8
NOISE REDUCTION RATING (NRR)
The NRR for the AESEB2 ELITE Bluetooth
®
Jobsite Earbuds is 25dB. It
is tested and in accordance with ANSI S3.19-1974. To ensure adequate
hearing protection, the provided memory foam tips must be used with the
Bluetooth
®
Jobsite Earbuds.
ANSI S3.19-1974 TESTING
Frequency
(Hz)
125 250 500 1000 2000 3150 4000 6300 8000 NRR
Mean
Attenuation
30.2 28.6 34.0 36.7 35.7 39.2 38.0 40.6 42.6
25
Standard
Deviation
5.2 4.0 6.0 4.9 3.8 3.0 2.3 2.9 3.0
The level of noise entering a person’s ear when the hearing protector is
worn as directed, is closely approximated by the difference between the
A-Weighted environmental noise level and the Noise Reduction Rating
(NRR).
EXAMPLE:
• The environmental noise level as measured at the ear is 93dB(A).
• The NRR is 25dB.
• The level of noise entering the ear is approximately equal to 68dB(A).
ENGLISH
AESEB2-1390596ART.indd 8AESEB2-1390596ART.indd 8 4/6/2023 12:03:57 PM4/6/2023 12:03:57 PM
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