Decibel
Level Example
30 Quiet library,soft whispers
40 Living room, refrigerator, bedroom awayfrom traffic
50 Light traffic, normal conversation, quiet office
60 Air conditioner at 20 feet, sewing machine
70 Vacuumcleaner, hair dryer, noisy restaurant
80 Average city traffic, garbage disposals, alarm clock at two feet
THE FOLLOWINGNOISES CAN BE DANGEROUS UNDERCONSTANT EXPOSURE:
90 Subway, motorcycle, truck traffic, lawn mower
100 Garbagetruck, chain saw, pneumatic drill
120 Rockband concert in front of speakers, thunderclap
140 Gunshotblast, jet engine
180 Rocketlaunching pad
Information courtesy of the Deafness Research Foundation.
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