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Multivariate Analysis of Effect of Snow Quality on Speech Intelligibility

In this study, we clarified how much the amount of snow accumulation, the amount of snowfall and the density, the major factors of snow, contribute to speech intelligibility using multivariate analysis. In order to measure the transfer characteristics of the snow, an impulse response measurement experiment was performed 13 times under different conditions outdoors in the snow. The measured transfer characteristics were convoluted with the test speech, and the Japanese intelligibility test was performed using these samples. Multiple regression analysis was performed using speech intelligibility as the objective variable and snow factor as explanatory variables, and the contribution rate to intelligibility was analyzed.