Homasote is good for sound deadening. But if you are using homasote how much quieter would Woodlands track bed be in addition to or in substitution for homasote on a 3/4 inch plywood base?
Also is it more effective to cover the plywood completely rather than just the roadbed area? Obviously the other sound deadening other than woodlands. [;^)
Also I've also seen people using foam board. However I've not seen it elaborated on exactly the foam type/brand used and if it is more or less effective than my first query?