【摘 要】
：
A virtual complex source approach has been developed to calculate numerically the ultrasound field generated by a rectangular planar source with high efficiency
【机 构】
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School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798“
论文部分内容阅读
A virtual complex source approach has been developed to calculate numerically the ultrasound field generated by a rectangular planar source with high efficiency. The sound field can be treated as the resultant sound pressure from a set of complex virtual sources located at a complex distance, and then by exploiting the integrability of Gaussian function, a substantial analytical reduction to single integral is derived for the second-order field of the sum-, difference-frequency and second harmonic components. The validity of this fast field scheme is confirmed by comparison of numerical results and the experimental data published previously.
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