The effect of anomalous transparency on the passage of sound from water to air is considered. A mathematical model is used to calculate the coefficient of pressure transmission through the water–air interface taking into account the influence of inhomogeneous plane waves. The features of the acoustic field in air are shown for an underwater source located at a distance from the media interface smaller than the wavelength. The theoretical dependences of the pressure transmission coefficient on the wave distance from the source to the interface are given. The conditions and methods for measuring the coefficient of transmission of spherical waves through a planar interface are described. The experimental dependences of the pressure transmission coefficient on the radiation frequency and depth of the source are presented. Oscillograms of acoustic signals transmitted from water to air are shown.

中文翻译：

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水-空气界面异常透明效应的分析

考虑了透明度异常对声音从水到空气的传递的影响。考虑到非均匀平面波的影响，使用数学模型来计算通过水-空气界面的压力传递系数。示出了水下声源在空气中的声场的特征，该水下声源距媒体界面的距离小于波长。给出了压力传输系数对从声源到界面的波距的理论依赖性。描述了测量球面波通过平面界面的传输系数的条件和方法。提出了压力传输系数对辐射频率和辐射源深度的实验依赖性。