Abstract
Bjergsted concert hall in Stavanger, Norway, was opened in 1982 as a multi-purpose hall, but primarily intended for concerts. The hall has been rebuilt from an old dome-shaped exhibition hall. The new shape of the hall was designed using computerized sound ray tracing, in a three-dimensional mathematical model. The hall is fan-shaped and additional lateral reflections are provided by large reflectors hanging freely below the ceiling. Because of the marginal volume per seat and the hall's many light-weight constructions, we have designed, specifically for this hall, an electroacoustic multi-channel reverberation system. This increases the reverberation time over a broad frequency range and, in addition, the sound level is also increased.
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