51 results about "Broadcasting technology" patented technology

The invention provides an emergency broadcast playing method and system for disasters in an outdoor scene, and relates to the technical field of emergency broadcasts, cameras in a region are adopted to monitor the evacuation state of personnel in the outdoor scene in real time, and an emergency broadcast system and a rescue system are triggered through the evacuation state to perform linkage, so that bidirectional information transmission is realized; and the priority of the broadcast content played by the emergency broadcast is adjusted according to different instruction information in bidirectional information transmission, so that the broadcast content has pertinence, and rescue workers can receive key instructions.

The invention relates to the technical field of digital network broadcasting, in particular to a multifunctional integrated digital network broadcasting system based on an intelligent algorithm. Comprising a multi-modal data acquisition module, a broadcast content generation module, a broadcast scheduling decision module, an abnormal interference suppression module and a terminal collaborative feedback module. The multi-modal data acquisition module collects multi-source information of a coverage area in real time. And the broadcast content generation module performs intelligent clustering analysis based on the information to generate structured content. And the broadcast scheduling decision module adopts a graph attention scheduling algorithm to optimize a scheduling strategy. And the abnormal interference suppression module identifies an interference source by using a residual convolutional network, and repairs an interfered signal through a recurrent neural network. And the terminal collaborative feedback module executes playing and data feedback, and dynamically adjusts receiving parameters and pushing strategies by means of federal reinforcement learning. The intelligent level, the adaptability, the user satisfaction and the overall service efficiency of the digital network broadcasting system are remarkably improved.

The invention provides a 5G NR broadcast terminal cross-process multi-service scheduling system, and belongs to the technical field of 5G communication, and the system comprises an application interface module which is responsible for interacting with other applications, providing a service list and processing a subscription request; the task scheduling module focuses on solving broadcast session opening conflicts and reasonably arranging a task execution sequence; the data transmission module is responsible for data transmission in different modes; the data storage module realizes task list and file cache management; and the chip adaptation module carries out packaging adaptation on SDKs of different chips. According to the invention, the terminal performance can be optimized, the user experience can be improved, and the advantages of the 5G NR broadcast technology can be fully exerted.

The invention discloses an emergency broadcasting method and system integrating a Beidou short message and a LoRa technology, and relates to the technical field of satellite communication and emergency broadcasting, in particular to the emergency broadcasting method and system integrating the Beidou short message and the LoRa technology. Comprising an emergency broadcast platform, a Beidou short message transmission network, a LoRa Internet of Things distribution network and a multimode emergency broadcast terminal. Cross-regional backbone transmission without dependence of a ground network is realized through a Beidou satellite link, and localized and low-cost data distribution and terminal access are carried out by using a LoRa network. The multi-mode terminal supports multi-channel receiving, broadcasting and state returning and has multi-energy power supply guarantee. According to the invention, an emergency information transmission system with integrated space and ground, longitudinal penetration and transverse cooperation is formed, and high reliability, wide coverage and rapid transmission of emergency information in an extreme environment are ensured.

The invention discloses a high-reliability digital broadcasting system and an abnormal fast continuous broadcasting method, and relates to the technical field of communication technology and emergency broadcasting, and the high-reliability digital broadcasting system comprises a server A, a server B, broadcasting terminal equipment and a server abnormity recovery module, the server A is provided with two redis sentry nodes, and the server B is provided with one redis sentry node; the server exception recovery module is used for switching the broadcast and quickly continuing the broadcast when the server is exceptional; when a server is started, a redis monitoring sub-process is started, and the redis monitoring sub-process performs fault transfer and master and slave node adjustment according to a local state when a master node is offline by checking the local state, the master node state and redis sentinel node information. According to the invention, when the server is abnormal, the broadcast task which is being executed can be continuously executed within one second, so that the continuous playing efficiency is greatly improved; according to the method, the redis sentry cluster is deployed by using the two servers, so that the number of the servers can be reduced, and the cost is effectively reduced.

