In expressing sound intensity, we take \( 10^{-12} \mathrm{Wm}^{-2} \), as the reference level. ... VIDEO
In expressing sound intensity, we take \( 10^{-12} \mathrm{Wm}^{-2} \), as the reference level. For ordinary conversation, the intensity level is about \( 10^{-6} \mathrm{~W} \mathrm{~m}^{-2} \). Expressed in decibel, this is
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