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Rev. Tarihi:25.05.2016 Rev.No:9 Dok. No: KLV.004.ENG
4.5 Sound pressure level
Noise pressure levels (LpA) are determined from the sound power levels (LwA) by using
following formula according to EN 13487 Surrounding Surface Method.
Sp = parallel piped surface at 10 m
Sr = surface reference(1m
2
)
Sound pressure levels given show the average values on a parallelpiped surface at 10 m
distance from the unit in open air over a reflecting plain.
4.6 Sound power level
