Evaluation of noise characteristics of elevators in apartment houses

The noise of elevator in apartments inhibits the comfortable and quite sounds of residents. Many residents who are suffered from discomfort can't sleep or use the noisy room as a warehouse or even consider moving out. In this study, we tried to closely grasp the characteristics of the elevator noise transmitted to inside of the apartment house. In fact, we conducted field measurements in total 8 households of elevator noise complaints subject 2 households and apartment house reconstruction site 6 households. All 8 households are adjacent to the elevator hoist way. The adjacent room consists of a bedroom and a living room. As a result of measurement, it showed a low value of less than 35dB(A) equivalent noise level between operating section. For the maximum value, it showed 40dB(A) level. The results of the frequency analysis between 0.1 seconds representing the maximum value showed that the influence is high in the 31.5 Hz, 50 Hz, and 250 Hz bands. It showed that there is no influence in the above 500Hz band.