|
SOUND
|
NOISE LEVEL (dBA)
|
|
|
Boom Cars
|
140
|
|
|
Jet Engines (Near)
|
140
|
|
|
Shotgun Firing
|
130
|
|
|
JET TAKEOFF (100-200 Fl.)
|
130
|
|
|
Rock Concerts (Varies)
|
110-140
|
Threshold of pain (125 dB)
|
|
Oxygen Torch
|
121
|
|
|
Discotheque/Boom Box
|
120
|
Threshold of sensation (120 dB)
|
|
Thunderclap (Near)
|
120
|
|
|
Stereos (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
|
|
|
Broadcasting Studio
|
30
|
|
|
Rustling Leaves
|
20
|
Just audible
|
|
Normal Breathing
|
10
|
|
|
|
0
|
Threshold of normal hearing (1000-4000 Hz)
|