This invention provides a helicopter-mounted seeding device based on a novel broadcasting technology, relating to the field of broadcasting technology. The helicopter-mounted seeding device includes three outriggers with isosceles triangular endpoints and a hopper fixed between the three outriggers. Two of the outriggers running longitudinally are each fixedly equipped with stabilizing rudders to increase balance. On opposite sides of the three outriggers, from top to bottom, are an upper beam, a connecting beam, and a lower beam. The connecting beam is triangular and includes a left connecting beam, a rear connecting beam, and a right connecting beam. A power supply is mounted at the midpoint of the upper end of the rear connecting beam via a power mounting plate. Gasoline engine mounting plates are mounted on the upper ends of the left and right connecting beams via No. 4 bolts, and a gasoline engine is mounted on the gasoline engine mounting plates. This invention not only meets the requirements for aerial seeding of various crops but also reduces the impact of cylindrical circulation and increases the balance of the hopper by adding a stabilizing rudder structure.

The embodiment of the invention relates to the technical field of audio and video broadcasting, in particular to a multi-terminal audio and video synchronization method and device, a video transmission system and a readable storage medium, and the method comprises the steps: generating a first frame starting signal for synchronization through a first frame starting signal generation module, and outputting the frame starting signal to each audio and video terminal as a synchronization signal; a second frame starting signal generation module is arranged in each audio and video terminal, a second frame starting signal is obtained through the second frame starting signal generation module, a clock frequency deviation value is obtained through calculation according to the first frame starting signal and the second frame starting signal, and finally a synchronous clock is obtained; and each audio and video terminal synchronously outputs the original audio and video data according to the clock frequency deviation value and the first frame starting signal. The method is low in implementation and deployment difficulty, low in cost burden and good in flexibility.

The invention provides a group control method based on a wireless expansion broadcast technology, and relates to the technical field of wireless communication. The method is applied to a group control system, and comprises the following steps: a mobile terminal sends a broadcast packet to a node device, the node device being a sub-device in a sub-device group; after acquiring the broadcast packet, the node equipment broadcasts the broadcast packet to other sub-equipment in the sub-equipment group; the broadcast packets comprise a first broadcast packet and a second broadcast packet, the first broadcast packet is a basic broadcast packet, the second broadcast packet is an extended broadcast packet, and the second broadcast packet comprises a group control instruction; the sub-equipment acquires a second broadcast packet based on the first broadcast packet after acquiring the first broadcast packet, and extracts a corresponding control instruction from the second broadcast packet; and the sub-equipment in the sub-equipment group responds to the control instruction to execute corresponding operation. According to the method, the transmission efficiency is improved, and the real-time performance and the consistency of sub-device group control are improved.

The invention provides a millisecond-level forced insertion intelligent adaptation method and system for a multi-mode emergency broadcast large screen, and relates to the technical field of emergency broadcast, and the method comprises the steps: 1, receiving an emergency broadcast signal from a superior emergency broadcast platform and at least one path of external multimedia input signal; and step 2, performing preprocessing and caching based on a divide-and-conquer strategy on the emergency broadcast signal and the external multimedia input signal, decomposing each path of input signal into independent signal processing subtasks by the divide-and-conquer strategy, performing decoding and caching operation on each subtask in parallel, and endowing the emergency broadcast signal with the highest priority. According to the invention, rapid broadcasting of the emergency information, multi-mode fusion display and intelligent recovery of the playing state are realized.

The invention discloses a broadcast equipment noise management and control system in the technical field of broadcast, the system can be carried on broadcast equipment with a processor for use, the system comprises a processing center, and the processing center comprises an audio collection unit, an audio processing unit and an audio processing unit, the audio conversion unit is used for converting audio signals of the mobile phone and comprises a conversion module; the audio analysis unit is used for analyzing audios and sound waves and comprises a waveform checking module, a waveform analysis module and a phase recognition module; and the noise processing unit is used for processing and reducing the audio noise. The audio noise reduction and the volume self-adjustment are carried out on the basis of the cross-correlation algorithm and the cosine similarity algorithm by acquiring the played audio and the environmental noise data in real time, so that the noise reduction operation of the broadcasting equipment is realized, the method can be applied to various broadcasting equipment, the audio noise during broadcasting is reduced, and the broadcasting effect is improved.

