The main technologies of the conference system include not only basic microphone pickup, mixing, and desktop sound reinforcement technology, but also audio transmission technology, digital control technology, computer management technology, high fidelity reliability technology, and corresponding control and management software.

Early conference systems used analog methods for audio transmission, and the control technology was relatively simple. Although it could also meet most of the functional requirements of conference systems, due to the use of analog methods for audio transmission, there were several common problems:

1) When transmitting over long distances (exceeding 50m), the signal-to-noise ratio, channel separation, and frequency response characteristics will be affected and deteriorate, leading to a deterioration in sound quality.

2) There is significant interference caused by grounding issues in large-scale conference systems, such as lighting equipment, industrial electrical equipment, communication equipment, and broadcasting and television.

3) When using a multi-channel simultaneous interpretation system, each language requires a pair of independent transmission lines. The transmission lines for multilingual transmission are complex, with multiple connection point failures, which affects reliability.

After entering the 21st century, with the rapid development of digital technology and the continuous improvement of people's requirements for conference system sound quality, conference systems have also fully entered the digital era, and fully digital conference systems have emerged. The core technology of the fully digital conference system is multi-channel digital audio transmission technology, which uses "analog-to-digital" conversion technology to directly convert the picked up speaker's voice into digital signals. Then, the digital signals are encoded and transmitted on the cable, and corresponding multiplexing technology is adopted according to the bandwidth conditions of the transmission cable to achieve simultaneous transmission of multiple audio signals on a single cable.

The fully digital conference system fundamentally solves the problems of early conference systems such as grounding interference, equipment noise, channel crosstalk, long-distance transmission, etc. The sound fidelity is extremely high, close to CD sound quality. At the same time, a pair of twisted pair or coaxial cables can transmit multiple original and translated audio signals, avoiding the use of complex multi-core cables. This not only saves costs, but also facilitates construction wiring and enhances system reliability. In addition, as a fully digital platform, the fully digital conference system can easily achieve many value-added application functions, such as independent microphone output, independent recording of each speaker's voice, or individual decoration; Internal communication function (providing two-way communication between the chairman, attending representatives, translators, and operators); Short message function (system administrators can send short messages to all or a certain conference unit), etc. The computer control and management software of the fully digital conference system is also very powerful, including multiple functional modules such as venue design, microphone management, voting management, conference attendance, identity recognition, and personnel management.

In recent years, wireless conference discussion systems, wireless voting systems, and other wireless conference system products have emerged. System wireless technology can bring great convenience to the installation of equipment for engineering technicians and the operation of users (for example, due to the lack of device connections, certain system devices can no longer be fixed installed, so users can easily adjust system configurations according to the scale of the meeting, etc.). The main drawbacks of wireless conference systems are relatively low reliability and confidentiality. In addition, the current wireless conference system still needs to be improved in terms of performance and cost.

With the progress of society, the networking of modern conference systems is a trend in the future development of conference systems. We know that the internet can quickly transmit various types of information. In the conference system, the advantages of networking are mainly reflected in the following aspects:

1) It can achieve remote centralized control, remote detection, diagnosis, and maintenance of conference systems by engineering and technical personnel.

2) For large conference centers with multiple conference halls, information and equipment sharing can be achieved, which can greatly reduce system construction investment.

3) It can enable resource sharing between the conference system and the video conference system, allowing for online viewing of the entire conference process and even participation in the conference.