SPL

Decibel Sound Pressure Level Examples

Jet taking off, 25 meters 140 dB
Artillery (threshold of pain) 130 dB
Very loud rock and roll music (peak) 120 dB
Loud car horn, nearby 115 dB
N.Y. subway 100 dB
Heavy truck 90 dB
Inside motor bus 85 dB
Noisy traffic 80 dB
Soft classical music 65 dB
Conversational speech 60 dB
Very soft music 50 dB
Background noise, suburb library 35 dB
Background, country night whisper, leaves rustling 20 dB