As most physical signals in the nature are analog signals, the conversion from analog signals to digital signals has become the key step in the process of signal processing and analysis control.

但是自然界中大多数物理信号却是模拟信号，因此，将模拟信号转化成数字信号是进行信号处理和分析的首要前提。

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As most physical signals in the nature are analog signals, the conversion from analog signals to digital signals has become the key step in the process of signal processing and analysis control.

但是自然界中大多数物理信号却是模拟信号，因此，将模拟信号转化成数字信号是进行信号处理和分析的首要前提。

youdao