| Popis: |
Reflective surface area near the stage of a vineyard concert hall is largely reduced when surrounded by seating terraces as opposed to by perimeter walls in a rectangular hall. Lacking of upper wall surfaces would dramatically reduce reflective energy directed back to the performer himself and to the others. The missing energy could, however, be enhanced by reflective energy from overhead, detached reflectors and other terrace walls in front of the stage. Computer simulations and scale model measurements are conducted considering tilting of side stage walls, form of the overhead reflector and height of the overhead reflector. The enhancement in both early support and reflective sound strength on stage is roughly 2.5 dB. Making the reflector surface highly diffusive causes slight drop in early support but increase in hall-averaged sound strength. |
