基于声压法的半混响声场反射声修正值计算及试验验证  

Calculation and experimental verification of reflection sound corrected value in semi-reverberation sound field base on sound pressure method

作　　者：赵虹宇[1] 代元军[1,2] 汪建文[1,3] 孙晓颖[1] 吴伟民[1] 

机构地区：[1]内蒙古工业大学能源与动力工程学院,内蒙古呼和浩特010051 [2]新疆工程学院,新疆乌鲁木齐830091 [3]内蒙古风能太阳能利用技术省部共建教育部重点实验室,内蒙古呼和浩特010051

出　　处：《可再生能源》2012年第6期40-43,共4页Renewable Energy Resources

基　　金：国家自然科学基金项目(50566001);教育部博士点专项科研基金项目(20091514110001)

摘　　要：推导出半混响声场反射声修正值公式,对反射声修正值公式进行试验验证。首先,利用声压级计算公式推导出反射声修正值公式;然后利用该公式计算出测点位置的反射声修正值;最后在半消声室与风洞实验室布置相同测点,测定反射声值,将它们做差处理,得到反射声的试验修正值。结果表明,反射声的计算修正值与反射声的试验修正值基本一致,说明反射声修正值公式适用于该风洞实验室,验证计算结果正确,为以后在风洞实验室进行声学试验提供了反射声修正值计算的理论依据。In this paper, a reflection sound correction formula in semi-reverberation sound field was reasoned out, and then it was tested and verified. First,a reflection sound correction formula was obtained through SPL formula. Furthermore,the reflection sound correction of measuring point was calculated according to this correction formula. Finally, a reflection sound experiment correction was gotten from the difference between one measured value, which was acquired in semi-anechoic chamber, and another measured value, which was acquired in wind tunnel laboratory at the same place. The comparison results show： reflection sound calculated correction and reflection sound experiment correction are well matched, and the correction formula is able to be applied to wind tunnel laboratory. It provides a theory basis for acoustic experiment to calculate reflection sound correction in wind tunnel laboratory.

关 键 词：声压法 反射声修正公式 半消声室 

分 类 号：TK89[动力工程及工程热物理—流体机械及工程] X121[环境科学与工程—环境科学]