SoundPLANnoise Frequently Asked Questions
Question number FAQ-1077
How many times can diffraction be performed?
In SoundPLANnoise, if there are three or more diffraction edges caused by obstacles between the noise source and the receiving point, calculations are performed by replacing them with triple or double diffraction. Some calculation methods published in various countries also describe replacing three or more diffractions with double diffraction.
Last updated: 2026-07-15