Glass of all thicknesses could have this resonance frequency, so Irrespective of how thick you go, there will always be a frequency at which the glass will really make noise louder. This can be the purpose why acoustic window programs will employ glass of two diverse thicknesses – to combat https://raymondsngkp.fitnell.com/67453811/the-fact-about-acoustic-insulation-for-sash-windows-that-no-one-is-suggesting