Intercom calling method and device in special operation environment

The invention discloses a talkback calling method and device in a special working environment, and relates to the field of wireless talkback communication, the talkback calling method is applied to a central communication system and a plurality of communication terminals, the plurality of communication terminals are interconnected with the central communication system, and the communication terminals are used for calling a talkback call in a voice activation detection mode. The acquired real-time sound signals are detected, the talkback call is automatically completed under the condition that a PTT key is not needed, the probability of false triggering of the talkback call by noise signals in the environment is reduced by combining volume detection and direction-of-arrival estimation, and the voice recognition and voiceprint detection methods are combined with different permissions of the plurality of communication terminals, so that the talkback call is more accurate. The requirement for work command and dis