Based on mechanic equivalent circuit of the longitudinal ultrasonic horn, the resonance frequency and the amplitude magnification coefficient of three kinds of loaded horns are studied.

在纵振型变幅杆等效电路的基础上，研究了三类负载超声变幅杆的共振频率与放大系数。

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A method of image magnification with ENO interpolation which based on wavelet transform is presented, to enhance the coefficient of the high frequency subband.

提出了基于小波变换的ENO插值图像放大方法，对插值后的图像做小波变换，对于高频系数进行修正，经过重构保持放大图像的清晰度。

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Based on equivalent four-terminal networks of the longitudinal ultrasonic transformer, the resonant frequency equation and the amplitude magnification coefficient, with reactive load, are studied.

在负载为纯力抗的状况下，利用纵振型变幅杆等效四端网络，对频率方程和放大系数进行了研究。

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