三次元空間における能動消音に関する研究 : 音響パワー低減の推定における近似誤差

概要

論文の詳細を見る
In the previous report, the authors proposed a method for arranging noise sources and an error microphone for active acoustic power control systems. The theoretical estimations and experimental results of the acoustic power reduction were also presented. Two assumptions were made in the estimations; one was that the error signal becomes zero and the other was that the sources are small encagh to be regarded as point sources. In actual cases, however, it often occurs that those assumptions are not sufficiently satisfied. The assumptions are examined in this paper, and more precise estimations are presented. In addition, the experimental results obtained using the duct opening are discussed and compared with the theoretical estimations.
社団法人日本機械学会の論文
1996-01-25