According to the functional requirements of modern buildings, a background music system should be set up. A background music system under normal circumstances is an indispensable part of creating a good, relaxing external environment.

The background music and public broadcast/emergency broadcast system is a multi-functional audio broadcast system, including background music, public broadcast, emergency fire broadcast and other parts. Under normal circumstances, background music provides pleasant and comfortable music to offices, public corridors and other public places. The public broadcasting station provides voice broadcasting to the entire building. Emergency broadcast is to provide automatic or manual voice broadcast to the whole building when encountering fire or other emergencies, guiding evacuation and directing accident handling. The PA system zoning is consistent with the fire protection system zoning. During normal broadcasting, the volume can be adjusted by the on-site volume controller. When the broadcasting system receives the fire accident signal, it can automatically switch to the emergency broadcasting state and broadcast the fire accident to the accident floor and its upper and lower floors at full power volume. , the accident broadcast content is pre-recorded into the digital sound synthesizer in a variety of voices.