This invention discloses a low-power DTMB transmitter carrier recovery and constellation mapping enhancement method and platform, belonging to the field of terrestrial digital television broadcasting technology. The transmitter samples feedback signals from the intermediate frequency (IF), RF preamplifier, or power amplifier output. Based on the PN420, PN595, or PN945 frame header characteristics, it performs cyclic correlation, sliding correlation, or segmented correlation to obtain frequency offset, phase error, and correlation confidence, and drives a digital phase-locked loop to complete transmitter carrier self-calibration. The system generates non-uniform pre-scaling and pre-rotation parameters based on the feedback constellation error, causing the antenna port constellation to converge to a standard DTMB constellation; enhanced constellation mapping is enabled when supported by a dedicated receiver. The low-power control module reduces power consumption and improves transmission quality based on correlation confidence, EVM scheduling correlator, phase calculation, constellation pre-compensation, digital predistortion, and Doherty power amplifier bias.

The invention discloses an OTA upgrading method and system based on 5G NR broadcast, belongs to the technical field of 5G NR broadcast, and aims to solve the technical problem of how to improve the OTA upgrading efficiency, reduce the cost and improve the OTA upgrading safety and user experience. According to the technical scheme, the method comprises the steps of upgrading plan making and upgrading information processing, wherein an OTA upgrading server makes a detailed OTA upgrading plan according to the type and version condition of terminal equipment, and the upgrading time, the upgrading object and the upgrading content are determined; according to the OTA upgrading plan, upgrading information including an application ID, a version description, verification information and an applicable terminal identifier is generated and arranged into a format suitable for 5G NR broadcast transmission, the upgrading information is encrypted, encrypted upgrading information is generated, and the upgrading information, the encrypted upgrading information and the OTA upgrading plan are stored at the same time; broadcasting resource allocation and session establishment; broadcasting upgrading information; and the terminal equipment receives and processes.

This invention discloses a multi-terminal network audio broadcasting system, belonging to the field of audio broadcasting technology. It includes a central server and multiple distributed audio terminals. The central server comprises: a geographic information module for storing digital elevation models and the deployment locations of each audio terminal; an adaptive coding module for dynamically adjusting the redundancy coding rate of the audio stream based on link quality feedback reported by each audio terminal; and a routing calculation module for generating a multi-hop broadcast tree based on a terrain-compensated propagation loss model. Each audio terminal includes a positioning module for collecting its real-time geographic coordinates and reporting them to the central server. This invention achieves accurate path loss calculation, adaptive redundancy coding, dynamic power adjustment, intelligent broadcast tree construction, efficient packet loss recovery, and dynamic relay coverage, improving the coverage, stability, and energy efficiency of audio broadcasting.

The invention discloses a global digital emergency broadcast and emergency start fusion method and system, and relates to the technical field of digital emergency broadcast, and the method comprises the steps: carrying out the parallel scanning of DAB, DRM, CDR, FM and AM broadcast frequency bands through a multimode radio frequency front end of terminal equipment, and continuously monitoring each standard beacon frame to detect an emergency identifier; when any system detects an emergency identifier, event type, grade, position and time information is extracted, fusion verification is carried out through cross-system semantic alignment and a credibility scoring model, and an emergency credibility score ETS is generated; if the ETS is larger than a preset threshold value, it is judged that the emergency event is an effective emergency event, the emergency event is packaged into a lightweight emergency broadcast compressed packet EBP, and the EBP comprises an event unique identifier, a geographical range, a response action list and a digital signature; and activating a short-distance communication module of the terminal, and carrying out decentralized relay propagation on the EBP to adjacent equipment in the LoRa or BLE Mesh network based on a geographical hash routing algorithm.

The utility model belongs to the technical field of medium-wave broadcasting, and relates to a one-tower multi-frequency self-standing medium-wave transmitting tower, which mainly comprises a plurality of supporting upright posts, a feeder line central upright post for fixedly transmitting a transmitting signal, and a plurality of insulating devices which are arranged on the supporting upright posts and partition the supporting upright posts into independent transmitting units, the height of each transmitting unit can be determined according to the required transmitting frequency, and the tower column is further adjusted to achieve the optimal transmitting effect; and compared with a traditional launching tower, the contact area with air is reduced, the device can be suitable for different seasonal changes, manual adjustment of the network is not needed, and adaptability and reliability are high. According to the utility model, the integrated self-standing tower column is provided with a plurality of transmitting units, so that the integrated self-standing tower column can simultaneously transmit various signals with different frequencies, the structure is simplified, the cost is reduced, the occupied area is saved, and the signals are efficiently transmitted; the whole design is scientific and reasonable, the structure is simple, the land cost can be effectively saved, the manpower demand is reduced, and the application degree is improved.

