exceed federally mandated HC
requirements. (be equal or more strict)
\The Action level is at what dB? (requires HCO implementation i.e. hearing testin, program
inclusion, hpd) - ANS-85 dB
\The highest amount of noise suuposedly an employee may be exposed to without incurring
the risk of adverse health effects is known as the? - ANS-Time weighted average (TWA)
\What are examples of auditory effects on hearing and damage risks? - ANS-Tinnitus and
hearing loss
\What are indications for manual audiometry? - ANS-Slow/inappropriate responses, no
response, unilateral hearing loss, and functional hearing loss.
\What are non auditory effects on hearing and damage risks? - ANS-Stress, high blood
pressure
