任意不規則入力下の一・二重壁遮音システムに対する二種確率評価法

概要

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In the engineering practical field of noise control, it is as important as the sound source countermeasure to improve the sound propagation characteristics by newly setting a sound insulation system. On the other hand, the noise statistics like an L_x (x=5, 10, 50, 90, . . . ) defined as a (100-x) percentage point of the sound level distribution are very important as well as the lower order energy moment statistics like an L_<eq> in the actual noise evaluation and regulation problems. In this paper, two kinds of probabilistic evaluation method for sound insulation systems are theoretically proposed from typically different points of view for the probability distribution of the transmitted sound intensity , when a general stationary random noise having an arbitrary distribution form coefficient, a somewhat modified statistical energy analysis method has been used. The observed data on the out put response fluctuation of single and double walls type insulation systems inserted between two reverberation rooms.
社団法人日本音響学会の論文