A Signal Processing Method of Nonstationary Stochastic Response on a Power Scale for the Actual Sound Insulation Systems (Special Section of Papers Selected from the 7th Digital Signal Processing Symymposium

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概要

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• A new trial of statistical evaluation for an output response of power linear type acoustic systems with nonstationary random input is proposed. The purpose of this study is to predict the output probability distribution function on the basis of a standard type pre-experiment in a laboratory. The statistical properties like nonstationarity, non-Gamma distribution property and various type linear and non-linear correlations of input signal are reflected in the form of differential operation with respect to distribution parameters. More concretely, the pre-experiment is carried out for a power linear acoustic system excited only by the Gamma distribution type standard random input. Considering the non-negative random property for the output response of a power linear system, the well-known statistical Laguerre expansion series type probability expression is first employed as the framework of basic probability distribution expression on the output power fluctuation. Then, the objective output probability distribution for a non-stationary case can be easily derived only by successively employing newly introduced differential operators to this basic probability distribution of statistical Laguerre expansion series type. As an application to the actual noise environment, the proposed method is employed for an evaluation problem on the stochastic response probability distribution for an acoustic sound insulation system excited by a nonstationary input noise.

• 社団法人電子情報通信学会の論文
• 1993-08-25

著者

• Ohta Mitsuo

  The Faculty Of Engineering Kinki University

• Nishimura Kiminobu

  Ube Technical College

関連論文

• A Signal Processing for Generalized Regression Analysis with Less Information Loss Based on the Observed Data with an Amplitude Limitation (Special Section on Information Theory and Its Applications)
• A Signal Processing Method of Nonstationary Stochastic Response on a Power Scale for the Actual Sound Insulation Systems (Special Section of Papers Selected from the 7th Digital Signal Processing Symymposium
• A Practical Trial of Dynamical State Estimation for Non-Gaussian Random Variable with Amplitude Limitation and Its Application to the Reverberation Time Measurement (Special Section on Information Theory and Its Applications)
• An evaluation method of L_<eq> for noise fluctuation of non-Gaussian and nonstationary types

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