Direct energy options
Pushing the Options… button opens up the direct energy options dialog box, where it is specified how to calculate the reference level.
The main options are shown and explained below. The last two options will be explained further in the following subsections. It should be noted that the standard requires a fairly elaborate calibration measurement of the sound source to provide the reference energy at 10m. Only option 3 gives the possibility of obtaining G-values according to the ISO 3382 recommendations.
