moraine,
One more thing: Make sure you get "O-gauge" cork roadbed. (That's what gauge Lionel trains run on.) Otherwise, it will be too small for your purposes.
Tom
https://tstage9.wixsite.com/nyc-modeling
Time...It marches on...without ever turning around to see if anyone is even keeping in step.
Are you looking for something quick or inexpensive? Cork or foam roadbed would help to quiet things down. (Foam more than the cork). Woodland Scenics makes the foam roadbed in rolls but it won't be an inexpensive proposition. Midwest Products makes good cork roadbed. Both can be found at your local hobby store (LHS).