Sound transmission in strapped service cavity?

Has anyone experienced increased room-to-room sound transmission in a house with a strapped service cavity (either ceiling or wall), and no insulation in the service cavity?I am not facing this… Has anyone experienced increased room-to-room sound transmission in a house with a strapped service cavity (either ceiling or wall), and no insulation in the service cavity?I am not facing this…Read MoreGreenBuildingAdvisor