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Guys there are a lot of good discussions here...thank you very for your replies. Please keep posting info here. I am very grateful.

I forgot to say i would like to calculate the sound power level from sound pressure level from measure in the study area.

I would like to calculate the sound power (Lw) from a night club in octave bands. It is necessary for me because i use ISO 9613-2 as the mathematical basis of an app i developed in a Geographic Information System (GIS) for the generation of noise maps. One of the input data in the app is the...

I mean in terms of methodology...

Hi, does anyone know how could i calculate the sound power from a night club? The problem is that the type of noise vary in time.