From May 14th to 15th, Belt and Road Forum for International Cooperation has been held in Beijing, which is the largest and highest-rank International conference in the framework of One Belt and One Road initiatived by China. 1500 delegates from more than 130 countries and 70 international organisations, including 29 heads of state or government, has attended the forum and reched more than 270 agreements .
AV industry contributes to the forum
During the two-day forum, delegates have exchanged their views, reached board consensus, passed joint declaration. Behind the success of forum, there are contributions from various professional AV factories.
On the night fo May 14th, President Xi Jinping and guests and foreign delegations have presented the banquet in Great Hall of the People and watched the cultural performance in National Grand Theater of China.
There are more than 100 languages in countries along with the Beld and Road. In the banquest, we found out 18 languges in the simultaneous interpretation system.
When Prexident Xi gave keynote speech, guests could selected different frequence band by the simultaneous interpretation receiver to listen the corresponding interpretation. From this point, the performance of the simultanoue interpretation equipment is especially important.
However, it is a little wired to find out the scene above.
Why didi the guest in above picture hold his receiver high? Certainly, they were not about to advertise the simultaneous interpretation system. The reason that they hold he receivers high is they want to receive the signal better. It is not hard to find out that what they used is a kind a IR simultaneous interpretation system. IR signal was blocked, the receivers could not received the signal smoothly, that might cause noise and breezing sound. As a result, delegates need to hold the reciver high to better receive signal.
As we all know, the IR simultaneous interpretation system could transmit multiple audio signal by infrared ray. The signal transmission of IR system is by the strength or the on-off of infrared ray. Infrared ray is sensitive to sunlight, high-frequency light source, because of its short wave length short, the weak diffractivity to obstacles, straight line transmission, limited reflect capability, it is mostly applied in the indoor small or medium conference. If IR simultaneous interpretation system is used in large scale venue like Belt&Road banquet, it requires many IR radiators installed to ensure full signal coverage. However, becase of high-intensity lights and participants, soft-mounted interior decoration, there are various obstacles for IR signal tranmission and high signal attenuation.
According to the unofficial statistics, there were at least 12 IR raditors installed in the banquet hall. Mass equipment stands not only increase the project budget and installation difficultity, but also cause aesthetics effect and obstacle on the entry corridor. When head of states and other important guests entered the banquet venue, they need to avoid the IR raditor stand. All above was caused by the limited effective transmission distance of IR simultaneous interpretation system.
From the perspective of weclome banquet, IR simultaneous interpretation worked. In another ways, purchasing more effective, more convenient, more reasonable solution is the common goad for evary AV professionals. Is there any more reasonable technical solution?
The mainstream technology of simulaneous interpretation system can be divided into IR and RF. Aimed to the scene above, RF simultaneous interpretation system can solve mulitple problems easily. When it comes to RF technology, FS-FHSS( frequency selecting- frequency hopping spread spectrum) technology launched by GONSIN is the best RF technology.
Take this welcome banquet as a example, if it use FS-FHSS simultaneous interpretation system, it would just require one wireless access point. User can adjust wireless access point to cover the whole conference venue, which makes pre-sale solution design, on-site installation and debugging, after-sale maintenance.
For wireless products, effective communication distance is a key indicator. FS-FHSS simultaneous interpretation system can realize 50-500m signal coverage. The customized version can realize up to 2,000m signal coverage, which can meet the demand of supre large-scale conference with thousands of pariticpants. By contrast, nowadays, IR simultaneous interpretation system just realizes 30-100m signal coverage.
What is more, when it comes to confidetiality, someone may mentions that because the RF transmission has high penetrability and all-direction signal transmission, it is hard to ensure data security. However, to fully encrypt data, besides the basic physic methods, depends on the coding and decoding technique of data transmision and data encryption technique. GONSIN FS-FHSS simultaneous interpretation system utilizes GONSIN unique coding and decoding technique and 128-digit AES encryption and grouping technique, to ensure data security.
After the data security problem, people might wonder how about the anti-interference ability. Nowadays, there are many wireless devices, all occupy wireless resources. How to avoid interference to ensure stable communication? GONSIN has developed the unique FS-FHSS technology based on widely used frequency hopping communication technology which allows the system to monitor the frequency spectrum in the conference venue, and select the clean frequency brand. When the wireless signal changed, FS-FHSS interpretation system can avoid the interference by hopping frequency. Frequency selectiing and hopping double mechanism can ensure the stable communication.
One belt and one road initative has raised new demand for China to deepen the reform, and provided new stage for Chinese economic development. Under this background, there are more opportunities for AV industry.
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