First , the theoretical analysis about the micro perforated absorber is present in this paper . then , the source noise of the apu of ma60 is obtained by the outside test in airport . based on the test result , a micro perforated absorber is designed and produced 論文根據(jù)微穿孔板吸聲體理論和微穿孔板消聲器的基本理論,對微穿孔板消聲器結(jié)構(gòu)參數(shù)與吸聲特性之間的相互影響進(jìn)行了深入的分析和探討;建立了一套微穿孔板吸聲結(jié)構(gòu)的設(shè)計(jì)方法。