Flexible Design of Digital Conference System

As a key component of conference hall sound reinforcement equipment, the selection and configuration of digital conference systems directly affect the performance of the conference site. For current users, the first thing to come into contact with and frequently use is the digital conference system. As for the quality of the speaker, it can be difficult for non-professionals or non-audio enthusiasts to distinguish. Therefore, the configuration of the digital conference system is one of the key factors for the entire conference system when used for meetings. Here is a brief analysis of the configuration of the digital conference system to provide a reference for users or friends who will be involved in conference system engineering.

There are three common ways to configure the current digital conference system:

1. Digital conference system+ mixer;
2. Digital conference system+ digital media matrix;
3. Daisy-chain digital conference system.

A simple comparison of the application scenarios and advantages and disadvantages of these three configuration methods is provided for practical engineering configuration to be based on the functional needs of the site.

Digital conference system + mixer

This is mainly used in situations where sound quality is high. It has the advantage of better sound restoration, but the number of digital conference systems should not be too many, usually around 150 square meters, and it is best to configure with four digital conference systems, taking into account the on-site sound environment and the placement of the digital conference system and speakers. If the number of digital conference systems increases, howling is inevitable. If it is solved through processing equipment, not only will the sound quality be sacrificed, but also the sound amplification cannot be increased. Therefore, the advantage of this configuration method turns into a disadvantage. Secondly, if this configuration method is used with a processor to eliminate howling, the overall cost will increase, and the cost-effectiveness is not as good as the other two methods. Furthermore, as a traditional digital conference system, its functions cannot be extended, such as intelligent management of the conference, camera tracking, simultaneous interpretation and other functions. This method is still practical, mainly used in lecture halls, training rooms, and other places.

Digital conference system + digital media matrix

digital conference system + digital media matrix is mainly used in places where the number of digital conference systems is large (more than four) and the engineering cost is not too high, or where the number of digital conference systems is large (more than four) and the engineering cost is high. Its advantage is that howling, to a certain extent, is suppressed, and the digital conference system can be intelligently managed to some extent. Camera tracking function can be achieved through central control or camera tracking processing. However, the disadvantages are also obvious. First, each digital conference system needs one digital conference system line. The more digital conference systems, the more lines need to be installed. The construction and commissioning workload is large. Secondly, although the sound amplification has been improved to some extent, the shared effect of ten or more digital conference systems is still not ideal. Thirdly, although the intelligent management of the conference site has been realized, the need to expand other functional requirements of the conference site still requires other functional devices to achieve, and the cost-effectiveness is not as good.

This method is mainly used in video conferences with small numbers of participants, audio and video signals that need to be recorded, small meeting rooms, larger interactive training rooms, and reception halls.

Daisy-chain digital conference system

This is mainly used in small-scale meetings with a small number of conference systems to large-scale meetings with thousands of conference systems. It can realize single-language and multi-language speech and can effectively manage the conference through hardware or management software settings. It can also expand sign-in, voting, and embedded installation functions. Its advantages are that it can meet the comprehensive functional needs of the conference and ensure effective control of the conference's effect. The wiring is convenient, and a dedicated digital conference system line can connect dozens of digital conference systems. The control method is flexible, and the extensibility is strong. It is cost-effective, although the sound quality of a single digital conference system is not as good as other methods, the overall effect is better when used with the same number of digital conference systems. This method has been widely used in various types of conference venues and has become the mainstream configuration for conference speech.