1khz的正弦波用2khz脉冲去抽样,经2khz恢复滤波器会输出一个2khz的正弦波吗,为什么? 知乎 Template




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tomski1khz的正弦波用2khz脉冲去抽样,经2khz恢复滤波器会输出一个2khz的正弦波吗,为什么? 知乎 coloring