Channel-based immersive sound system for live concert tour across seven different shaped large size venues.Challenge to Keep music element in reasonable time window.

Abstract: Surround or immersive audio system for a larger venue will face issues of miss alignment of arrival time from each direction.
2019 Japanese electro-pop, rock artist "Sakanaction" Held fully immersive live concert tour across seven large venues in Japan.
The author designed Soundsystem to achieve all music elements to maintain a reasonable time window by dividing the venue to several areas using multiple delay arrays. Due to seven venue are all different in shape and size and had limitation of suspension load, arranging loudspeaker location was quite a challenge.