123 実用型アクティブ・ソフト・エッジ遮音壁の開発(オーガナイズドセッション : O.S.6 交通騒音/振動の制御(自動車・鉄道・航空機II))

概要

論文の詳細を見る
Research activities to apply Active Noise Control (ANC) techniques to countermeasures against road traffic noise have been carried out in Japan since around 1990. In conventional researches, however, the noise reduction effect of ANC technique against moving noise sources had not been confirmed yet in wide space behind the barrier. We are developing the ASE noise barrier in order to solve the above-mentioned issue. The fundamental principle of the ASE has been shown in previous works indicating the performance of the ASE cells, where active control was compatible with a sound absorption effect. In 1999 report, we will reveal the results of measuring the reduction effect of the ASE noise barrier prototype (40m long). Measurements were implemented for fixed noise sources and a running truck (at speeds of 40km/h and 80km/h). In this study, we plan to improve the noise reduction performance of the ASE noise barrier. Several kinds of the cross section of the ASE barrier have been considered in both BEM simulation and experiments.
一般社団法人日本機械学会の論文
2001-06-05