This invention provides a method, apparatus, and device for
processing emergency broadcast signals, relating to the field of communication
processing technology. The method includes: acquiring an emergency broadcast
signal in a first
frequency band to be propagated, wherein the emergency broadcast
signal in the first
frequency band includes at least one piece of information to be propagated; filtering the emergency broadcast
signal in the first
frequency band to obtain a target purified signal; performing at least two frequency conversions on the target purified signal to obtain a second frequency band signal supported by a passive indoor
distribution system; merging the second frequency band signal with a
public network signal within the passive indoor
distribution system to obtain a merged target transmission signal; and evenly distributing the target transmission signal to multiple preset transmission
branch links, and transmitting it through the multiple preset transmission
branch links to a receiving end in a corresponding preset target area for
parsing to obtain the corresponding information to be propagated. The solution of this invention achieves stable transmission of FM emergency broadcast signals in a passive indoor
distribution system.