Better results were got for test specimens WOLG1/2 and WOLG1/4. This is influenced by increase of mass of the first glass (thickness increases from 4 mm to 8 mm) and the effect of mass law (doubling of mass increase sound insulation about 5 dB)
Betterresults were got for test specimens WOLG1/2 and WOLG1/4. Thisis influenced by increase of mass of the first glass (thicknessincreases from 4 mm to 8 mm) and the effect of mass law (doublingof mass increase sound insulation about 5 dB)