xmas

calculator for mathematical manipulation

说明：  关于信号输入均匀量化器的信号幅度，用MATLAB实现量化过程(Uniform quantizer on the input signal amplitude, using MATLAB to quantify the process of achieving)

this is an optimization code in matlab

阿诺德算法，用于图像加密的阿诺的算法。可以直接使用matlab软件实现。(Arnold algorithms for image encryption the Arnold algorithms. Matlab software can be used directly.)

说明：  本程序介绍如何产生序列号,编译运行后,zhuceji程序为客户使用,上面一个编辑框的好吗是顾客号,供应商使用jiemishou升序(the procedures on how to have a serial number, translation operation, zhuceji procedures for customer use, an edit box above the okay customers, suppliers use jiemishou ascending)

录制自己的一段语音，时间控制在15秒到30秒左右；利用wavread函数对自己的语音进行采样，记住采样频率。 （1）画出原始语音信号的时域波形，而后以1秒为间隔，求出每秒数据的功率谱。 （2）根据语音信号特点，分别设计FIR及IIR滤波器，分别画出滤波器幅频和相频特性曲线。用设计的滤波器对信号滤波，画出滤波后时域波形。用sound函数回放语音信号。 （3）求出特征频段语音信号随时间变化的曲线（每间隔0.05秒求一次功率谱）。 (Record your own voice for some time (15 seconds to 30 seconds) use wavread function of the voice samples, remember the sampling frequency. (1) Draw the original speech signal in time domain waveform, and then to 1 second intervals, the data obtained power spectrum per second. (2) According to the voice signal characteristics, FIR and IIR filters were designed, namely to draw the amplitude and phase frequency characteristic curve. With the design of the filters on the signal filtering, to draw the filtered time-domain waveform. Playback with sound function of the speech signal. (3) Find the characteristic band speech signal curve over time (0.05 seconds intervals seeking a power spectrum.))

matlab所有函数代码一览表，按照字母排序(All functions matlab code list, in alphabetical order)

ECG signal processing

基于高频电磁散射的物理光学法用于计算散射目标的RCS (Based on high-frequency electromagnetic scattering of the physical optics method used to calculate the scattering target RCS)

Comparison of the performances of the LS and the MMSE channel estimators for a 32 sub carrier OFDM system based on the parameter of Mean square error