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The sound energy density level gives the ratio of a sound incidence as a sound energy value in comparison to a reference level of 0 dB (DIN 45630). It is a logarithmic measure of the ratio of two sound energy densities. == Definition == The sound energy density level ''L''E is: : where ''E''1 and ''E''0 are the energy densities. The unit of the sound energy density level is the decibel (dB). If ''E''0 is the standard reference sound energy density of〔DIN 1320: Acoustics, Version 1997-06, Beuth publishing〕 : 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Sound energy density level」の詳細全文を読む スポンサード リンク
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