为什么采样�率至�是信号�率最高�率的两倍以上才能重新恢复为原来的模拟信号? 知乎 Template




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tomski为什么采样�率至�是信号�率最高�率的两倍以上才能重新恢复为原来的模拟信号? 知乎 coloring