Sound | Intensity Level (decibels) |
---|---|
Threshold of human hearing | 0 |
Whisper | 15-20 |
Normal conversation | 40-50 |
Street noise | 60-70 |
Inside a bus | 90-100 |
Operating heavy machinery | 80-120 |
Rock concert (in audience) | 110-120 |
Threshold of pain | 120 |
Jet plane (taking off) | 120-160 |