デシベル ←→ 値



(電圧など) X [dB] = 20 LOG( A )

dB → 値

X = [dB] → A = [V]

値 → dB

A = [V] → X = [db]

_


(電力など) X [dB] = 10 LOG( A )

dB → 値

X = [dB] → A = [W]

値 → dB

A = [W] → X = [db]

(参考) 各欄には数値だけでなく、計算式も記入できます。