The start of the commemoration of Telefónica's centenary was a concert by pianist Lang Lang at the Liceu last Monday. On the same day that the 2024 edition of the Mobile World Congress began, the performance became a unique show in which drones and holograms participated, with a digital twin of the artist and his piano.
At a certain moment during the performance, a digital twin of him and a holographic piano appeared on stage with the pianist. They both performed the music at the same time, or so it seemed to the 1,200 guests who attended the gala.
To get the hologram to “perform” at the same time as the brilliant pianist, several cameras were used that filmed it live and in detail from various angles. The images were recorded in 4K format and transmitted at high speed so that the holographic projection had a very low latency and appeared to be perfectly synchronized.
A private 100 MHz Ericsson 5G network from Telefónica's mid-band spectrum was used to put on the show. The result was that the difference between any movement of Lang Lang and his holographic twin was less than 10 milliseconds and no image fluctuations occurred. The difference between one and the other was imperceptible to the human eye.
During Mobile World Congress, companies try to demonstrate the best use cases for technologies like 5G. The one at the Liceu was one of the most spectacular and elegant examples without the public having to be aware of all the technology behind it. High-speed video data packet transmissions and connections with almost no latency already enable these wonders.
