Staatsoper unter den Linden

Acoustical reconstruction of the opera house „Staatsoper Berlin”
Berlin Senate Department for Urban Development and the Environment
HG Merz Architekten
HG Merz Architekten / ©Marcus Ebener / ©by alexander schippel

The reconstruction of the state opera house „Staatsoper Berlin” (1741, Georg Wenzeslaus von Knobelsdorff) includes improving the acoustics of the concert hall. First and foreground is the optimisation of the reverberation time. For this purpose the top floor ceiling will be lifted by 4.00m. This creates additional space between the upper circle and the ceiling to fit a reverberation gallery comprising reflective and sound absorbing components. To form a visual space partition a mesh of fibre reinforced phosphate-ceramics with a dimension of 250 m² will be installed in front of the wall cladding. The mesh size varies according to the parametric geometry formation from approx. 20cm side length to the surface areas without recesses at the upper edge with rod diameters of 3.5cm. A CNC 5-axes robot mills the shapes out of a dense foam. This is followed by a casting of the ceramic compound alternating with fibre layers. The multiple centre curve geometry allows for a segmental prefabrication of identical components with dimensions of 3.50m by 4.00m.
Since material behavior and mechanical properties haven’t been investigated before extensive testing series and research was necessary and conducted in collaboration with the Institute for Building Structures and Design (ITKE), University Stuttgart.