Evaluation method on acoustic environments of low-pressure based on Principal Component Analysis

摘要

The purpose of this paper was to study acoustical environment under low-pressure and asymptomatic altitude reaction. Twenty-four undergraduate students participated in the experiment, and their subjective evaluations were recorded in different conditions. This paper used PCA to reduce the dimensionality for the multiple subjective evaluation indexes in different noise level of acoustical environment, which simplified evaluation system, improved the efficiency of analysis of multiple indexes under acoustical environment, and which can further analysis on the relationship between variables.