音環境システムにおける非線形・非ガウス・非定常性を考慮した出力分布予測

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2020/11/01

タイトル(英語): Prediction of Output Probability Distribution for Sound Environment System by Considering Nonlinear, Non-Gaussian and Nonstationary Properties

著者名: 折本　寿子（県立広島大学），生田　顕（県立広島大学）

著者名(英語): Hisako Orimoto (Prefectural University of Hiroshima), Akira Ikuta (Prefectural University of Hiroshima)

キーワード: 音環境，非線形システム，非ガウス分布，非定常性　　sound environment，nonlinear system，non-Gaussian distribution，nonstationary property

要約(英語): In the actual sound environment system, a specific signal shows various types of probability distribution, and the observation data are contaminated by an external noise (e.g., background noise) of non-Gaussian distribution type. Furthermore, there potentially exist various nonlinear correlations in addition to the linear correlation between the system input and output time series. Consequently, the relationship between the system input and output cannot be represented by a simple linear model based on only the linear correlation and lower order statistics. In this paper, a complex sound environment system difficult to analyze by using usual structural method is considered. By introducing a nonlinear system model based on conditional probability distribution with various correlations between input and output signals, a prediction method of output response probability for sound environment systems is theoretically proposed in a suitable form for the system with nonlinear, non-Gaussian and nonstationary properties. The effectiveness of the proposed method is experimentally confirmed by applying it to the observed data in sound environment.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.140 No.11 （2020） 特集：電気関係学会関西連合大会

本誌掲載ページ: 1249-1256 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/140/11/140_1249/_article/-char/ja/