A. Harold Marshall
Marshall Day Associates
Dana L. Kirkegaard
Kirkegaard & Associates, 4910 Main St., Downers Grove, IL 60515
A 1:24 scale model of the occupied hall is being used to explore the feasibility of coupling additional volume to the Academy of Music in Philadelphia. Data from several schemes will be compared with respect to both listening position and source position. Model measurements are being carried out with the MIDAS test system. The model was calibrated to measurements made in the occupied hall.