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滤波器组理论是子带编码的基础，因而，滤波器组的设计非常重要。本文介绍了一种可以设计零相位滤液器组的方法，克服了以往的方法只能设计非零相位滤波器组的缺点，为利用MoClellan变换法设计二维滤波器组提供了可能。通过实验验证，利用该方法设计滤波器，可以容易地控制滤波器的性能，设计也比较简单，而且所设计的滤波器能够以较小的误差重建原始信号。可以认为，这是一种较为理想的滤波器设计方法。
Filter bank theory is the basis for subband coding, so the design of filter banks is very important. In this paper, we introduce a method to design a zero-phase filter set, which overcomes the shortcomings that only the non-zero phase filter set can be designed in the past. It is possible to design a two-dimensional filter bank using the MoClellan transform method. The experimental verification shows that the proposed method can be used to design the filter to easily control the performance of the filter. The design is relatively simple, and the designed filter can reconstruct the original signal with less error. It can be considered, this is a more ideal method of filter design.