14) 点音源の集合とみなしうる音源からの形態による騒音伝播性状の解析

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  • 14) ANALYSIS OF NOISE ATTENUATION FROM SOME TYPICAL SHAPE NOISE SOURCES THAT ARE A GATHERING OF NON-DIRECTIONAL POINT SOURCES
  • 点音源の集合とみなしうる音源からの形態による騒音伝播性状の解析
  • テン オンゲン ノ シュウゴウ ト ミナシウル オンゲン カラ ノ ケイタイ ニ ヨル ソウオン デンパ セイジョウ ノ カイセキ

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In another report, the author point out and proved that a crowded street road or a opening from diffused room, for example, radiate noise as though they are a gathering of point sources. In this report, the author analized the noise attenuation from fundamental type noise sources that are line type, circular type, infinit line type and infinit line type and infinit belt type. Then for rectangular type, approximate integral method was applied and a nomograph to calculate noise intensity was followed that would be applied to calculation of noise intensity from the spontaneous type sources. And then discussed the corelation between rectangular type to another analystic type noise sources. When the point sources which constitute a noise source has some distance each other, the integral analysis might not to be use and the author in vestgated the limit of application of integral method.

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