A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
SOUND ABSORPTION UNIT AND SOUND ABSORPTION STRUCTURE
To provide a sound absorption unit and a sound absorption structure with a sound absorbable frequency band.SOLUTION: A sound absorption unit comprises: a first member having one or more first opening(s) for Helmholtz resonance; and a second member which is disposed above the first member, is made in a tabular shape or a sheet-like shape, has one or more second opening(s) overlapped with the one or more first opening(s) in a plan view, in which a peripheral edge(s) of the one or more second opening(s) is matched with the peripheral edge of the first opening(s) or is positioned on an outer side, and which is constituted of a porous material.SELECTED DRAWING: Figure 2
【課題】吸音可能な周波数帯域を広い吸音用ユニットおよび吸音構造体を提供する。【解決手段】吸音用ユニットは、ヘルムホルツ共鳴のための１以上の第１開口部を有する第１部材と、第１部材上に配置され、板状またはシート状をなし、平面視で前記１以上の第１開口部に重なる１以上の第２開口部を有し、平面視で前記１以上の第２開口部の周縁が前記１以上の第１開口部の周縁と一致するかまたはそれよりも外側に位置し、多孔質材で構成される第２部材と、を有する。【選択図】図２
SOUND ABSORPTION UNIT AND SOUND ABSORPTION STRUCTURE
To provide a sound absorption unit and a sound absorption structure with a sound absorbable frequency band.SOLUTION: A sound absorption unit comprises: a first member having one or more first opening(s) for Helmholtz resonance; and a second member which is disposed above the first member, is made in a tabular shape or a sheet-like shape, has one or more second opening(s) overlapped with the one or more first opening(s) in a plan view, in which a peripheral edge(s) of the one or more second opening(s) is matched with the peripheral edge of the first opening(s) or is positioned on an outer side, and which is constituted of a porous material.SELECTED DRAWING: Figure 2
【課題】吸音可能な周波数帯域を広い吸音用ユニットおよび吸音構造体を提供する。【解決手段】吸音用ユニットは、ヘルムホルツ共鳴のための１以上の第１開口部を有する第１部材と、第１部材上に配置され、板状またはシート状をなし、平面視で前記１以上の第１開口部に重なる１以上の第２開口部を有し、平面視で前記１以上の第２開口部の周縁が前記１以上の第１開口部の周縁と一致するかまたはそれよりも外側に位置し、多孔質材で構成される第２部材と、を有する。【選択図】図２
SOUND ABSORPTION UNIT AND SOUND ABSORPTION STRUCTURE
吸音用ユニットおよび吸音構造体
HONJI YOSHIKAZU (author)
2020-05-21
Patent
Electronic Resource
Japanese
| European Patent Office | 2015
SOUND ABSORPTION STRUCTURE AND SOUND ABSORPTION STRUCTURE BODY
| European Patent Office | 2019