A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
NOISE REDUCTION STRUCTURE
To provide a noise reduction structure which offers a greater noise reduction effect in a wider frequency range.SOLUTION: A noise reduction structure is provided, having a sound reduction device 1 provided in or near an opening or air path of a building. As the sound reduction device 1, a resonator with a slit opening and sound absorbers 4 having a porous material therein are juxtaposed in a depth direction of the opening. Multiple resonators having different resonant frequencies of 500 Hz or lower are provided in such a way that resonators with higher resonant frequencies among the multiple resonators are juxtaposed next to the sound absorber 4.SELECTED DRAWING: Figure 1
【課題】より広い周波数域において騒音低減効果が大きくなる騒音低減構造を提供する。【解決手段】建造物の開口部又は風路、その近傍に減音装置１を設けてある騒音低減構造であって、減音装置１としてスリット状開口部を有する共鳴器と多孔質材内蔵の吸音器４とを、開口部の奥行方向に並設すると共に、共鳴器として共鳴周波数が５００Ｈｚ以下で、共鳴周波数が異なった物を複数設け、複数の共鳴器の内で共鳴周波数が大きい物を、吸音器４に隣接して並設してある騒音低減構造。【選択図】図１
NOISE REDUCTION STRUCTURE
To provide a noise reduction structure which offers a greater noise reduction effect in a wider frequency range.SOLUTION: A noise reduction structure is provided, having a sound reduction device 1 provided in or near an opening or air path of a building. As the sound reduction device 1, a resonator with a slit opening and sound absorbers 4 having a porous material therein are juxtaposed in a depth direction of the opening. Multiple resonators having different resonant frequencies of 500 Hz or lower are provided in such a way that resonators with higher resonant frequencies among the multiple resonators are juxtaposed next to the sound absorber 4.SELECTED DRAWING: Figure 1
【課題】より広い周波数域において騒音低減効果が大きくなる騒音低減構造を提供する。【解決手段】建造物の開口部又は風路、その近傍に減音装置１を設けてある騒音低減構造であって、減音装置１としてスリット状開口部を有する共鳴器と多孔質材内蔵の吸音器４とを、開口部の奥行方向に並設すると共に、共鳴器として共鳴周波数が５００Ｈｚ以下で、共鳴周波数が異なった物を複数設け、複数の共鳴器の内で共鳴周波数が大きい物を、吸音器４に隣接して並設してある騒音低減構造。【選択図】図１
NOISE REDUCTION STRUCTURE
騒音低減構造
OKAMOTO TAKEHISA (author) / KIYAMA MASAKAZU (author) / KIMOTO SHOGO (author) / MASUDA TAKASHI (author)
2023-11-02
Patent
Electronic Resource
Japanese