Building a new home on top of a hill. Realized too late that the highway noise (1/4 mile away) and street noise down below about 300 yards is so loud that I can hear it in the house. The house already has vinyl siding on it and drywall has been finished on inside. I am desparate. Any idea?. I thought of 1. active sound cancellation in the master bedroom. 2. Very tight fitting solid plywood wood shutters with felt to cover inside of double window in master bedroom 3. Riping the sliding off and installing foam installation on the outside of the house. Help!