1954 年 10 巻 4 号 p. 250-254
The steady-state transmission characteristics in model rooms of various shapes were measured. The shape of the model was varied from the rectangular to the trapezoidal and the quadrangle with non-parallel walls, while maintaining the interior volume of the room constant. The experimental results obtained on the decrease of the factor F__L in the transmission characteristics of a room of trapezoidal shape agree well with the results of theoretical analysis described in the preceding paper.