Hand in hand digital conference system ",why choose it as standard for high-end conference rooms?

Many people visit the multi-function halls of government and enterprises, and they will see gooseneck microphones arranged neatly on the desktop. They share a cable in series and orderly control their speeches. This set of equipment is often called hand-in-hand conference system in the industry. Many engineers and buyers are often confused: what is the difference between hand-in-hand system and ordinary wireless microphone? What meeting room is suitable for? What pits are there in the selection? I'll talk about it once and for all today.
1. What is a hand-in-hand conference system?
As the name implies, hand in hand = cascade series architecture. A conference host is the core, and the microphone units are connected end to end: the host → the first microphone → the second microphone → the third microphone … are connected in series in turn, just like people holding hands. The whole system consists of three cores: the conference host (central controller, audio processing+authority management), the chairman unit, which has the highest authority and silences all representative microphones with one button, and the representative unit, the participant's speech terminal.

Transmission cable carries audio signal, control signal and power supply at the same time, and the mainstream uses special aviation line or network line to transmit digital signal.

Traditional simulation scheme: each microphone is pulled back to the computer room separately, and the cables in the conference room are messy and the construction amount is large; Hand-in-hand scheme: One link connects all microphones in series, which makes the desktop clean and tidy, and greatly improves the construction efficiency.

Second, the core advantages of hand-in-hand system
1. The wiring is minimal, beautiful and easy to construct.
There is no need to wire each microphone separately. Increase the number of seats, directly add microphones at the end of the link, without laying long lines again. The transformation of large conference tables and the construction of new conference rooms are very friendly, and the desktop bid farewell to the "cable jungle".

2. Orderly speech and intelligent control (the biggest highlight)
The host supports custom conference mode: limit the number of microphones turned on at the same time (2/4) to avoid howling caused by multiple microphones turning on at the same time; First-in, first-out queuing mode, multi-person applications are automatically sorted; The chairman unit has priority authority, and all microphones can be turned off with one button in case of emergency. Thoroughly solve the problems of multiple people talking at the same time, mixed voices and chaotic scene.

3, the expansion ability is strong, and a set of systems is multi-purpose.
The high-end digital hand-in-hand system can be integrated: camera tracking (the speaker microphone is turned on, and the camera automatically locates the speaker), electronic sign-in, voting and simultaneous interpretation; At the same time, it supports docking central control, video conference terminal and audio processor to create a complete set of smart conference rooms.

4, strong stability, better anti-interference than ordinary wireless microphone.
Wired digital transmission, free from interference from WiFi and electromagnetic signals of mobile phones, without frequency interruption and battery life anxiety, is suitable for long-term important meetings, government affairs venues and bidding meeting rooms.

Third, look at the shortcomings objectively, and the selection cannot be ignored.
Linear series has a single point of failure risk. Ordinary straight chain structure: the microphone in the middle of the link is damaged, and all units in the back end cannot work. Solution: Ring backup hand-in-hand system is preferred for important venues, and the line is transmitted in two directions, and one fault does not affect the whole line.

The wired version has a fixed point and is not flexible enough. The microphone position follows the wiring of the conference table, so it is not suitable for moving tables and chairs frequently and temporarily moving the venue. Solution: The venue is flexible and can be matched with wireless hand-in-hand conference system.

4. Which scenarios are suitable for installing hand-in-hand conference system?
Board of directors of enterprises, large and medium-sized meeting rooms, meeting rooms of government agencies and institutions, school lecture halls of the National People's Congress seminar venues, bidding rooms of academic seminars, and professional venues that need to vote.

Not recommended: small temporary meeting place with frequent temporary arrangement and frequent movement of tables and chairs (wireless microphone is preferred).

Five, engineering procurement & construction pit avoidance guide
1. Distinguish between analog hand-in-hand and digital hand-in-hand: the new project gives priority to digital system, which has better noise reduction, expansibility and signal quality;
2. For important conference projects, ring backup links are preferred to avoid the risk of single-point disconnection;
3, the cable is threaded separately, and it is not co-managed with the high-voltage power line to reduce the current noise;
4. Reserve expansion space, estimate the maximum number of participants in the future, and reserve line interfaces for the host;
5. The supporting audio processor turns on echo cancellation (AEC), and there is no echo for the remote video conference.