|
SOUND
|
NOISE
LEVEL (dBA) |
EFFECT
|
|
Jet
Engines (Near)
|
140
|
|
|
Shotgun
Firing
|
130
|
|
|
Jet
Takeoff (100-200 Ft.)
|
130
|
|
|
Rock
Concert (Varies)
|
110-140
|
Threshold
of pain
-
(125
dB)
|
|
Oxygen
Torch
|
121
|
|
|
Discotheque/Boom
Box
|
120
|
Threshold
of sensation (120 dB)
|
|
Thunderclap
(Near)
|
120
|
|
|
Stereo
(Over 100 Watts)
|
110-125
|
|
|
Symphony
Orchestra
|
110
|
Regular
exposure of more than 1 minute risks permanent hearing loss
(over 100 dB)
|
|
Power
Saw (Chain Saw)
|
110
|
|
Jackhammer
|
110
|
|
Snowmobile
|
105
|
|
|
Jet
Fly-over (1000 Ft.)
|
103
|
|
|
Electric
Furnace Area
|
100
|
No
more than 15 minutes of unprotected exposure recommended
(90-100 dB)
|
|
Garbage
Truck/Cement Mixer
|
100
|
|
Farm
Tractor
|
98
|
|
Newspaper
Press
|
97
|
|
|
Subway,
Motorcycle (25 Ft)
|
88
|
|
|
Lawnmower,
Food Blender
|
85-90
|
Level
at which hearing damage (8 hrs.) begins (85dB)
|
|
Recreational
Vehicles, TV
|
70-90
|
|
|
Diesel
Truck (40 Mph, 50 Ft.)
|
84
|
|
|
Average
City Traffic Noise
|
80
|
Annoying;
interferes with conversation; constant exposure may cause
damage
|
|
Garbage
Disposal
|
80
|
|
Washing
Machine
|
78
|
|
|
Dishwasher
|
75
|
|
|
Vacuum
Cleaner
|
70
|
Intrusive;
interferes with telephone conversation
|
|
Hair
Dryer
|
70
|
|
Normal
Conversation
|
50-65
|
|
|
Quiet
Office
|
50-60
|
- Comfortable
- (under
60 dB)
|
|
Refrigerator
Humming
|
40
|
|
|
Whisper
|
30
|
Very
quiet
|
|
Broadcasting
Studio
|
30
|
|
|
Rustling
Leaves
|
20
|
Just
audible
|
|
Normal
Breathing
|
10
|
|
|
|
0
|
Threshold
of normal hearing (1000-4000 Hz)
|
