sf

Wavelet book that describe algorithms

谱元法（SEM)学习程序之二，用于对各类波场的模拟计算(Spectral element method (SEM) study of two procedures for various types of wave field simulation)

improved Neighblock wavelet thresholding method based on minimising SURE criterion

jiangshumatlab编程技巧的书籍，能够极大提升编程效率(jiangshumatlab programming skills books, can greatly enhance the efficiency of programming)

The simulation FBMC with AWGN channel

1. 给一段原始的语音信号（可以是自己录制的一段语音），加上一频率为3.8kHz的高频余弦噪声和频率为3.6kHz的高频正弦噪声（幅度自己可以选择），用窗函数设计一滤波器（要求最小阻带衰减为50dB）对加噪后的语音信号进行滤波，画出滤波器的频率响应曲线，画出滤波前后的时域图和频谱图。 需要用到的函数： fir1 用窗函数设计FIR滤波器的函数 2. 用GUI设计一界面（如图1所示）完成如下功能： 1） 输入一语音信号，画出语音信号的时域图和频谱图； 2） 对语音信号加噪处理，画出加噪后的时域图和频谱图； 3） 给定滤波器的性能指标，采用几种不同的方法设计滤波器对加噪信后进行滤波，画出各滤波器的频率响应曲线，画出滤波后的时域图和频谱图。 (1. to some of the original speech signal (which can be a voice you record yourself), plus a cosine frequency of 3.8kHz frequency noise and frequency of 3.6kHz frequency sinusoidal noise (in the range that they can choose), with a window function to design a filter (requires a minimum stop band attenuation is 50dB) after adding noise to the speech signal is filtered, the filter frequency response curve to draw, draw diagrams and time-domain spectrum before and after filtering. Need to use the function: function fir1 with window function design FIR filter design 2. Using a GUI interface (Figure 1) complete the following functions: 1) an input speech signal, the speech signal in the time domain to draw graphs and spectrum 2) adding noise to the speech signal processing, draw diagrams and time-domain plus noise spectrum after 3) to set the filter performance, using several different methods designed to filter letter after adding noise filtering, draw the frequency response curve of each )

光伏pv特性图，在2010下可以直接仿真出波形(Photovoltaic pv diagram, can direct simulation waveform under 2010)

A robust watermarking method for copyright protection of digital images using WT

[matlab]支持向量机(SVM)用于分类的算法实现([matlab] Support Vector Machine (SVM) algorithm for classification)

随机信号仿真，仿真了信号在高斯白的情况下经过低通和带通滤波器的情况。(Random signal simulation, simulation of the signal in the case of white Gaussian low-pass and band-pass through the filter of the situation.)