| Connecting Sound Rooms (Resonance Tube): The Connecting Sound Room is essentially a Smart Sound Room that connects to other smart rooms. Waves incident on the boundary between two Connecting Sound Rooms of different media will reflect at the boundary or will be refracted as they cross it. Connecting Sound Rooms allow users to investigate reflection, transmission, and refraction of waves at boundaries. To connect Connecting Sound Rooms, you only need to move or place one room close to another one. Specifically, if two Connecting Sound Rooms move to within about 20 pixels of each other horizontally, the two rooms connect automatically along their vertical (right or left) walls. You can place up to ten Connecting Sound Rooms. The number you can connect is limited only by the width of the simulator. With the Select tool, you can move and resize Connecting Sound Rooms. You cannot change a room's height. The room can be between 100 and 400 pixels wide. You cannot make Connecting Sound Rooms smaller than the distance between the speakers and microphones they contain. The top and bottom walls of Connecting Sound Rooms totally reflect incident waves. Neither this property nor the "openness" of the right and left walls can be changed. In the Connecting Sound Room's Properties Box, you set the medium in the room. The default medium is water, but you can change that to steel, air, mercury, aluminum, granite, helium, carbon dioxide, or vacuum. These are the same media choices as those for the Smart Sound Room. The Connecting Sound Room is one of three media rooms used in the Waves & Sound simulators.