Acoustics of naturally ventilated double transparent facades

This publication presents results of research on naturally ventilated Double Transparent Facades (DTF).
The influence of the structural design of DTFs on the airborne sound insulation was investigated. For this
purpose, 9 DTFs were measured in situ and 9 Double Transparent Façade Elements (DTF) were measured
in a laboratory setting. The influence of the cavity thickness, the parallelism of the constitution layers, the
amount of absorbing surfaces in the cavity, and the presence ventilation slots were investigated. Based on
the performed measurements, a prediction model that allows a fast engineering calculation of the sound
insulation of DTF’s was developed.