Abstract
The theory and simulation studies were developed to analyze the far-field sound field control effect of the low-frequency phased array emitting the different weight vectors. First, the relationship between the weight vector and the mean square deviation of time-delay estimation were set up theoretically. Second, using the relationship, the optimal weight vector was solved and discussed. Finally, under the same energy input conditions, the several weight vectors were used to compare the far-field sound field control effects of low-frequency phased array. From the simulating results and the mean square deviation of time-delay estimation exited by the weight vectors, it was showed and proved that the phased array emitting the No.1 normal mode was not always the optimum in the far-field sound field control.
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