Svein Strøm
47
976 59 831
E-post : sst@cowi.no
COWI AS
Otto Nielsens vei 12
7414 Trondheim
The Grieg Memorial Hall in Bergen, 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. Even sport arrangements have used the hall. The shape of the hall was designed using 3-D sound ray tracing in a mathematical modell of the room. The design had to be unconven-tional since all the concrete constructions had been finished when this investigation started. Measurement data of pulse response, reverberation time and speech intelligibility will be presented. Musicians, conductors and audience members have reported their impressions as : "satisfactory fullness of tone and spatial impression, but at the same time a distinct sound". The most important experience from this project was that we succeeded in designing a satisfactory concert hall acoustics, using our newly developed computer technique. With these computer data we managed to convince the building committee and the architect that the redesign of the hall could give a satisfactory sound distribution.