Analogue simulation of the active noise control source location in highway tunnel
WEI Qingchao
ZHANG Xuefeng
ZANG Chuanzhen
NI Yongjun
HU Bingyi
Abstract：The active noise reduction feature of highway tunnel is analyzed theoretically based on the principle of acoustic interference.The models of three full-sized tunnels are established based on finite element method (FEM).The distributions of sound pressure level are calculated,and the characteristics of sound field in tunnels are analyzed during active noise cancellation.The results show that the lower the noise frequency is,the better the effect of active noise control is when adding the spatial distance between the active noise control device and the noise source to the spatial distance between the active noise control device and the noise reduction position,getting a sum,then comparing the sum and the spatial distance between the noise source and the noise reduction position,there is a conclusion that if the difference value is the integral multiples of noise wavelength,noise reduction of more than 3dB can be achieved nearby the noise reduction area.
Keywords：highway tunnelactive noise controlFEMsound pressure leveloptimal location
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 17-22 )