公开(公告)号：EP3951112A1

公开(公告)日：2022-02-09

申请号：EP19921769.6

申请日：2019-11-08

申请人： Nippon Environment Amenity Co., Ltd.

发明人： YATSUNAMI, Shimpei

IPC分类号： E04B1/99 ,  G10K15/00

摘要： Provided are acoustic obstruction prevention equipment for preventing acoustic obstruction by appropriately designing a surface structure of elemental surfaces that surround a space or a surface structure of an acoustic diffuser, and a design method thereof.
A plurality of elemental surfaces that form wall surfaces, a ceiling surface, or a floor surface which surround a space are provided. An angle mutually formed by the elemental surfaces is nα (n is a natural number), and acoustic obstruction is prevented by reflection between the elemental surfaces. ϕ=(1+sqrt(5))/2, α=360° ∗ 1/(1+ϕ). This technique may be used for a plurality of other elemental surfaces that form an acoustic diffuser disposed in a space. Furthermore, the acoustic diffuser may also be formed by rotating and disposing a plurality of units at the above-described angle multiple times.