Noise reduction percentages is often misleading, and like statistics, can lie. The fundamental trouble is the human ear. Given that the setting gets quieter, the ear will become more sensitive to noise. Which means many of the noise reduction furnished is shed. The table under displays standard window STC https://trevorpgsyc.tusblogos.com/35508692/not-known-facts-about-noise-reduction-benefits-of-acoustic-windows