Designing for sound reduction. Modern building designing designs emphasize liberal use of glass. Meanwhile, building owners and occupants demand comfort- including reduced ambient noise. However, sounds transmittance can be significant through glazing made with ordinary glass. This is especially a challenge for designers and engineers developing urban products along highways, railroads, and airports. The answer is not less glass but new materials with proven sound-damping performance. Increasingly, laminated glass manufactured with architectural tri-layer acoustic PVB inter-layers have proven to be a viable solution. The dual problem of retaining architectural integrity while simultaneously providing the most practical, effective form of sound control available in glazing systems can now be answered with a single product.