Apparatus for entertaining a crowd which is operative in response to sensed activity of crowd members

摘要

An apparatus for entertaining a crowd comprises a plurality of microphones 3a, 3b, 3c, 3d feeding into a microcomputer 1 and a large display 2 controlled by the microcomputer. The microcomputer 1 is programmed to control the large display 2 in dependence on values representing properties of signals from the microphones 3a, 3b, 3c, 3d. Elements of the displayed image may be controlled by the microcomputer 1 to represent the values of the properties of signals from different microphones or groups of microphones independently, or the difference between values for different microphones or groups of microphones. In another embodiment, screens are located at different locations and controlled to display the same image. This image is altered in dependence on the signals output by microphones at the two locations. Sensors other than microphones are also suggested. Also, the system may be used to control the direction of spotlights rather than images on a screen.