ROOM ACOUSTICAL MODELLING DIFFERENCES AND THEIR CONSEQUENCES

摘要

During the detailed design phase of the Pecs Conference and Concert Centre we had the great opportunity to use two different room acoustical modelling software in parallel for the evaluation of the acoustic design. As the basis, a three dimensional architect's drawing was used what was slightly modified in order to suit each programs' needs. Due to the different calculation algorithms and modelling approaches a difference of 20 percent was experienced in the predicted average reverberation times in the lower frequency range. In this paper we present the results of investigations that were initiated by this difference. Simplified models of the hall were created and the calculations re-run, the comparison of different modelling approaches and their effects are shown in details.