경춘 전동열차의 실내 소음 특성

Recently, with the opening of the double track in the Gyeongchun electric train, the number of passengers has been dramatically increased and local market has been activated. Especially, intercity express train(ITX) makes railway transportation more competitive than other transportation ways in aspect of safety, ride comfort and punctuality. However, in case of the Gyeongchun general electric trains, many passengers complaints about the interior noise, especially noise in tunnels. In this study, interior noise characteristics of ITX and Gyeongchun general train are measured and compared. Frequency characteristics and sound quality parameters of the interior moise in tunnels, on open land and bridge are analyzed and compared under real operation. This study will provide useful information for improving the interior noise characteristics.