We consider arbitrary bounded discrete time series. From its statistical feature, without any use of the Fourier transform, we find an almost periodic function which suitably characterizes the corresponding time series.

翻译：我们考虑任意有界离散时间序列。利用其统计特征，无需借助傅里叶变换，我们找到了一个能够恰当表征相应时间序列的近周期函数。