| 摘要 |
<p>The invention relates to a speaker type sound producing system for use on large open-air areas during sports events organised thereon. The system makes it possible to produce the background sound of a stadium by supporters which are located outside the sports event area by relaying their own voice and also by reproducing recorded sound effects and to additionally stimulating sportsmen during sporting competitions. The stadium (1) sound system comprises loudspeakers (2), a set of telephones of a mobile telephone network (3), a receiver of signals of the mobile telephone network (4), a control and received signal processing unit (5), an interface unit (6), an audio signal generating and transmitting unit (7), a video signal generating and transmitting unit (8) and an electronic video display (9).</p> |
