Acoustic design of the Tsuyama Music Cultural Hall based on the preference theory

Abstract

The city of Tsuyama is located about 100 kilometers west of Kobe. The fundamental shape of the plan and cross sections of the hall were designed by applying the theory of subjective preference [Ando, Architectural Acoustics (AIP Press/Springer-Verlag, New York, 1998)]. Special attempts made in the acoustic design of this hall are: (1) a number of columns distributed in front of the walls at the audience level and on the stage: This may keep a small value of the IACC and a certain initial time delay gap between the direct sound and the first reflection, making an increase of the subjective preference for both listeners and musicians; (2) a stage enclosure with the canopy of several triangular reflectors at adjustable height for musicians, to control the preferred delay time of the reflections in performing a certain type of music; and (3) the shape of the rear wall of the stage, to control the IACC for listeners.

An Evaluation of the Effects of Scattered Reflections in a Sound Field

“…The e!ect of the leaf-shaped #oor plan (see Figure 1) and the shape of the ceiling were studied by sound "eld simulation on a personal computer [2]. 2.…”