10−12Wm−210^{-12} \mathrm{Wm}^{-2}10−12Wm−2
1Wm−21 \mathrm{Wm}^{-2}1Wm−2
120 dB120 \mathrm{~dB}120 dB
2000 Hz2000 \mathrm{~Hz}2000 Hz