The construction plan for the audio and video system of the multimedia exhibition hall aims to provide a highly integrated and efficient technical solution to meet the multimedia display needs of the exhibition hall in different scenarios. The architecture design of this system will adopt a hierarchical and modular approach to ensure good scalability, stability, and security. The system mainly consists of four parts: network architecture, audio and video processing module, user interface interaction module, and system management module.

The system architecture design of the multimedia exhibition hall audio and video system construction plan aims to build an efficient, flexible, and secure system platform, providing comprehensive multimedia display support for the exhibition hall. Through reasonable design and efficient implementation, the system can provide high-quality services in various display scenarios, meeting customers' needs for multimedia content display.

1. Hardware architecture

Multimedia playback host: As the core equipment of the exhibition hall, it is equipped with high-performance processors and memory, supports high-definition video decoding, and can easily run professional level video playback software.

Multi screen segmentation controller: It can achieve multiple video signal inputs, integrate multiple signals on one screen through segmentation and splicing techniques, and achieve richness and dynamic distribution of the image.

Video signal processor: used for amplifying, adjusting, compressing, and decoding video signals to ensure stable transmission of video signals.

Audio signal processor: divides, amplifies, filters, and processes audio signals to ensure clear sound quality and reduce noise interference.

LED large screen system: using high brightness and high-resolution projectors to achieve high-quality display of large images.

Speaker array: High fidelity speakers are used with a reasonable layout to meet the spatial sound field requirements and ensure even distribution of sound quality.

System control host: Integrated touch screen or computer interface to enable users to visually operate the audio and video system.

Uninterruptible power supply: ensures stable operation of the system even in the event of power outages or interruptions, reducing equipment failures.

2 Software Architecture

Database management system: Choose a database system with stable performance and strong scalability, such as or, for storing and managing system data.

Audio and video capture module: Implement the capture of various audio and video devices, such as cameras, microphones, etc., and support real-time preview and recording.

Play control module: Implement online playback, pause, fast forward, rewind and other functions for audio and video, supporting multiple playback interfaces and device adaptation.

Demo Hall Control System: Implement centralized control of audio and video equipment in the demo hall, such as lighting, projectors, etc., to ensure the presentation effect.

3. Selection of key technologies

Audio processing technology: Select professional audio processing software technology to optimize sound quality performance, improve system stability and reliability.

Audio and video synchronization technology: using methods such as timestamp synchronization and master-slave synchronization protocol, in order to ensure high-quality playback of audio and video, we will rely on synchronized sampling timestamps to ensure the synchronization of audio and video during playback, allowing viewers to have an immersive multimedia experience.

Wireless transmission technology: utilizing wireless transmission technologies such as wired Ethernet and 4G/5G networks to ensure smooth transmission of information between different devices. When transmitting videos between devices, wired Ethernet is preferred, while wireless transmission relies on relatively more mature protocols.

4. System functional module design

Remote control: It allows remote control system playback through the Internet or LAN to achieve multi-point control of display content.

Playlist management: Provides playlist editing function, allowing users to freely edit the playback order and program content according to their needs.

Information release: Supports various forms of information release such as text, images, videos, etc., and updates display content in real-time.

Touch screen operation: Provides a touch screen control interface, allowing users to select content and perform system operations through the touch screen.

Interactive communication: Support on-site audience to participate through intelligent interactive devices, enhancing the interactivity and fun of the exhibition.

5. Video display subsystem

Choose appropriate display equipment based on the area and viewing distance of the exhibition hall, such as LED large screen LCD TV, projector, or display screen.

Considering viewing comfort and visual effects, it is recommended to use display devices with 4K resolution or higher to ensure clear and delicate images.

According to the requirements of the displayed content, multi screen segmentation display can be designed, such as four screen, nine screen, etc., to meet the display needs of different types of information.

Configure professional multimedia control software to achieve centralized control of video display devices, including power on/off, screen switching, brightness adjustment, etc.

6. Audio processing subsystem

The audio processing subsystem is an important component of the entire multimedia display hall audio and video system, responsible for implementing functions such as audio signal acquisition, transmission, processing, and playback. This subsystem will provide a high-quality, low latency auditory experience for the exhibition hall, ensuring that the audio effects of speeches, explanations, interactions, and other aspects meet the display standards. The audio processing subsystem will collect ambient sound and the speaker's live sound through a high-definition microphone array, and accurately adjust audio parameters through customized audio processing software to optimize sound quality; This subsystem will also support wireless transmission of audio signals, intelligent switching, and other functions to ensure the coordination and consistency of audio between different areas in the exhibition hall, meeting the needs of multi-point simultaneous linkage. The system is equipped with intelligent noise reduction function, which can effectively filter background noise, make the speech content clearer, achieve the best auditory effect, and enhance the audience's immersion. The audio processing subsystem includes but is not limited to audio acquisition, processing, and wireless transmission devices. Through fully digital simulation technology, real-time audio feedback and intelligent adjustment are achieved to ensure that every detail can be clearly captured and transmitted.

7. Control management subsystem

User permission management: Establish different levels of user permissions to ensure the security of system operations and the reasonable allocation of functional permissions. System administrators can set and modify user roles to control user access to system resources.

Interactive Control: Provides an interactive control interface that allows viewers to interact with the displayed content through various interactive devices, such as touch screens, motion sensing devices, etc., enhancing the user experience.

Log recording and analysis: Detailed recording of system operations, including user operations, device operation, content playback, and other information, for future query and analysis.

Scalability: The system should have good scalability to facilitate the addition of new features and devices in the future.