noise fade transitions are a set of iMovie transitions that will make a clip disappear into, or appear out of, something that looks like Ã¢??signal noiseÃ¢?? (also called Ã¢??static noiseÃ¢??. pull the antenna cable from your TV set, and youÃ¢??ll see what that looks like - if your TV is old enough and wonÃ¢??t shut down the picture because of a missing signal).