矩形混响室中试件吸声测量结果的检验（Ⅰ）  

A Method to Judge the Validity of Measured Absorption Coefficients of a Test Plane Specimen in a Rectangular Reverberation Room (Ⅰ)[JP

作　　者：贺加添[1] 

机构地区：[1]烟台大学建筑系

出　　处：《烟台大学学报（自然科学与工程版）》1996年第3期73-79,共7页Journal of Yantai University(Natural Science and Engineering Edition)

基　　金：国家自然科学基金

摘　　要：混响室常用来测量声波无规入射条件下试件的平均吸声系数，在实际测量时，各个混响室对同一试件的吸声系数的测量结果偏差很大，混响室之间的测量值不具有可比性．作者认为，衰变声场为一瞬态扩散声场是伊林混响公式成立的条件，传统有关“扩散”声场的定义可以作为瞬态扩散的极限；The statistical average absorption coefficients of an acousticaltest specimen are normally measured in a reverberation room. However, it appears that the measured absorption coefficients are related with the reverberation room which strongly influences the reproducibility of the results among laboratories. The author supposes that a transient diffuse sound field satisfies the demands of Eyring reverberation formulae, and the traditional diffuse sound field is the limit of the transient diffusion.

关 键 词：混响室 瞬态扩散 吸声测量 

分 类 号：TU112.22[建筑科学—建筑理论]