ON THE LINEAR ACOUSTIC RESISTANCE OF AN ORIFICE IN AN INFINITE THIN PLATE
关于无限薄平板中圆孔的线性声阻

In this paper, a theory is presented for the linear acoustic resistance of an orifice in an infinite thin plate. For high frequency and/or great orifice, an approximating formula is derived, while the limiting value is obtained in opposite case. Theoretical calculations are in consistency with experimental data. Finally, an approximating formula which is applicable for the whole frequency range is given.