On the basis of the soft radio, this paper analyzes the sampling frequency transform for single series and the series, and compares them.

现以软件无线电的基本知识为基础，分析了单级和多级抽样频率转换，并进行了比较。

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The part of hardware refers to CPU and CPU interface circuit, motor driving circuit, voltage-frequency transform circuit, pulse power and so on.

硬件部分主要涉及CPU及其接口电路、电机驱动电路、变频取样电路、脉冲电源等。

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When we say "frequency transform" or talk about "representing frequency" we are usually talking about the Fourier transform, implemented as the DFT, or discrete Fourier transform.

当我们说“频率变换”或者说“代表频率”是我们通常所说的傅里叶变换，如离散傅里叶变换dft实现，或。

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