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Sound Level Chart

Sound powers for the following equation in dBA units are referenced to a picowatt (10-12 W).

Sound Power Formula - RF Cafe


Where: W1, W2 = sound power in similar units of watts

The threshold of pain for the human ear is usually taken to be around 120 dBA.




The following table presents examples of some common noise sources.

Location Min Max
(dBA)
Inside Home 25 45
Inside Office 35 50
Inside Airplane Cabin 75 85
Inside Factory 65 100
Talking @ 3 ft 55 65
Shouting @ 3 ft 75 85
Clothes Dryer @ 3 ft 55 65
Vacuum @ 3 ft 65 80
Chain Saw @ 3 ft 100 120
Clothes Washer @ 3 ft 55 75
Car @ 25 ft @ 65 mph 70 80
Airplane @ 1000 ft 95 110
Traffic @ 300 ft 40 60
Rural Ambient 25 35

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