Higher work frequency makes timing convergence more and more important, timing optimization becomes the main objective of the design.

时钟频率的提高，时序收敛性问题则变的越来越重要，时序的优化则成为设计的主要目标。

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In this algorithm, the digital differential filtering (DDF) is used to process the sampled signals, the timing component of signal is improved, and therefore the convergence speed is quickened.

该方法用数字差分滤波对采样信号进行处理，提高了信号中的定时分量，从而加快了算法的收敛速度。

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