一重壁遮音システムの特性改善に対する機能的一評価法 : SEA法と最小2乗規範に基づく同定と分布予測

概要

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Recently, for the purpose of reducing a living environmental noise, many sound insulation systems are very often improved acoustically by changing their geometrical scales and/or acoustic characteristics. In this paper, new identification and probabilistic prediction methods for these insulation systems are theoretically proposed in a practical expression form under introducing a few functional parameters supported by many of physically structual factors, in close relation to the well-known statistical energy analysis method, especially when the sound characteristic is changed by the above improvement work. Further, these functional parameters introduced only for the prediction are easily estimated in the preliminary experiment by use of the well-known least-squares type error criterion, under the coexistence of a background noise. Finally, the effectiveness of the proposed prediction method has been experimentally confirmed too by applying it to the actually observed data on a single-wall type sound insulation system.
社団法人日本音響学会の論文
1985-03-01