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