SOUND TRANSMISSION SYSTEM

摘要

The present invention addresses the problem of providing a system that effectively and securely transmits sound at low cost even in a wide area or even when objects of transmission are sparsely present in an area. The problem is solved by a sound transmission system characterized by being provided with an unmanned aircraft that is able to stop at a point in the air, and a monitoring center that is able to perform wireless communication with the unmanned aircraft, the unmanned aircraft comprising a sound output means that is able to output sound.