Influence of Visual Information on Apparent Source Width (Asw) for Indoor Sound Fields of Architectural Space

Abstract

The purpose of this study is to clarify the influence of visual information from space interior on Apparent Source Width for indoor sound field, and to acquire useful knowledge in architectural acoustic design. ASWs were measured when auditory stimuli which contain sound fields of different LFs and visual stimuli which consist of VR images of space interior, were presented to subjects individually or simultaneously. ASWs for auditory stimuli were observed to be changed by visual cues, and expected LF for each space was estimated.The change is assumed to be caused by supplementary effect bridging the gap from expected LF.