경춘선 일반 전동열차와 ITX의 실내 소음 특성

Since opening of the double track railway for the Gyeongchun local electric train and the semi-high speed train, ITX, floating population between Seoul and Chuncheon has rapidly increased. This is attributable to the competitiveness of the railway vehicle in aspect of punctuality and safety of the operation, mass transportation and low fare. However, in terms of the interior noise, many passengers have a strong dissatisfaction, especially in tunnel sections, and displeasure according to the high interior noise rapidly increases. In this study, interior noise characteristics of Gyeongchun local electric train and ITX are analyzed and compared- Noise levels, frequency spectrum and sound quality indices are compared between the open land, tunnel and bridge. By comparing the noise levels depending on the location in the compartment, we identify the noise transmission path and provide a basic strategy to reduce the interior noise.