Influence of visual factors on noise annoyance evaluation caused by road traffic noise in indoor environment

Through laboratory experiments the variation of noise annoyance caused by road traffic noise with LAeq.20sec of 35, 45, 55 and 65dB under different visual conditions in study and living rooms was explored. The experimental result shows that in the indoor environment the influence of brightness perception on noise annoyance caused by road traffic noise was more obvious, and the effect of color perception on noise annoyance evaluation was not significant though color and brightness had an interaction effect on noise annoyance evaluation. Therefore, both improving the lighting conditions and creating a reasonable combination of color and brightness condition was helpful for the noise control in the indoor environment.