A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
SOUND ABSORBER STRUCTURE
To provide a sound absorber structure which prevents interference by reflection sound especially in a frequency band which a person feels discomfort while an overall thickness is kept to be thin and achieves high sound absorption effect.SOLUTION: A sound absorber structure comprises a laminate 30 including at least a first layer 10 arranged on a side near a sound source A and a second layer 20 arranged on a side farther from the sound source A. The first layer 10 is formed of a fiber material which is thicker than the second layer 20 along a sound propagation direction (direction of arrow a) and has relatively lower flow resistance than the second layer 20.SELECTED DRAWING: Figure 1
【課題】この発明は、全体の厚さを薄厚に保ちつつも、特に人が不快と感じる周波数帯において反射音による干渉を防止し、高い吸音効果を実現できる吸音材構造を提供する。【解決手段】音源Ａに近い側に配置される第１層１０と、音源Ａより遠い側に配置される第２層２０とを少なくとも有する積層体３０を具備し、第１層１０は音の伝搬方向（矢印ａ方向）に沿って第２層２０よりも厚く、かつ第２層２０よりも相対的に流れ抵抗が小さい繊維素材からなることを特徴とする。【選択図】図１
SOUND ABSORBER STRUCTURE
To provide a sound absorber structure which prevents interference by reflection sound especially in a frequency band which a person feels discomfort while an overall thickness is kept to be thin and achieves high sound absorption effect.SOLUTION: A sound absorber structure comprises a laminate 30 including at least a first layer 10 arranged on a side near a sound source A and a second layer 20 arranged on a side farther from the sound source A. The first layer 10 is formed of a fiber material which is thicker than the second layer 20 along a sound propagation direction (direction of arrow a) and has relatively lower flow resistance than the second layer 20.SELECTED DRAWING: Figure 1
【課題】この発明は、全体の厚さを薄厚に保ちつつも、特に人が不快と感じる周波数帯において反射音による干渉を防止し、高い吸音効果を実現できる吸音材構造を提供する。【解決手段】音源Ａに近い側に配置される第１層１０と、音源Ａより遠い側に配置される第２層２０とを少なくとも有する積層体３０を具備し、第１層１０は音の伝搬方向（矢印ａ方向）に沿って第２層２０よりも厚く、かつ第２層２０よりも相対的に流れ抵抗が小さい繊維素材からなることを特徴とする。【選択図】図１
SOUND ABSORBER STRUCTURE
吸音材構造
SATO DAIGO (author) / TOYOHARA TADASHI (author)
2021-09-09
Patent
Electronic Resource
Japanese
IPC:
G10K
Tonerzeugungsvorrichtungen
,
SOUND-PRODUCING DEVICES
/
B32B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
,
Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse
/
D04H
Herstellen von flächigem Textilgut, z.B. aus Fasern oder fadenförmigem Material
,
MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL
/
E01F
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
,
Zusätzliche Baumaßnahmen, wie die Ausstattung von Straßen oder die bauliche Ausbildung von Bahnsteigen, Landeplätzen für Hubschrauber, Wegweisern, Schneezäunen oder dgl.
/
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
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