The application relates to an artificial intelligence technology and discloses a multi-person cooperative virtual interaction method based on MR recording and broadcasting technology, which comprises the following steps: constructing a teaching auxiliary courseware according to relevant course data of any course, expanding the teaching auxiliary courseware to obtain an assembly interaction system, performing orthogonal transformation on a three-dimensional virtual model constructed based on the assembly interaction system to obtain a transformed model, mapping the transformed model to a world coordinate system and constructing a virtual simulation platform corresponding to the transformed model in the world coordinate system, creating a stream socket corresponding to a user terminal and establishing a connection between the user terminal and the virtual simulation system based on the stream socket, and enabling a user corresponding to the user terminal to perform a virtual interaction operation in the virtual simulation system when a content interaction request is received. The application further discloses a multi-person cooperative virtual interaction device based on the MR recording and broadcasting technology. The application can solve the problem of low efficiency of multi-person cooperative virtual interaction based on the MR recording and broadcasting technology.

The application discloses a media broadcast master-slave node switching method and system and a medium, relates to the technical field of media broadcast, and realizes real-time collection of master node playing state update information, running information and master node fault information on the premise of keeping the time synchronization of a slave node and a master node; the master node playing state update information is analyzed, the local playing state cache of the slave node is updated according to the analysis information, and an AI monitoring model performs state evaluation on the master node; when the master node fault information is collected or the master node state is evaluated to be abnormal, a switching instruction is triggered; the switching instruction is executed based on an application layer switching protocol; the scheme is improved in the method based on the prior art, high-precision time synchronization technology, an application layer protocol and artificial intelligence monitoring are fused, the audio stream can be rapidly and seamlessly switched to the slave node when the master node is down or the network is abnormal, the continuity of client playing is ensured, and the reliability of audio broadcast is improved.

The embodiment of the invention relates to the technical field of audio and video broadcasting, in particular to a sound box overload detection method, device and system, and the method comprises the steps: obtaining the audio data of sound box equipment, and carrying out the classification processing of the audio data, and obtaining a root mean square value; inputting the root-mean-square value into a preset overload prediction model to obtain an overload prediction value; performing electrical detection processing and overload judgment processing on the sound box equipment to obtain an actual state value of the sound box equipment; and performing dynamic charging control on the sound box equipment according to the overload prediction value and the actual state value. By comprehensively analyzing the frequency domain characteristics and the electrical parameters of the audio data, real-time prediction of the overload risk and dynamic charging strategy adjustment are realized, and the method has the advantages of predicting the overload risk of the loudspeaker box in real time and dynamically adjusting the charging strategy to avoid equipment overload, so that the system safety is improved, and the service life of the equipment is prolonged.

The utility model belongs to the technical field of emergency broadcast, and discloses a high-reliability emergency broadcast active publishing terminal, which comprises a master control intelligent processor, a communication module, a camera shooting assembly, a sensor assembly, an FM module, an audio coding and decoding chip and an audio power amplifier module, the communication module is in signal connection with the master control intelligent processor; signal input ends of the camera component and the sensor component are connected with a signal output end of the master control intelligent processor; the master control intelligent processor is in signal connection with the FM module and the audio coding and decoding chip. The signal output end of the FM module is connected with the signal input end of the audio coding and decoding chip; the signal output end of the audio coding and decoding chip is connected with the signal input end of the audio power amplifier module. According to the utility model, on the basis of an environment perception target identification technology, different sensors are matched to communicate with the master control intelligent processor according to scene requirements, so that the surrounding environment can be accurately identified.

The invention discloses a self-security emergency broadcast platform based on a dynamic secret protocol, and particularly relates to the technical field of emergency broadcast. The method comprises the following steps: establishing a secure channel between an emergency broadcast control end and a broadcast terminal, negotiating an initial system secret, calculating dynamic secret data based on a preset hash function, carrying out dynamic updating on the dynamic secret data and a current system secret, and realizing equipment identity re-authentication by utilizing a symmetric encryption process. According to the method, a session key special for a current communication session is generated through a key derivation algorithm, the generated session key is used for carrying out encryption transmission and decryption receiving on an emergency broadcast instruction, finally, abnormal state judgment and safety control are carried out on a broadcast terminal, and continuous safety of the emergency broadcast instruction transmission process and reliability of equipment operation are ensured.

