OITC twenty five: Nominal sound reduction—very low-frequency looks like visitors and concrete rumble are Obviously audible Nevertheless, the addition of the second pane of regular glass increases the STC efficiency in comparison to one-pane glass. This is certainly primarily due to the air gap, which is a good acoustic insulator. https://acoustic-laminated-glass94295.tribunablog.com/the-acoustic-laminated-glass-diaries-53129072