The problem of noise pollution occupies most open spaces of entertainment. Our company in collaboration with Outline comes to give you a permanent solution to this problem. The Outline system is installed with absolute success in many places throughout Greece. Its innovation allows us to play music at a volume of 100 db where the speakers are (on the track) and as we move away from the system the volume weakens. As a result, at a distance of 20 meters, the intensity has decreased by more than 20 db. In this way we achieve the smooth conduct of the event and the respective company to comply with the laws on noise pollution.