The lowered ceiling can be made by a group of custom sized Prismasonic screens. The screen’s unique mechanism is used for connecting and tensioning the air and sound transparent black ceiling fabric, exactly similarly as in the case of video screens. Also the same wall mounting brackets are used, but now they are attached to the special ceiling extension bars made of plywood. Due to semi transparent fabric, the air conditioning of the room is able to be hidden out of sight. Additionally the whole main ceiling can be covered with the wool plates to highly improve the overall room acoustic, as well as the sound proofing. The automated lighting is organized to the coloured screen frames, which are shared as one per each two screen frameworks.