Audio System Archives - Mingcong YANG

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.

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.