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PARAMETRIC WAVEFORMS AND SPECTRA OF THE PRIMARY PULSES WITH TWO KINDS OF ENVELOPES |
| QIAN Zuwen;SHAO Daoyuan |
| Institute of Acoustics, Academia Sinica, Beijing |
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| Cite this article: |
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QIAN Zuwen, SHAO Daoyuan 1986 Chin. Phys. Lett. 3 417-420 |
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Abstract The integral of the pulse self-demodulation in acoustic parametric array can be calculated in light of the Fourier convolution theorem. Instead of a rectangular pulse with two discontinuous edges, two kinds of primary envelopes are used, the waveforms and their spectra are investigated. An optimal ratio of the primary duration has been found theoretically. Experimental results support this theory.
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Published: 01 September 1986
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