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A Fast Field Scheme for the Parametric Sound Radiation from
Rectangular Aperture Source |
| YANG Jun1,2; SHA Kan1;GAN Woon-Seng1;TIAN Jing2 |
| 1School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798
2Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080
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| Cite this article: |
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YANG Jun, SHA Kan, GAN Woon-Seng et al 2004 Chin. Phys. Lett. 21 110-113 |
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Abstract 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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| Keywords:
43.25.Lj
43.35.+d
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Published: 01 January 2004
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| PACS: |
43.25.Lj
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(Parametric arrays, interaction of sound with sound, virtual sources)
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43.35.+d
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(Ultrasonics, quantum acoustics, and physical effects of sound)
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