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THE FOLLOWING NOISES CAB BE DANGEROUS UNDER CONSTANT
EXPOSURE:
Example
Quiet library, soft whispers
Living room, refrigerators, 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
Subway, motorcycle, truck traffic, lawn mower
Garbage truck, chain saw, pneumatic drill
Rock band concert in front of speakers, thunderclap
Gunshot blast, jet engine
Rocket launching pad
90
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180
Information courtesy of the Deafness Research Foundation.
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