The invention provides a digital television emergency broadcast dynamic scheduling method and system based on state estimation, and relates to the technical field of emergency broadcast broadcasting, and the method comprises the steps: S0, dividing a target region into a closed region and an open region based on the type of a digital television; the method comprises the following steps: S1, when current emergency information related to a target area is received, obtaining historical startup and shutdown logs of all household digital televisions in a closed area, and obtaining initial coverage ranges of all public digital televisions on grids in an open area and historical people flow data collected by all cameras; s2, pre-estimating a first coverage range generated when the household digital television plays the current emergency information based on a historical startup and shutdown log; s3, estimating a second coverage range generated by spreading the current emergency information played by the public digital television on the grid based on the historical people flow data and the initial coverage range; and S4, rendering the target area based on the first coverage range and the second coverage range.

The application discloses an audio transmission method of a networked broadcast system and the networked broadcast system. A networked host receives audio messages to be sent, determines the serial numbers corresponding to each audio message, sequentially puts the audio messages into a sending buffer according to the serial numbers, establishes a sliding window in the sending buffer, and sends the audio messages in the sliding window to a networked decoding terminal. After receiving the audio messages, the networked decoding terminal feeds back acknowledgement packets corresponding to the audio messages. If the networked host determines that the acknowledgement packets corresponding to all the audio messages in the sliding window have been received, the networked host deletes the audio messages in the sliding window in the current sending buffer. The method can feed back the receiving conditions of the audio messages through the networked decoding terminal, facilitates the realization of packet loss recovery, is beneficial to reducing the phenomenon of audio playing lag, meets the normal business operation requirements of customers, and improves user experience. The application can be widely applied in the field of broadcast technology.

This utility model relates to the field of public address technology, specifically to an ultra-thin digital flat panel loudspeaker device for optical network visual linkage broadcasting. It includes an optical network interface, a frame assembly, a surface sound source system, a signal processing module, a visual recognition component, and a cluster collaboration component. The frame assembly includes a surrounding frame integrating the optical network interface, a metal base plate, an insulating base plate, and sound-permeable metal mesh panels on both the front and back. By relying on the ring network cascading function of the network switch module to form serial broadcast terminal nodes, and combining this with the volume differentiation control of the digital power amplifier module to form directional guidance, it effectively improves the efficiency of emergency broadcasting and evacuation during disasters. Furthermore, by relying on optical cables to construct a ring network dual-link redundant network architecture, it forms a fully optical network broadcasting system, solving the problem of low connection reliability that easily occurs when traditional network cables are connected to loudspeakers, and avoiding the technical drawbacks of traditional network cables such as network interruptions caused by electromagnetic interference and high data transmission error rates, ensuring stable transmission of broadcast signals in complex environments.

The application relates to the technical field of broadcasting, and discloses a directional broadcasting method, device and equipment of a sound box and a storage medium, the method comprising the following steps: in a preset first time window, receiving a first sound signal by using a plurality of sound sensors; calculating a covariance matrix of the sound signal by using a linear constraint minimum variance algorithm, and determining a direction vector of a target direction; determining a target weight vector according to the direction vector of the target direction and a constraint condition thereof; the target weight vector is a beamforming weight vector; solving the target weight vector by using a Lagrange multiplier method to obtain a first optimal weight vector; performing weighted summation on the first sound signal by using the first optimal weight vector to generate an output signal; and playing the output signal by using the sound box. By using the technical scheme of the application, the signal of a required direction can be effectively enhanced, and the interference from other directions can be suppressed at the same time by using a reasonable signal processing and control strategy, so that high-quality audio output is realized.

The invention discloses an audio broadcast playing method, system and device and a readable storage medium, and relates to the technical field of communication broadcast. The method comprises the following steps: respectively acquiring an initial digital broadcast signal and an initial frequency modulation broadcast signal; performing parallel decoding on the initial digital broadcast signal and the initial frequency modulation broadcast signal to obtain a first broadcast signal corresponding to the decoded initial digital broadcast signal and a second broadcast signal corresponding to the decoded initial frequency modulation broadcast signal; and switching and playing the first broadcast signal and the second broadcast signal based on a preset quality standard. In this way, digital broadcast signal and frequency modulation broadcast signal programs can be obtained simultaneously through a single terminal device, and inconvenience in carrying and operation is avoided; through parallel decoding and seamless switching playing of the digital broadcast signal and the frequency modulation broadcast signal, listening continuity is improved.

