Decibel
Level
30
40
50
60
70
80
Example
Quiet library, soft whispers
Living room, refrigerator, bedroom away from traffic Light traffic, normal conversation, quiet office
Air conditioner at 20 feet, sewing machine
Vacuum cleaner, hair dryer, noisy restaurant
Average city traffic, garbage disposals, alarm clock at two feet
THE FOLLOWING NOISES CAN BE DANGEROUS UNDER CONSTANT EXPOSURE:
90Subway, motorcycle, truck traffic, lawn mower
100 Garbage truck, chain saw, pneumatic drill
120 Rock band concert in front of speakers, thunderclap
140 Gunshot blast, jet engine
180 Rocket launching pad
Information courtesy of the Deafness Research Foundation.
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