本程序主要实现了离散时间的傅立叶变换，具有很强的可移值性，原理简单。...

k近邻问题，我自己做的，效果有保证，还有测数据-k neighbor problem, I do, the effect is guaranteed, as well as measured data

The idea is from "The Blur Effect: Perception and Estimation with a New No-Reference Perceptual Blur Metric" Crété-Roffet F., Dolmiere T., Ladret P., Nicolas M. - GRENOBLE - 2007 In SPIE proceedings - SPIE Electronic Imaging Symposium Conf Human Vision and Electronic Imaging, É tats-Unis d Amérique (2007)-Measure the blur level of still image.

国外一大学教授讲章，附相关源程序，关于计算电磁学中的FDTD，详见内中chapter4-Abroad, a professor at the University of sermon, with the relevant source code, with regard to computational electromagnetics in the FDTD, see inside of chapter4

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vc实现mallat算法-Wavelet。mattat是很有名的算法。本程序提供了完整的示例。-vc achieve Mallat algorithm-Wavelet. Mattat is well-known algorithm. This program provides a complete example.

linkwitz滤波器简单容易实现，且通带内频率幅度变化比较平坦，相位非常接近线性相位，对音频保质处理是非常有用的，而且该数字滤波器是可以实时实现的，也就是实时改变频率，实时数字滤波。并附带了LINKWITZ数字滤波器设计原理文档。

可以用二分法来解非线性方程解方程，简单的程序代码，虽简单，但很实用-Dichotomy can be used for solving nonlinear equations equation, a simple code, though simple, but very practical

已调试过，好用，但是速度可能不是很快。适合于实验教学用。若不能使用或者正确运行，请勿责怪，因为此程序是我随便传的

Hanoi非递归源码-Hanoi non- recursive FOSS