Acoustical Properties of porous materials : Modifications of Delany-Bazley models

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概要

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• The characteristic impedance and propagation constant of porous materials are discussed from a viewpoint of physical realizability, and new regression models based on experimental data by Delany and Bazley are derived. Modifications from their original models are so made that the impedance function satisfies the positive-real property and that the propagation constant written in terms of complex variables becomes a regular function in the right half-plane. The new models are shown to be useful for the prediction of acoustical behavior of porous materials, especially in the double-layer case, even outside the frequency range of validity of the original models.

• 社団法人日本音響学会の論文
• 1990-01-00

著者

• Miki Y

  Faculty Of Engineering Takushoku University

• Miki Yasushi

  Faculty Of Engineering Takushoku University

関連論文

• Acoustical properties of porous materials : Generalizations of empirical models
• Determination of a reflecting surface by Hilbert transform method
• Acoustical Properties of porous materials : Modifications of Delany-Bazley models

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