$$\begin{array}{l}\begin{array}{cc}{乙}_{pq}={\alpha }_p{\alpha }_q{\displaystyle \underset{米=0}{\overset{\mathrm{中号}-1}{\Sigma }}}{\displaystyle \underset{ñ=0}{\overset{ñ-1}{\Sigma }}{\mathrm{一个}}_{米ñ}\mathrm{COS}\frac{\pi （2米+1）p}{2\mathrm{中号}}\mathrm{COS}\frac{\pi （2ñ+1）q}{2ñ}，}& \begin{array}{l}0\le p\le \mathrm{中号}-1\\ 0\le q\le ñ-1\end{array}\end{array}\\ \\ \begin{array}{cccc}{\alpha }_p=\{\begin{array}{l}1/\sqrt{\mathrm{中号}}，\\ \sqrt{2/\mathrm{中号}}，\end{array}& \begin{array}{l}p=0\\ 1\le p\le \mathrm{中号}-1\end{array}& {\alpha }_q=\{\begin{array}{l}1/\sqrt{ñ}，\\ \sqrt{2/ñ}，\end{array}& \begin{array}{l}q=0\\ 1\le q\le ñ-1\end{array}\end{array}\end{array}$$

$$\begin{array}{l}\begin{array}{cc}{\mathrm{一个}}_{米ñ}={\displaystyle \underset{p=0}{\overset{\mathrm{中号}-1}{\Sigma }}}{\displaystyle \underset{q=0}{\overset{ñ-1}{\Sigma }}{\alpha }_p{\alpha }_q{乙}_{pq}\mathrm{COS}\frac{\pi （2米+1）p}{2\mathrm{中号}}\mathrm{COS}\frac{\pi （2ñ+1）q}{2ñ}，}& \begin{array}{l}0\le 米\le \mathrm{中号}-1\\ 0\le ñ\le ñ-1\end{array}\end{array}\\ \\ \begin{array}{cccc}{\alpha }_p=\{\begin{array}{l}1/\sqrt{\mathrm{中号}}，\\ \sqrt{2/\mathrm{中号}}，\end{array}& \begin{array}{l}p=0\\ 1\le p\le \mathrm{中号}-1\end{array}& {\alpha }_q=\{\begin{array}{l}1/\sqrt{ñ}，\\ \sqrt{2/ñ}，\end{array}& \begin{array}{l}q=0\\ 1\le q\le ñ-1\end{array}\end{array}\end{array}$$

$${\alpha }_p{\alpha }_q\mathrm{COS}\frac{\pi （2米+1）p}{2\mathrm{中号}}\mathrm{COS}\frac{\pi （2ñ+1）q}{2ñ}，\begin{array}{c}0\le p\le \mathrm{中号}-1\\ 0\le q\le ñ-1\end{array}$$

$$\begin{array}{ccc}{Ť}_{pq}=\{\begin{array}{l}\frac{1}{\sqrt{\mathrm{中号}}}\\ \sqrt{\frac{2}{\mathrm{中号}}}\mathrm{COS}\frac{\pi （2q+1）p}{2\mathrm{中号}}\end{array}& \begin{array}{l}p=0，\\ \\ 1\le p\le \mathrm{中号}-1，\end{array}& \begin{array}{l}0\le q\le \mathrm{中号}-1\\ \\ 0\le q\le \mathrm{中号}-1\end{array}\end{array}$$