KTX 의자 설계에 따른 객실 Speech Privacy 평가Evaluation of Speech Privacy on the Seat-design in High-speed Train Passenger Cars
- Other Titles
- Evaluation of Speech Privacy on the Seat-design in High-speed Train Passenger Cars
- Authors
- 장형석; 김재현; 전진용
- Issue Date
- Feb-2014
- Publisher
- 한국소음진동공학회
- Keywords
- High-speed Train; Room Acoustics; Speech Privacy; Seat-design; Acoustic Comfort; High-speed Train(고속열차); Room Acoustics(실내음향); Speech Privacy(스피치프라이버시); Seat-design (의자 설계); Acoustic Comfort(음향 쾌적성)
- Citation
- 한국소음진동공학회논문집, v.24, no.2, pp.146 - 153
- Indexed
- KCI
- Journal Title
- 한국소음진동공학회논문집
- Volume
- 24
- Number
- 2
- Start Page
- 146
- End Page
- 153
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/160680
- DOI
- 10.5050/KSNVE.2013.24.2.146
- ISSN
- 1598-2785
- Abstract
- This study investigates the effects of seat-design elements such as seating arrangement, shape, and height on speech privacy in high-speed trains. For the evaluation of speech privacy, acoustic simulation software was used to reproduce room acoustical conditions in passenger cars on the basis of in-situ measurement data. The influences of speech source directivity and source height on privacy distance (rP) were investigated, and it was found that rP determined using an omni-directional source was relatively shorter than that determined using a directional source. It was also found that rP decreased when the source height was lower than the height of the seat-back because the seat-back blocked the propagation of speech from the sound source. The effect of seating arrangement was not significant when comparing the vis-a-vis seating and one-side seating arrangements. In addition, among the alternative seat-designs, the seats that block the space between the seats and cover the space near the ear were found to show significantly enhanced speech privacy in high-speed train passenger cars.
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