変動域を考慮した等価騒音相音レベルLeqの一推定法

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概要

• 論文の詳細を見る

• The noise evaluation index, L_<eq>, plays an important role in the field of noise evaluation and regulation problems. For the measurement of L_<eq>, it is very convenient to utilize the statistical information on the noise level fluctuation. The well-known evaluation method using the above statistical information was derived under the assumption of a standard Gaussian distribution with the infinite fluctuation range. In an actual noise level fluctuation, however, the fluctuation range is necessarily restricted to some finite value. In this paper, a practical method for evaluating L_<eq> using lower order statistics is proposed by considering matching to above restricted fluctuation range. More specifically, an evaluation method of Leq is derived by the introduction of the Beta distribution matched to the fundamental information on the existence of this finite fluctuation. The effectiveness of the proposed evaluation method is experimentally confirmed by applying it to actual road traffic noise data. Namely, it is shown that the results estimated using the proposed method are in good agreement with the experimental results, compared with the agreement obtained with the results estimated using the usual method derived under the assumption of a standard Gaussian distribution.

• 福山大学の論文

著者

• 三谷 康夫

  福山大学工学部電子・電気工学科

• 三谷 康夫

  Department of Electronic and Electrical Engineering, Fukuyama University

関連論文

• レベル統計量に基づく騒音評価量(Leq)の簡単且実用的な推定手法
• A Simplified Prediction Method for Environmental Noises Using Neural Network Model
• 変動域を考慮した等価騒音相音レベルLeqの一推定法

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