Công thức nào sau đây là công thức đúng nhất mô tả tính chất trễ của biến đổi fourier A. Nếu y ( n ) = x ( n − n 0 ) Thì Y ( e j ω ) = e − j

Nếu $\text{y}\left(\text{n}\right)=\text{x}\left(\text{n}-\text{n}{}_0\right)$Thì $\text{Y}\left(\text{e}{}^{\text{j}\omega }\right)=e{}^{-j\omega n{}_0}X\left(e{}^{j\omega }\right)$

Nếu $\text{y}\left(\text{n}\right)=\text{x}\left(\text{n}-\text{n}{}_0\right)$Thì $\text{Y}\left(\text{e}{}^{\text{j}\omega }\right)=\text{j}\omega \text{n}{}_0.X\left(e\right)$

Nếu $\text{y}\left(\text{n}\right)=\text{x}\left(\text{n}-\text{n}{}_0\right)$Thì $\text{Y}\left(\text{e}{}^{\text{j}\omega }\right)=e{}^{j\omega {}_0}X\left(e{}^{j\omega }\right)$

Nếu $\text{y}\left(\text{n}\right)=\text{x}\left(\text{n}-\text{n}{}_0\right)$Thì $\text{Y}\left(\text{e}{}^{\text{j}\omega }\right)=-\text{j}\omega \text{n}{}_{0}X\left(e\right)$