STOCHASTIC EVALUATION METHOD BASED ON NON-LINEAR TIME SERIES REGRESSION MODEL BETWEEN SOUND PRESSURE LEVEL AND LOUDNESS WITH AN EXPERIMENT

摘要

The determination of the quantitative relationship between the sound pressure level and loudness for environmental noises is important from the viewpoint of noise assessment. In this study, a method for predicting the probability evaluation quantities of the noise environment is proposed by introducing nonlinear time series regression model between the sound pressure level and loudness. More specifically, based on the joint probability distribution in an orthonormal expansion series which linear and nonlinear correlation information is reflected hierarchically in each expansion coefficient, probabilistic methods for predicting the sound pressure level and the loudness are proposed. The validity of the proposed method is confirmed by applying it to the actual time series data in a sound environment.