Sound absorption of the windows.

Sound absorption of the windows may be reached by using the windows of different thickness and filled with the heavy gases, such as sulphur hexafluoride; additionally, special profiles and thermal gaskets are used, e.g. normal window has the sound absorption of 34 dB. The window industry PLAS-BUD use sound absorption 5-chambered profiles as well as thermal 2-chambered gaskets, which results in the sound absorption of 36 dB.