All of the materials were selected to provide optimum reverberation characteristics for symphonic music.
Reverberation is defined as the persistence of sound in a room after the sound source has stopped.
An essential acoustical feature of a great concert hall is proper diffusion of sound. Diffusion promotes the uniformity of sound throughout the hall and, in addition, it beneficially influences the manner in which sound dies away in the hall. Site- Orchestra Hall is constructed on the site of the former Lyceum Theater, where the Minnesota Orchestra performed from 1905 to 1930. Two terra cotta lyres from the original building have been placed on the box office wall. Placed at a ten-degree angle on the block, the rectangular shape of the inner building is in the tradition of many famous European concert halls.