公开(公告)号：US11222619B2

公开(公告)日：2022-01-11

申请号：US16150462

申请日：2018-10-03

申请人： Nexcem Inc.

发明人： Vipul Vipinchandra Acharya ,  John Paul deGraauw

IPC分类号： G10K11/168 ,  E01B19/00 ,  E01F8/00 ,  E04B1/86 ,  G10K11/165 ,  G10K11/172 ,  B32B9/04 ,  B32B19/02 ,  B32B21/02

摘要： An acoustic sound absorptive panel or block is provided that is made from a plurality of materials and volumes selected such that each discrete volume of material has a sufficiently different sound absorption profile, resulting in a system that provides better overall sound absorption of traffic noise from motorways and railways in a practical and cost-efficient manner.