In-situ acoustic impedance measurement using a free-field transfer function method

C. Nocke

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In-situ acoustic impedance measurement using a free-field transfer function method

机译：使用自由场传递函数法的现场声阻抗测量

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A novel method of measuring the normal specific acoustic impedance has been tested in laboratory experiments and applied in-situ. The impedance is used to calculate the corre-sponding absorption coefficients of the surface. The impedance deduction technique relies on measurements of the transfer function between two points in front ofth surface. The sample size required is discussd and different estimates for the area needed are compared. Under laboratory conditions the frequency range between 80 and 4000 Hz can easily be covered. Insitu measurements may meet geometrical restrictions that reduce the frequency range.

机译：在实验室实验中测试了一种测量正常比声阻抗的新方法，并在现场应用。阻抗用于计算表面的相应吸收系数。阻抗推导技术依赖于对表面前两点之间传递函数的测量。讨论了所需的样本量，并比较了所需面积的不同估计。在实验室条件下，可以轻松覆盖80到4000 Hz之间的频率范围。现场测量可能会遇到减小频率范围的几何限制。

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《Applied Acoustics》 |2000年第3期|p.253-264|共12页
作者
C. Nocke;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类声学;
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In-situ acoustic impedance measurement using a free-field transfer function method

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