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Sound Level Chart

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

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
Location	(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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