논문집

원문다운로드
논문명 철도소음 저감설계를 위한 소음도 시뮬레이션 연구/Research on simulation in railway sound for noise control
저자명 고효인(Koh, Hyo-In)
발행사 한국건축친환경설비학회
수록사항 한국건축친환경설비학회 논문집  , Vol.9 No.2
페이지 시작페이지(101) 총페이지(6)
ISSN 1976-6483
주제분류 환경및설비
주제어 철도소음 ; 음압 시뮬레이션 ; 방음벽 Railway noise ; simulation of sound pressure ; noise barrier
요약2 In this paper, the simulation technology of sound pressures when railway vehicles passe by a microphone or a noise receiver is discussed. Sound powers are predicted using the field measurement with a microphone array system. In order to visualize and determine the sound sources, the measured sound pressure signals are processed by means of the delay-and-sum method and the transfer factors are efined using speaker tests. The sound pressure level at each time instant is the sum of the contribution from all individual sources. Each source contributes to the total sound power level at the receiver position, with an amount defined by sound power of the source,tenuation due to the directivity of the sources, attenuation due to distance between source and receiver. A simulation yields the sound ressure level as a function of time, the A-weighted equivalent sound pressure level and the reduced sound pressures due to noise barriers.
소장처 한국건축친환경설비학회