離散的数値計算法による音響放射率測定法の実験検討

概要

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In the preceding paper the discrete numerical calculation method of sound radiation efficiency has been newly presented and that utility was confirmed. This method is utilized as not only a calculation method but also a measurement method of sound radiation. This is a hybrid method consisting of a measurement of vibration and a calculation of both self- and mutual-radiation impedance. In the present paper, application properties and accuracy of this method are concretely certified in an experiment on sound radiation. As results of the work, the followings are revealed. 1) The discrete numerical calculation method has a lot of merits that a conventional method doesn't possess. 2) The length of imaginary divided part, that is, a space of measurement points, is enough to be half of the bending wave-length at the coincidence frequency.
社団法人日本建築学会の論文
1999-02-28