介绍了用加权延时法重构多阶采样信号的原理,该方法通过对各路均匀采样信号分别加权延时来消除频率混叠,把理想滤波器放到采样流合并之后,与滤波器组重构方法相比较,减少了滤波器的使用次数,从而减小了由非理想滤波引入的误差,实现简单. This paper introduces the principle of using weighted delay method to reconstruct multi-order sampling signal. This method eliminates the frequency aliasing by weighting the time-varying samples evenly, and puts the ideal filter into the sample stream and combines it with the filter bank Compared with the reconstruction method, the number of filter usage is reduced, so the error introduced by non-ideal filtering is reduced and the implementation is simple.