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Attention
Hearing Damage
Avoid using headphones with the
volume turned up for an extended
period of time. Following are
guidelines by Occupational Safety
and Health Administration and CDC,
NIOSH:
dB SPL
Occupational noise
exposure 1991
85
88
8 hours (90 dB SPL)
91
6 hours (92 dB SPL)
94
4 hours (95 dB SPL)
97
100
103
1.5 hours (102 dB SPL)
106
1 hour (105 dB SPL)
109
30 min (110 dB SPL)
112
115
3 hours
2 hours
15 min
NIOSH and CDC
2002
8 hours
4 hours
2 hours
1 hour
30 min
15 min
7.5 min
< 4 min
< 2 min
~ 1 min
~ 30 sec
5
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