騒音の評価に関する研究 : 変動騒音の知覚

概要

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According to JIS etc., the measured value of level-fluctuating noise is to be noted by the mean value, but this method does not agree with the auditory sense of men. In addition to that, there has not been enough discussion about perception of level-fluctuating noise. This paper reports and discusses the results of some experiments on perception of level-fluctuating noise. The experiments were carried out as follows. The level-fluctuating noises used in these experiments were 7 traffic noises and different kinds of 3 noises. Fifteen observers were made to listen to and evaluate the noises comparing them with a standard noise (80 dB Pink Noise) by Method of Magnitude Estimation. In comparison of the experimental results with the previous rerults about stationary sounds, the following became clear. The representative value of level-fluctuating traffic noise with 5 % range from maximum agrees with the auditory sense of men. It is assumed that other sounds such as impulse sound are almost the same as the traffic noises, but there are many points which must be clarified.
明治大学の論文