Checking Noise Levels - Radio Shack Sound Level Meter Owner's Manual

33-2050.fm Page 16 Monday, April 17, 2000 2:04 PM

CHECKING NOISE LEVELS

This chart, gathered from Federal, State,
and local agencies, shows standards for
acceptable noise levels.
Sound Level (dB)
(A-weighting, Duration per Day
SLOW response)
90
92
95
97
100
102
105
110
115
Permissible noise exposures. Extracted
from U.S. Department of Labor Noise Regu-
lations.
Noise is inevitable in almost any environ-
ment. Depending on the level and dura-
tion, noise can be a minor irritant, a
definite disturbance, or even a threat to
your hearing.
16
Controls
Maximum
(hours)
8
6
4
3
2
1
/
1
2
1
1
/
2
1
/
or less
2