抄録
In this paper, method of field measurement of the heavy floor impact sound level was examined. In receving room we made gride for measurement. At each point maximun sound pressure level were measured. In any receving point heavy floor impact sound level was caluculated. As a result, the changes of heavy floor impact sound level is 5dB. It is clear that measuring positions affect heavy floor impact sound level. Especially low frequnecy are influenced by fundamental frequency. L-value was scattered as compared with A-weighted maximum sound pressure level.