This invention provides an earthquake early warning method based on edge computing in the field of emergency broadcasting technology, comprising the following steps: Step S10: Acquire the output audio of the earthquake early warning terminal and convert the output audio into PCM data through an analog-to-digital converter chip; Step S20: Convert the PCM data into sample data and generate a waveform file based on the waveform of the sample data; Step S30: Perform a silence check based on the waveform file and generate a silence check result; Step S40: Start or stop the emergency broadcasting plan based on the silence check result; Step S50: The earthquake early warning terminal uses the Viterbi algorithm to match the waveform file with the corresponding plan file, and performs earthquake early warning based on the plan file and the emergency broadcasting platform. The advantages of this invention are: greatly improving the coverage, timeliness, convenience, and reliability of earthquake early warning.

This invention discloses an automatic broadcasting method and system based on artificial intelligence, relating to the field of broadcasting technology. The key technical aspects include a sensing component, a resource library, a logic management component, a human-computer interaction component, and a front-end device. The sensing component is used to collect environmental and network data; the resource library is used to store and provide the data and algorithm resources required for system operation. The sensing component, resource library, logic management component, human-computer interaction component, and front-end device adopt a distributed architecture. The logic management component can automatically trigger the front-end device to broadcast based on the input from the sensing component and the resources in the resource library through computational reasoning. The effect is that the functional combination of different components meets the broadcasting needs of various scenarios, including daily notifications, safety warnings, and emergency dispatch.

The invention discloses an electric power training room intelligent management system based on an unmanned recording and broadcasting technology and a method thereof, and belongs to the technical field of supervision processing. The method is used for solving the technical problem that in an existing scheme, reliability and comprehensive autonomous supervision analysis and management effects of implementation of an intelligent risk identification scheme of an electric power practical training room are poor. The method comprises the following steps: carrying out routine abnormal whole-course supervision and recording on electric power practical training operations of different students in an electric power practical training room to obtain first practical operation abnormal record data corresponding to the different students, and carrying out whole-course supervision and autonomous abnormal identification recording on the electric power practical training operations of the different students through a monitoring identification technology; second practical operation abnormity record data corresponding to different trainees are obtained, and processing analysis of practical operation abnormity autonomous identification influence is carried out on the second practical operation abnormity record data according to the first practical operation abnormity record data corresponding to different trainees; and performing targeted optimization training on intelligent identification defects of different abnormal types in a self-adaptive manner according to an analysis result.

The invention relates to the technical field of communication broadcast, and provides a method and a system for quickly creating a broadcast packet in an emergency situation, and the method comprises the steps: carrying out the identity verification of a request object to obtain the actual authority information of the request object, carrying out the emergency broadcast request confirmation according to the actual authority information, and based on the emergency broadcast request confirmation, sending a broadcast packet to the request object. The method comprises the steps of obtaining current position information of a request object, performing primary screening according to the current position information, determining an initial equipment list, determining a request object range, performing secondary screening on the initial equipment list according to the request object range, determining a target equipment list, and performing terminal equipment selection based on the target equipment list. And the terminal equipment determines a broadcasting mode after selection, and generates a broadcasting instruction according to a terminal equipment selection result and the broadcasting mode. According to the invention, rapid, accurate and safe broadcasting of the emergency broadcast is realized, and the emergency response efficiency and the instruction transmission accuracy are greatly improved.

The invention discloses a media broadcast master and slave node switching method and system and a medium. Relates to the technical field of media broadcasting. On the premise that time synchronization of the slave node and the master node is kept, master node playing state updating information, operation information and master node fault information are collected in real time; analyzing the playing state update information of the master node, updating the local playing state cache of the slave node according to the analysis information, and performing state evaluation on the master node by the AI monitoring model; when the fault information of the main node is collected or the state of the main node is evaluated to be abnormal, triggering a switching instruction; executing the switching instruction based on an application layer switching protocol; according to the scheme, the method is improved on the basis of the prior art, and the high-precision time synchronization technology, the application layer protocol and artificial intelligence monitoring are fused, so that the audio stream can be quickly and seamlessly switched to the slave node when the master node crashes or the network is abnormal, the continuous playing of the client is ensured, and the reliability of audio broadcasting is improved.