Category: Audiovisual Conseil

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Audiovisual Conseil Case introduction

Case Review – WTA Finals 2019(2/2) – Audio & Video

In this finals, all audio signals and system control signals are transmitted by optical fiber network, among which audio main and backup signals are transmitted by DANTE network protocol, mainly considering the convenience and scalability of the system. The sound reinforcement system needs to cover the fixed seats of 12,737 people in the entire stadium and then increase the VIP area in the stadium. It needs to cover evenly and the sound pressure level is high enough.
In addition, the microphone uses the shure AD series, and uses the Quad-diversity function of AD to ensure the signal stability of such a large venue.

<< Case Review – WTA Finals 2019(1/2) – Lighting & Rigging

In addition to the sound reinforcement needs of the competition, this event also includes opening ceremony performances, entry of players and awards. Therefore, this system not only needs to meet the needs of the competition, but also has enough sound pressure level and dynamics to meet the performance needs. The German consultant team gave a more detailed design plan in the early stage, but due to the lack of detailed understanding of the site, we made adjustments according to the current situation of the site. 102 full-frequency speakers were used throughout the game, which were hung in 15 groups to meet the coverage of the audience area and the performance area of the competition area. 20 basses are used, and they are concentrated in the center of the field. This design helps the uniformity of the entire field and is consistent with the full-frequency sound.

Video System

The E2 Screen Management System raises the bar for real-time screen management, delivering superior picture quality, outstanding input and output density, massive scalability and durability. Supporting native 4K input and output, the system is the industry’s leading 4K screen management system that can manage refresh rates up to 60Hz, full 4:4:4 color sampling, and 12-bit processing.

The WATCHOUT control system edits, sorts and sorts the videos and pictures that need to be played in the event according to the overall event process, and can control and deploy the display server. (The content function of the backup machine is the same as that of the main machine, and it can be switched to the backup system in real time when the main machine has problems to ensure the smooth progress of the activities)

Create a perfect display screen effect for WTA events, show better visual effects, make the broadcast effect of the program smoother, and allow the audience to experience the high-quality picture effect brought by the point-to-point screen display.

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Audiovisual Conseil Case introduction

Case Review – WTA Finals 2019(1/2) – Lighting & Rigging

The “Shiseido·Shenzhen WTA Finals” is the highest-level women’s tennis event in the world. Therefore, the requirements for lighting systems and lighting are very high.

In this finals, the entire lighting system adopts the dual network protocol with MA-NET as the main and ARTNET as the supplement.
The backbone network is formed by 5 Cisco Gigabit network switches connected in a ring. The MA-NET network protocol is used to control the lamps in the field and there are three NPU network processing units to help the console perform data calculation and transmission. In order to ensure the real-time and effective data transmission The gigabit network switches on the backbone are connected by optical fibers.
In addition, in order to ensure the normal operation of lamps in specific positions, we have added 6 network decoders to transmit signals to lamps in tricky positions. Between the gigabit network switch and the network decoder, the data transmission before the MA2 console and the gigabit network switch are professional Category 6 network cables to ensure the speed and stability of data transmission.

The difficulties encountered in the construction and maintenance of on-site lighting:
A total of more than 200 electric hoists and 1,000 meters of light TRUSS beams need to be hoisted in the entire stadium. First of all, the difficulty we encountered is the position of the lower point of the TRUSS beam. The conventional points of the infield can basically meet the design requirements, but the point where the auditorium pulls the back is a point that has never been lowered since the venue was built. , the construction is difficult and the risk is extremely high. But in the end, our team overcame all kinds of difficulties and managed to solve the problem of pulling the auditorium to the back, and then the problem of replacing lamps in the maintenance phase. Because the lighting equipment in the venue has been completed, some lamps have problems that cannot be For lowering the TRUSS rack, it needs to be repaired from the big top pulley, and the maintenance is also very difficult, but in the end, these problems are solved.

In order to ensure that the illuminance and color reproduction of the lamps meet the design standards of foreign teams, we have carried out all-round maintenance on all computer lamps and moving head LED lamps and replaced all moving head computer lamps within 20 days before the entry of the project lighting equipment. Light bulbs, maintenance parts and light bulb backups equivalent to 10% of the total number of computer lights are also prepared on site. In the end, the success of the tennis event was guaranteed.

The on-site lighting equipment finally exceeded the expectations of the German consultant team and was highly recognized by the lighting team. The whole event lasted for more than 20 days. During these more than 20 days, the entire lighting system was not turned off, and the performance was extremely stable!

Case Review – WTA Finals 2019(2/2) – Audio & Video >>

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Audiovisual Conseil Case introduction

The application of AoIP system in Live Show

The performance scene adopts high-tech complex stage design, such as LED lifting module, water curtain imaging, holographic yarn, etc., and also includes various program forms such as ice and water projects. The environment of the performance venue is complex, how to use the AoIP system to deal with it easily?

With the theme of “Olympic City, Ice and Snow Invitation”, held at the Water Cube, the “four habitats stage” of water, land, air and ice staged an ice and snow fantasy show gathered by the world’s top artists. This audio-visual feast was recorded on December 18, 2016 and broadcast on Beijing TV on the evening of December 31.

In the system design, we have made a preliminary planning for the system from the early stage. and considered acoustically.

The front end of the audio system uses an almost all-digital approach. Including AES-3 and AoIP, we digitally connected everything with digital outputs to the mixer.

More and more wireless receivers use digital transmission or digital chips to process sound. If an analog audio cable is used to connect the signal from the wireless receiver to the digital mixer or interface box, it means that the digital signal inside the wireless receiver is First, it is converted into analog audio signal by D-A, and then A-D is converted into digital signal on the mixer or interface box. Such a process will not only introduce two D-A and A-D conversion noises, but also introduce analog transmission noise on the analog audio line, and the dynamic range of analog transmission is smaller than that of digital transmission, which will undoubtedly destroy the original characteristics of the sound. What you get on the mixer is not what the wireless receiver gets.