Sound energy density level

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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 the ratio of two sound energy densities E or w, and w0.

[edit] Definition

The sound energy density level LE is:

L(E)=10\, \log_{10}\left(\frac{E_1}{E_0}\right){\rm dB}

where E1 and E0 are the energy densities. The unit of the sound energy density level is "dB-E".

If E0 is the standard reference sound energy density of

E_0 = 10^{-12} \mathrm{\frac{W \cdot s}{m^3}}

The reference value has its definition with E0 = 10 − 12 Ws/m3 or J/m3 by [1].

We chose instead of "dB" the unit "dB SE" (SE = sound energy density level).

[edit] Quellen

  1. ^ DIN 1320: Acoustics, Version 1997-06, Beuth publishing
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