How to reduce sound transmission through interior partition walls
The key to building smaller homes which don't sacrifice quality of life is ensuring that they are designed to make the best use of their space no matter how limited. However, you must also ensure that there is sufficient privacy by eliminating unwanted sound transmission through walls. In this way, smaller homes can give the illusion of greater distances between living spaces and bedrooms.
For the Edelweiss House, we installed soundproofing batts in the interior partitions and for the mechanical room, we added soundproofing batts along with resilient channels and 2 layers of 5/8 drywall.