The broadcasting system in large shopping malls is already an indispensable device. Whether it is the playback of background music, the guidance of emergency, or the guidance of daily shopping, it is necessary to use broadcast equipment.

Network broadcasting system design
Main control room: The network public relations broadcasting control center is located in the fire control room or weak power main room, equipped with system server, cd machine, tuner, monitor speaker, network fire alarm, broadcast microphone, power sequencer. The system server performs broadcast paging control, background music playback control, support for broadcast system data and audio transmission, and supports functions such as zoned scheduled playback, terminal on-demand, temporary insertion, and fire emergency broadcast.

Sub-control room equipment: Set up a network paging station in the administrator's office. Administrators can issue emergency notifications without going to the equipment room.

Peripheral equipment: The power amplifier is connected by decoding the terminal. Generally, there are two kinds of wall decoding terminal and rack decoding terminal, and the mall can select the rack decoding terminal. Connect the amplifier and background music speakers through the audio cable and amplifier connection and then through the pvv cable.
Public area background music: Through site survey and project design, the integrated sound reinforcement environment to design the speaker, first need to consider the background music speaker playback effect does not appear local area partial sound and the sound field dead angle, in addition to ensure that the background music will not be played in daily play Affect people communication.

Fire-fighting linkage in public areas: The system is equipped with a fire-fighting center linkage function. The network fire-fighting linkage terminal can receive warning signals from the fire-fighting center, and communicate with each broadcast zone alarm through network digital transmission. When the alarm signal from the fire center is received, the corresponding work area of the networked public address system is automatically activated to force the emergency broadcast state to be inserted.

Public area emergency broadcast: When an emergency broadcasts an emergency, a broadcast of personnel evacuation is performed. The system can select a broadcast function in the microphone setting program control combination area and randomly combine the areas to be broadcast.