Sound Pressure Levels


Sound Pressure Levels

	The following table gives a comparison of decibel levels to the every day environment.

dB(A)
20-30	Quiet countryside at night
30-40	Quiet office environment
60-65	Conversation, general office noise
75-80	Nearby traffic in town
80-90	Inside a car at high speed
85-95	General industrial workshop
95 Upwards	Beside very noisy machines
110 upwards	Beside unsilenced road drill
130 upwards	Threshold of pain