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在数字化信号的处理过程中,改变数字信号的抽样率是经常的事。本文主要从频域来分析抽取与插值的不同次序对数字信号处理的影响。首先,我们简单介绍了抽取与插值系统。然后重点介绍抽取与插值不同次序的频域分析。根据抽取与插值的不同次序,我们分两种情况对信号基带频宽的损失进行分析。通过对比两种情况对信号基带频宽造成的损失量,使我们对抽取与插值的不同次序,对数字信号处理的影响有深入的认识。
It is not uncommon to change the sampling rate of digital signals in the processing of digitized signals. In this paper, the frequency domain analysis of the different order of extraction and interpolation of digital signal processing. First, we briefly introduced the decimation and interpolation system. Then it focuses on the frequency domain analysis of the different order of decimation and interpolation. According to the different order of extraction and interpolation, we analyze the signal baseband bandwidth loss in two cases. By comparing the two cases of signal baseband bandwidth loss caused us to draw and interpolation in different order, the impact of digital signal processing has a deep understanding.