shiyan2

用双线性变换法设计一个IIR滤波器对心电信号进行处理(Bilinear transformation method of designing an IIR filter to process the ECG)

冈萨雷斯数字图像处理配套matlab例程，第三章。代码里面有详细解释，适合初学者同步学习。(Gonzalez digital image processing supporting Matlab routines, chap. There is a detailed explanation of the code, suitable for beginners synchronous learning.)

压缩采样仿真实验代码，基于随机解调器，仿真功能完善(Compressive sampling simulation code, based on random demodulator perfect simulation function)

数学建模清华数模讲义\model4b (Mathematical modeling Qinghua digital-analog handouts model4b)

To implement a DTMF encoder and decoder in a noisy environment.

本程序设计的是咬尾编码的turbo码，用matlab编写。咬尾turbo码也即不需要拖尾比特，使得前后两个状态相同，译码采用修正的MAP译码算法。此文件为咬尾编码的主程序，将数据流分段编码并行处理(This program is designed to encode the turbo tail biting code, written with matlab. Tail biting turbo code that is not trailing bits to make the same before and after the two states, the MAP decoding using modified decoding algorithm. This file is biting the end of the main program code, the encoded parallel data stream segment)

watermarking with informed embedding

這是一個利用butter filter 的bandstop 來濾除原始訊號中有雜訊的方法，先轉為spectrogram觀察雜訊所分步頻帶與能量，再依照要濾除的部分作bandstopa(This is a use of bandstop butter filter to filter out the noise of the original signal has a method, the first step into a spectrogram observation noise and energy of the band, then follow to filter out parts for bandstopa)

power spectral density

常用优化算法的matlab实现，如德杰斯特拉，弗洛伊德等。(Matlab optimization algorithm used to achieve, such as Dejene Stella, Freud and so on.)