Results: Compared with classical methods, this method was more reasonable, rapid and accurate, because of shortening the filter time by reducing half of the number of sample.

结果：与经典方法相比较，由于减半取样，缩短了滤过时间，使本法更加合理、迅速、结果准确。

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To compensate for these shortcomings, this paper proposes a new technique based on the folded half-band filter design methods.

为了弥补上述的不足，文中提出了一种基于折叠技术的新的半带滤波器设计方法。

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