| |
NPS |
|
| Noise |
dB |
Examples |
| Deafening |
120
110
100
90
80
70
60
50
40
30
20
10
0 |
Thunder
Canon trigger
Tyre blowout
Steam whistle
Large industrial unit |
| Strong |
Train in a tunnel
Street with very dense traffic
Very noisy factories
Plane control cabin
Loudspeakers |
| Very strong |
Noisy office
Suburban railway
Typewriter
Full volume radio
Average workshop |
| Moderate |
Large shop
Average office
Silent automobile
Quiet office
Average dwelling |
| Smooth |
Public library
Country road
Quiet conversation
Rustle of paper
Human whistle |
| Very gentle |
Quiet church
Silent night in the country
Soundproof room
Sensitive hearing limit |
