2001 年 7 巻 13 号 p. 101-106
In this paper, spatial distribution of heavy floor impact sound was measured at multiple dwelling houses and a steel house. At multiple dwelling houses, there was vertical direction of natural frequency in spatial distribution of heavy floor impact sound. Actually there was natural frequency in a steel house. But there wasn't vertical direction of natural frequency in spatial distribution of heavy floor impact sound at a steel house. Standard deviation of heavy floor impact sound level was influenced with natural frequency.