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Information: Continued
 
How loud is too loud?
Research has shown that continued exposure to noise above 85 decibel (dB) over time, will cause hearing loss. Not only is the level
of noise a factor, but also the length of time of exposure to the noise.
The following table shows some typical noise levels of noise sources around us. You might be surprised at some of the harmful noise levels!
|
NOISE SOURCE |
dB |
|
|
|
|
Soft Whisper |
30 |
|
Computer |
40 |
|
Refrigerator |
45 |
|
Electric toothbrush |
50 |
|
Microwave Oven |
55 - 59 |
|
Normal conversation |
55 - 65 |
|
Vacuum cleaner |
60 - 85 |
|
Alarm Clock |
65 - 80 |
|
Inside Car, Windows Closed, 50 km/h |
72 - 76 |
|
Hairdryer |
80 - 95 |
|
Handsaw |
85 |
|
Heavy Traffic, Noisy Restaurant |
85 - 90 |
|
Lawn Mower |
88 - 94 |
|
Truck, Shouted conversation |
90 |
|
Tractor, Air Compressor |
90 - 95 |
|
Electric drill |
95 |
|
Motorcycle |
95 - 110 |
|
Woodworking |
100 |
|
Disco, Night Club |
110 |
|
Car Hooter, Baby Crying |
110 |
|
Busy video-games arcade |
110 |
|
Rock concert |
110 120 |
|
Rugby game (stadium) |
117 |
|
Hammer Hitting Nail |
120 |
|
Ambulance Siren |
120 |
|
Percussion Section At Symphony Concert |
130 |
|
Jackhammer |
130 |
|
Jet Airplane Taking Off |
140 |
|
Firecracker |
150 |
|
Balloon Popping |
157 |
|
Rifle shot |
163 |
|
Handgun |
166 |
|
Shotgun |
170 |
|
Rocket Launching At Pad |
180 |
|
Attenuation tests on LC20 Filters according to En24869-1 standards |
|
Frequency /Hz |
Attenuation
/db |
Standard deviation
/db |
Mean Attenuation
/db |
|
125 |
14,5 |
3,5 |
11,0 |
|
250 |
14,7 |
2,4 |
12,3 |
|
500 |
18,6 |
2,7 |
15,9 |
|
1000 |
25,9 |
3,1 |
22,8 |
|
2000 |
32,6 |
4,6 |
26,0 |
|
4000 |
31,0
|
2,8 |
28,2
|
|
8000 |
35,7 |
5,8 |
29,0 |
 Other filters with different attenution is also available.The filters carry the CE mark of approval. |
|
Attenuation tests on LC35 Filters according to En24869-1 standards |
|
Frequency /Hz |
Attenuation /db |
Standard deviation /db |
Mean Attenuation /db |
|
125 |
21,0 |
3,2 |
17,8 |
|
250 |
21,4 |
2,7 |
18,7 |
|
500 |
26,4 |
2,9 |
23,5 |
|
1000 |
28,8 |
4,5 |
24,3 |
|
2000 |
33,5 |
4,8 |
28,7 |
|
4000 |
36,0 |
2,4 |
33,6 |
|
8000 |
37,9 |
5,4 |
32,5 |
|
Other filters with different attenution is also available. The filters carry the CE mark of approval. |
 |
EXAMPLES OF
OCCUPATIONS WITH HIGH NOISE LEVELS |
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