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本文以活塞声源为模型,研究了声强测量的有限差分误差、近场误差及相位失配误差,揭示了在近场测量时这些误差所具有的特性,得出了一些有益的结论。
Taking the piston sound source as a model, the finite difference error, near-field error and phase mismatch error of the sound intensity measurement are studied. The properties of these errors in near-field measurement are revealed. Some useful conclusions are obtained.