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Colors of noise – You may have heard of white noise; there are many different “colors” of noise pertaining to the frequencies of sound contained within the noise. This wikipedia page allows you to listen to the different types of noise.

Intensities of Various Sounds

DescriptionIntensity (dB)Intensity (W/m2)
Threshold of human hearing010-12
Rustling leaves1010-11
“Normal” conversation40 – 6010-8 – 10-6
Vacuum cleaner7010-5
Heavy traffic9010-3
Loud rock concert120100
Jet airplane150103
Rocket engine180106