fit

理想低通滤波器特性曲线绘制 频率图分析 升余弦滤波器特性曲线绘制 频谱图分析 部分响应系统滤波器特性曲线(Ideal low-pass filter frequency characteristic curve analysis drawn up cosine filter characteristic curve analysis part of the spectrum mapping system filter response curve)

小球碰撞，很有意思的一段MATLAB程序，在网上找到的，希望作者不要介意(sphere collision. it is an interesting code by matlab.)

计算了贝塞尔函数的一阶导数的零点。 更新BessDerivZerosBisect.m这些变化： 1。允许对m= 0 2。允许用户指定特定的m和k值理想。 3。允许公差输入参数 4。使用一个表的查找能为m和k的小值接近初始化 5。添加错误检查 6。计算衍生w.r.t.以X而不是w.r.t.米（虽然老方法的工作也。）(Calculates the zeros of the first derivatives of Bessel function. Updates BessDerivZerosBisect.m with these changes: 1. Allows for m = 0 2. Allow the user to specify the particular m and k values desired. 3. Allows for a tolerance input parameter 4. Uses a table look-up to get closer initializations for small values of m and k. 5. Adds error checking 6. Computes the derivative w.r.t. to x rather than w.r.t. m (although the old method works, too.))

说明：  混沌系统仿真软件，用于混沌系统的仿真；通过分析系统的参数和初始状态来观测混沌系统的运行轨迹。(Chaotic system simulation software for simulation of chaotic systems，Through the analysis of the parameters and the initial state of system to measure the trajectories of chaotic systems. )

matlab和lingo的使用简介，对初学者很有帮助，希望对大家有用(matlab and lingo of the use of profiles helpful for beginners, we want to be useful)

grain detection used to detect the kind of grain

Three phase converter circuit using thyristor switch

a good PDF file for introduction of ECG

传统信道化接收机，复信号，八通道八抽取,现代信号处理，多抽样率(Traditional channelized receiver, signal, channel eight extraction)

B样条的方阵生成图形，利用MATLAB生成B样条的源码(B spline matrix generated graphics, the use of MATLAB source code generated B-spline)