|
140dB
|
 |
Short gun blast
|
Above 130dB may cause pain.
|
|
130dB
|
|
Jet taking off
|
Above 115dB damage is instant. |
|
|
|
|
110dB
|
|
Rock group, Trail bike
|
Brief exposure over 80 decibels can cause temporary hearing loss which becomes permanent with continued exposure. |
|
100dB
|
|
Pneumatic drill
|
|
95dB
|
|
Lawn mower
|
|
90dB
|
|
Heavy truck
|
|
|
|
|
80dB
|
|
Busy street
|
Below 80dB an eight-hour day can be worked without using ear protection.
|
|
70dB
|
|
Noisy office
|
|
60dB
|
|
Normal speech
|
|
40dB
|
|
Quiet office/home at night
|
|
30dB
|
|
Soft whisper
|
|
15dB
|
|
Average threshold of hearing
|
|
0dB
|
|
Acute threshold of hearing
|
