This is equivalent to requiring that the Nyquist frequency be strictly greater than the bandwidth or the signal. 一个频率正好是采样频率一半的正弦信号，通常会混叠成另一相同频率的正弦信号，但它的相位和幅度改变了。
The relation between decomposition error and sample frequency was revealed and it was also proved that increasing the sample frequency can effectively reduce the error. 研究结果揭示了分解误差和采样频率的关系，验证了提高采样频率可以有效地降低分解误差。
