Control of position and taking of signal distribution in auditorium - using controller to vary amplitude and phasing of signals to output stages

摘要

The dome of a room such as a planetarium (19) has a number of loudspeakers (1-12) distributed around the surface. The signals transmitted to the loudspeakers are provided by voltage controlled amplifiers within a control unit (24) that receives inputs from a computer (25). The signals can be controlled in both amplitude and delay phasing to vary the sound effect, the controller may also be coupled to other media, such as lighting, lasers, etc for multi media show effects. The specific effects generated can be controlled by manual input from aa joystick unit (27). ADVANTAGE - Provides control of signal distribution and effect in large auditorium.