A Fast Field Scheme for the Parametric Sound Radiation from Rectangular Aperture Source

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2004,（1）
• 页码范围: 110-113
• 页数: 4页
• 语种: 英文

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. 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.