Signal to Noise Ratio of the Announcement from Reinforced Sound System and Background Noise in Transportation Facility

Han-Sol Song; Jong-Kwan Ryu; Min-Gyu Jin; Chang-Ju Sung

doi:10.12972/jkiaebs.20170008

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2017 Vol.11, Issue 5 Next Page

Signal to Noise Ratio of the Announcement from Reinforced Sound System and Background Noise in Transportation Facility 교통시설에서의 스피커 안내음과 배경소음의 신호대잡음비

October 2017. pp. 355-363

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Abstract

This study investigated signal to noise ratio (S/N) of the signal sound and announcement in transportation facilities such as subway and railway station, bus-terminal and airport. The result of survey in subway station showed that 82% of participants were dissatisfied with the signal sound and announcement. Acoustical characteristic and S/N of the signal sound and announcement were also analysed after measuring the signal sound, announcement, train arriving noise and background noise in transportation facilities. In the subway station, the S/N ratios ranged from –14.4~13.8 dB and mostly were lower than 10 dB, which is suitable value for word recognition of elderly person. The S/N ratio in the railway station ranged from 0.7 to 5.7 dB, and the ratio in the bus terminal and airport was 8.4 dB and 9.2 dB, respectively. For the subway station, the S/N ratio in separated platform was 2 dB higher than that of island platform, and the ratio in platform with screen door was about 7 dB higher than that in platform without screen door.

Keywords

Transportation facility

Signal sound

Announcement

Signal to noise ratio

Subway station

키워드

교통시설

신호음

안내음

신호대잡음비

지하철역사

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Information

Publisher :Korean Institute of Architectural Sustainable Environment and Building Systems
Publisher(Ko) :한국건축친환경설비학회
Journal Title :Journal of Korean Institute of Architectural Sustainable Environment and Building Systems
Journal Title(Ko) :한국건축친환경설비학회논문집
Volume : 11
No :5
Pages :355-363
Received Date : 2017-07-18
Revised Date : 2017-09-26
Accepted Date : 2017-09-26
DOI :https://doi.org/10.12972/jkiaebs.20170008

Journal of Korean Institute of Architectural Sustainable Environment and Building Systems ISSN:1976-6483(Print) 2586-0666(Online) 한국건축친환경설비학회논문집

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