Features
The background music is abbreviated as BGM, which is the abbreviation of Back ground music. Its main function is to cover up the noise and create a relaxed and harmonious atmosphere. If the listener does not listen intently, he cannot distinguish the location of the sound source. The volume is relatively low. This kind of music creates a relaxed and pleasant atmosphere. Therefore, there are two effects of background music, one is to cover up the environmental noise psychologically, and the other is to create an atmosphere suitable for the indoor environment. It is widely used in hotels, hotels, restaurants, shopping malls, hospitals, office buildings and so on.
1. Principle of Public Broadcasting System
· Use the original computer network without rewiring, only need to set up the internal audio line of the broadcast point, and the digital transmission between each point up to several hundred kilometers distance to achieve remote broadcasting;
· Through program control to achieve fixed-point, sub-area, and all-broadcast speech, when a traffic accident occurs in the tunnel, the dispatch center can issue information to the vehicles in the tunnel, and organize the dredging of vehicles;
· Local microphones and program broadcasts can be performed at the toll booths and service areas. The monitoring and management center has the highest priority and can interrupt local broadcasts by force;
· Background music is automatically played at regular intervals, unattended, and the system is set to automatically switch the power of the broadcast point amplifier;
· A paging microphone is set in the main control room and the leading office of the broadcast for business notification and speech. Two-way intercom can be conducted between the paging microphone and any terminal. The terminal can actively call the main control room, which is equivalent to an emergency communication system.
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