Add multiple sound pressure levels on a logarithmic (energy) basis.
两个声压级不能直接相加,需按能量叠加。
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Energetic summation of levels | L = 10·log10(10^(L1/10) + 10^(L2/10)); intensities add, pressures do not | ISO 80000-8 / standard acoustics practice |