Sound energy density level


Sound energy density level

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::L(E)=10, log_{10}left(frac{E_1}{E_0} ight){ m dB}

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 ofDIN 1320: Acoustics, Version 1997-06, Beuth publishing]

:E_0 = 10^{-12} mathrm{frac{J}{m^3

References


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