SPL

Decibel Sound Pressure Level Examples

Jet taking off, 25 meters140 dB
Artillery (threshold of pain)130 dB
Very loud rock and roll music (peak)120 dB
Loud car horn, nearby115 dB
N.Y. subway100 dB
Heavy truck90 dB
Inside motor bus85 dB
Noisy traffic80 dB
Soft classical music65 dB
Conversational speech60 dB
Very soft music50 dB
Background noise, suburb library35 dB
Background, country night whisper, leaves rustling20 dB