The military
parade that commemorated the 70th anniversary of victory of the Chinese war of resistance to Japanese
aggression and the world war against fascism, has ended perfectly in Tiananmen
Square Beijing. In this high-profile military parade, Chinese government
invited leaders and delegation from many countries to attend this elaborate
memorial and added an amazing chapter to the world peaceful development.
Every national
ceremony need entertainment、professional audio and video devices
application and technology support. Likewise, in this 70th
anniversary military parade, it applied various professional audio-video and
entertainment equipment, this application makes significant contribution to the
success of the military parade!
In this
memorial, there are dozens of digital infrared radiators installed in the
Tiananmen’s rostrum and parade viewing stand beneath the rostrum. More than one
thousand digital infrared simultaneous interpretation receivers were used.
How to apply the
Infrared simultaneous interpretation equipment outdoors has been a problem in
the industry. Because of the physical character of the infrared ray itself, it
was very sensitive to interference from the sun light and high-frequency light
sources. Because its wave length is short, when it meets obstacles, its ability
to diffract is poor, it only meet the demand of line-of-sight transmission.
Although infrared ray can reflect to some extent, its auxiliary effect is
limited. However, as the development of the IR technology and the application
of more supporting technical means, there has been the breakthrough that
applying the IR simultaneous interpretation equipment outdoors is feasible. In
the 70th anniversary military parade, the application of the IR
simultaneous interpretation outdoors has been one of these classic cases.
In fact, before
the application in this military parade, in this industry, GONSIN’s IR
simultaneous interpretation products have already applied outdoors. In the
independence day ceremony of Georgia, IR simultaneous
interpretation system from GONSIN had successfully applied in the outdoor
sunlight environment. During the ceremony, the IR simultaneous interpretation
system runs steadily with clear sound. The head of state 、other
important leader、worthies and the invited foreign guests
jointly attended the ceremony.
With the
changing technological development, the old cognition based on outdated technique
has been broken continually. In the 70th anniversary military
parade, the application of the IR simultaneous interpretation system has broken
the old cognition that IR products are difficult to be used in sunlight outdoor
environment. On that occasion, when it comes to the complicated wireless
environment on the scene, is it possible that we can break the cognition that
radio frequency simultaneous interpretation is not the ideal choice in the
complicated wireless environment? The brand new FS-FHSS wireless simultaneous
interpretation from GONSIN has more technical means and solution in this
aspect.
With the
changing technological development, the old cognition based on outdated technique
has been broken continually. In the 70th anniversary military
parade, the application of the IR simultaneous interpretation system has broken
the old cognition that IR products are difficult to be used in sunlight outdoor
environment. On that occasion, when it comes to the complicated wireless
environment on the scene, is it possible that we can break the cognition that
radio frequency simultaneous interpretation is not the ideal choice in the
complicated wireless environment? The brand new FS-FHSS wireless simultaneous
interpretation from GONSIN has more technical means and solution in this
aspect.
The brand new FS-FHSS( wireless digital simultaneous interpretation system
from GONSIN, is the product that GONSIN makes technological breakthrough and
innovates to update its products, with the base on the mutual DSSS wireless
digital simultaneous interpretation system. GONSIN FS-FHSS wireless digital
simultaneous interpretation adapts FS-FHSS select-and-hop technology and
wireless signal radiation precise control technology, it is a perfect solution
when it comes with the complicated wireless environment and the scene that many
radio frequency products work together.
Firs of all,
FS-FHSS( Frequency Select--Frequency Hopping Spread Spectrum) wireless digital simultaneous interpretation
adopts the select-and-hop technology. It can automatically monitor the 2.4G radio frequency source. And
then according to the monitoring, the system can distribute available frequency
point reasonably. During the operation, it adopts the reliable select-and-hop
double mechanism which avoids the interference from the same frequency
efficiently. Meanwhile, the system adopts the high-efficiency scalable lossless
audio coding technology, realizes that eight channels CD-quality audio just
occupies 2MHZ radio frequency bandwidth, which dramatically improves the
utilization rate of frequency brand source. Secondly, FS-FHSSS simultaneous
interpretation has adopted the advanced multipolarized intelligent antenna
utilizing the perpendicular decline technology, equipped with software to
analogous compute and auxiliary compensates by system power, which can
precisely control the radiation signal to the designated area, and can efficiently
reduce the interference from other wireless signal in the scene.
With the
analysis of the military parade scene
that a large number of the wireless devices have been applied, each square
applies the SennheiserEM3732/EM3732-II wireless microphone, this microphone
adopts U frequency band which would not be interfered with 2.4 G band. But
FS-FHSS wireless digital simultaneous interpretation adopts international open
2.4G band with less than 0.1 W transmitting power, which conforms with the regulations
from the National Radio Administration Bureau of Ministry of Information
Industry of PRC. FS-FHSS wireless digital simultaneous interpretation adopts
precisely controlling wireless radio signal technology which can control the
radiation signal to transmit in the designated area precisely and further
ensure that FS-FHSS simultaneous interpretation would not interfere with the
military wireless equipment in the scene.
According
to the simultaneous interpretation application area above, the parade viewing
stand just need to deploy one server, ten wireless simultaneous interpretation
access points and the corresponding receivers.
FS-FHSS
wireless digital simultaneous interpretation also allows 2.4G wireless signal
transmit at all-direction, which significantly improves the coverage of signal
and is free of interference from sunlight. It can be install with tripod
directly without any ceiling. Each area just need to be installed two WAP-30I
wireless simultaneous interpretation access points, which can meet the demand
of stable transmission on the scene. However, in order to offset the sunlight
interference and one-direction transmission, dozens of IR radiators need to be
installed in the scene to meet the transmission demand of the IR simultaneous
interpretation devices. When it comes to the installation of massive IR radiators,
the multipath signal attenuation that could disturb the receiving effect from
those IR radiators should be considered. At the same time, adjusting the
consistency of the IR radiators when they are installed, how to control the
voice delay and other installation solutions would be enormous challenges for
the technicians. It would be extremely difficult to deploy and debug.
As
we sigh for the quick-changing development of technology, what is more urgent
is that we should break the fixed mind-set formed by the long working
experience. Nothing is fixed, everything is possible.
Please visit the website for more information: http://www.gonsin.com/
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