Building Radiation

Buildings are not just obstacles to sound propagation, but can also emit noise into the surrounding area. The calculation according to the corresponding standard (e.g. ISO 9613-2) models buildings as a set of connected barriers, open in the top (i.e. "open boxes“). This approach causes the sound power of a source located inside the buildings envelope to be diffracted over the buildings outer walls. This does not model reality so sources in buildings must be treated differently. Therefore, the sound radiation of buildings is modeled by attaching noise emitting sources to the outside of the building’s envelope.

Sound radiating facades at a power plant