DER THEATER VERLAG, BÜHNEN TECHNISCHE RUNDSCHAU
FROM THE DEPTHS TO THE HEIGHTS - THE NEW CONCERT HALL IN ANDERMATT, BTR 4/2019
“The early hall response is generated by the reflections from the hall's wooden surfaces, as we are convinced that natural reflections through wooden surfaces always sound better than reflections artificially created with speakers. Only the “late” hall response from the audience area is supported and expanded with the “Amadeus Active Acoustics” reverberation system from the Austrian office Rohde Acoustics. Amadeus is a regenerative acoustic system and adds additional acoustic energy for the desired event type, extending and delaying the reverberation. The signals are recorded above the stage and in the hall by 25 microphones. These signals are emitted via 75 loudspeakers that are discreetly integrated into the ceiling and walls. Without the system, the reverberation would otherwise be a little too short, as the volume of the room would remain too small for a symphony orchestra. Technically, some of the ceiling surfaces are acoustically transparent, which also enabled the ventilation to be integrated in an invisible manner. The loudspeakers are then used to simulate both a reflection on the visible surface and a reflection on the actual outside surface: acoustically, the area above and behind the balcony is enlarged, in a way that is still perceptually acceptable and understandable - the hall is “acoustically present “And the majority of the surfaces manifest themselves visually and acoustically.”
Read the full article here:
From the depths to the heights - The new concert hall in Andermatt , BtR 4/2019