Calculating-Leap-Year

this software help you enjoy the music easy

说明：  观察数据长度N的变化对DTFT分辨率的影响 这几个程序是老师写的 对于理解DTFT有很大帮助(Effect of observation data length N on DTFT resolution These programs are written by the teacher and are very helpful for understanding DTFT.)

这是在matlab编辑环境下开发的关于“图形处理”的实用程序。(This is developed under matlab editing environment on the " graphics processing" utility.)

A motion picture presents a continues phenomena as a sequence of frames. We perceive continuity by "filling in the gaps" and "smoothing out " the missing information. While faster motion requires more frames during a given time period, there is a point where more frames per second yield no further improvement. The "sampling speed" must be fast enough to allow "appropriate averaging of dead times between frames", but need not accommodate motion too fast to be seen by a human. The above description is somewhat analogous to sampling of audio signals. The sampling rate depends on how fast the signals vary (the highest frequency we hear). Nyquist showed that sampling frequency exceeding twice the audio bandwidth is sufficient to include all the signal information, preserving the finest details up to half the sampling rate

this code parsing xml tree by reading it and convert it to the matlab format, so we can use a xml document in matlab like an array or struct.

Examples of butterworth bilineal transforamtion

复化的Gauss-legendre公式，自己写的，还有推导过程(Re-oriented Gauss-legendre formula, wrote it myself, as well as derivation)

常用matlab数据运算的程序和集，是学习matlab 与数学的不错源码(Commonly used Matlab data operation of the program and set a good source to learn matlab with math)

car suspension 4-D.O.F

在matlab中将三维坐标转换成经纬度坐标或将经纬度坐标变成三维坐标(Matlab will be at three-dimensional coordinates into latitude and longitude coordinates or latitude and longitude coordinates into a three-dimensional coordinates)