For discrete convolution equation set, generally, people use Fourier transform method to solve. But in some positions, zero frequency will lose.

对于离散卷积方程组，一般采用傅氏变换的方法求解，但在某些特定系数的情况下，零频率丢失。

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For discrete convolution equation set, generally, people use Fourier transform method to solve. But in some positions, zero frequency will lose.

对于离散卷积方程组，一般采用傅氏变换的方法求解，但在某些特定系数的情况下，零频率丢失。

youdao