用于现代信号分析与处理课程，正交变换、K-L变换与离散余弦变换。-For modern signal analysis and processing programs, orthogonal transform, KL transform and discrete cosine transform.

Dichotomy Methods Successive dichotomy uses a totally different approach to the problem of indexing. The constants A to F in the equation Q = A h2 + B k2 + C l2 + D kl + E hl + F hk are assigned minimum and maximum values so that for a gi