Abstract
The Grieg Memorial Hall in Bergen, Norway, finished in 1978, is a multi-purpose hall primarily intended for concerts. To cater for other uses, it is equipped with a large stage and constructed in such a way that it can be converted to serve for theatre, opera, ballet, shows and congresses. The orchestra enclosure is demountable and a loudspeaker system for speech reinforcement can be lowered from the ceiling just in front of the stage opening. The shape of the hall was designed using a computer program mathematical model for three-dimensional sound ray tracing. The hall being fan shaped, sufficient lateral reflections are provided by large reflecting elements hung freely below the ceiling. The resulting distribution of reflected sound energy gives the hall a fine balance between reverberance, fullness of tone and clarity. Measurements of pulse response, reverberation time and speech intelligibility tests are presented.
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