A study on the relationship between speed of sound image and evaluation value of moving sound image
* Presenting author
The purpose of this study is to develop a high presence sound system with a personal computer for an emergency drill simulator using a virtual reality exhibition system. Some studies have reported the systems to provide acoustical high presence, however, the method used in these studies is needed powerful computers to calculate a tremendous of processing. In order to simplify these systems, we propose the method to reduce the processing of the moving sound image. The moving sound image was given by the discrete coordinates of not-continuously sound image with the proposed method. We conducted the experiment to compare with the pairs of stimuli for the evaluation of the reality of the moving sound image. In the experiment, some moving sound source with different speed were compared to obtain the threshold number of the discrete coordinate of the moving sound image for acoustical high presence. We analysed the relationship between the evaluated value and the speed with the pair comparison method. The result showed that the evaluation of the reality depended on the speed of the sound image.