Combinations of noise exposure levels and maximum duration time:
Noise Exposure Level (dBA) | Duration Time | ||
---|---|---|---|
Hours | Minutes | Seconds | |
80 | 25 | 24 | |
81 | 20 | 10 | |
82 | 16 | ||
83 | 12 | 42 | |
84 | 10 | 5 | |
85 | 8 | ||
86 | 6 | 21 | |
87 | 5 | 2 | |
88 | 4 | ||
89 | 3 | 10 | |
90 | 2 | 31 | |
91 | 2 | ||
92 | 1 | 35 | |
93 | 1 | 16 | |
94 | 1 | ||
95 | 47 | 37 | |
96 | 37 | 48 | |
97 | 30 | ||
98 | 23 | 49 | |
99 | 18 | 59 | |
100 | 15 | ||
101 | 11 | 54 | |
102 | 9 | 27 | |
103 | 7 | 30 | |
104 | 5 | 57 | |
105 | 4 | 43 | |
106 | 3 | 45 | |
107 | 2 | 59 | |
108 | 2 | 22 | |
109 | 1 | 53 | |
110 | 1 | 29 | |
111 | 1 | 11 | |
112 | 56 | ||
113 | 45 | ||
114 | 35 | ||
115 | 28 | ||
116 | 22 | ||
117 | 18 | ||
118 | 14 | ||
119 | 11 | ||
120 | 9 | ||
121 | 7 | ||
122 | 6 | ||
123 | 4 | ||
124 | 3 | ||
125 | 3 | ||
126 | 2 | ||
127 | 1 | ||
128 | 1 | ||
129 | 1 | ||
130 | 1 | ||
-140 | < 1 |
Daily Noise Dose Level - Daily noise dose when exposed in periods with different noise levels
Room acoustics and acoustic properties, decibel A, B and C, Noise Rating (NR) curves, sound transmission, sound pressure, sound intensity and sound attenuation.
Physiological effects from low-frequency noise or vibrations.
Age and life expectancy for men and women.
Acceptable noise - dBA - level at typical common locations.
The noise level should not exceed certain values to protect public health and welfare.
Maximum daily noise dose level when exposed to periods with different levels.
The NIOSH noise Recommended Exposure Limit - REL - for occupational noise
Shift in hearing threshold for men and women vs. age.
Introduction to decibel, sound power, intensity and pressure.
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