Subjective response to environmental noise in park and annoying threshold

In this paper,we get the probability of annoyance under each central sound level, dealing with all the information of subjective responses to the environmental noise in the park by principle of fuzzy mathematics. Also we get the annoying threshold of the environmental noise in different districts of the park:63. 3dBA in grassy area, 63.6dBA in enjoyable area and is 70. 9dBA tea room and restaurant. The method of getting annoying threshold in this paper is more reasonable than the method of psychical and physical calculation.