I have decided to build this website as a resource for anyone interested in acoustic calculations and soundproofing evaluation. There is lot of information about these subjects available on the Internet (as is about most subjects). However, lot of the information is incomplete, misleading, inaccurate, wrong, or even fraudulent. It is hard to tell the
The ability of a wall assembly to attenuate sound is tested and quantified as Sound Transmission Class (STC). Wikipedia defines STC as: “Sound Transmission Class (or STC) is an integer rating of how well a building partition attenuates airborne sound. In the US and Canada, it is widely used to rate interior partitions, ceilings, floors,
There are many soundproofing products designed and marketed specifically for soundproofing. One of them is Sonopan by MSL. This article compares wall assemblies with Sonopan to generic wall assemblies and assemblies with SilentFX and Soundbreak.
There are many products that are designed specifically for soundproofing. An acoustical engineer or an architect must select the one product that offers the best soundproofing value for the cost of the complete assembly.
In this article I compare acoustical performance and STC of two similar assemblies, one with 25 gage steel studs, one with wood studs. Both assemblies have two layers of 5/8” drywall with Green Glue between layers on one side and one layer of 5/8” drywall on the other side. Stud spacing is 24 inches and
In this article I compare soundproofing acoustical performance and STC of similar wall assemblies with wood and steel studs. Assemblies containing AcoustiBlok and Green Glue are compared.