音響ホログラフィを用いた自動車加速走行時のタイヤ騒音の解析

第2報, 2次元マイクアレイ法による音源の同定

抄録

In order to analyze the tire noise emission during vehicle acceleration running, noise source detecting method with acoustical holography was applied to vehicle acceleration running condition, which was developed to constant speed running. This paper describes the effectiveness of 2-dimensional arrayed microphone method by simulated calculation and the experiments with model noise sources, and propose the new method to identify the noise source without valid information on noise source frequency, which is pure tone or broadband noise.