Aiming at these problems, this paper presents an efficient algorithm which use all zero digital filter for filtering the periodic component.

针对这两方面的问题，提出了一种用全零点数字滤波器滤除周期性分量的滤波算法。

youdao

This paper discusses an all digital phase-locked loop with a zero-crossing detector and a loop filter.

本文讨论的全数字锁相环包括过零检测器和环路滤波器。

youdao