Abstract
A 3-D-simulation for improving the acoustics in a conference hall was done. This aimed at investigating the possibility of converting it for musical performance. A room modeling software, Odeon, was used to simulate the effects of adding varies reflectors on the stage with its existing demountable acoustic shell. The following cases were put into simulations: a bare stage, stage with demountable acoustic shell, and stage with acoustic shells with various hanging reflectors above the stage. The additional hanging reflectors with the existing acoustical shell reduce the reverberation time in the hall in most of the cases simulated; however, they increase the average energy levels in the hall. The acoustical shell with the reflector gives a larger energy ratio in average across the octave bands that make the hall more suitable for musical performance. [L. Y. Cheung is supported by the Hong Kong Polytechnic University.]
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