FFT_G3

基于Matlab下的Simulink模块对74LS148优先编码器的仿真(Simulink under Matlab-based module 74LS148 priority encoder simulation)

本程序是功率谱密度的仿真比较,关于三个信号源的具体情况参见《现代数字信号处理导论》上册，P202，习题5。 实验方法：周期图法、自相关法和协方差法。 (this procedure is the power spectral density of the simulation, 3 signal source on the specific circumstances, see the "modern digital signal processing" Introduction to the first volume, P202, Exercise 5. Experimental Methods : Chart cycle, since the correlation and covariance method.)

先进PID控制及其MATLAB仿真（教材+相关程序），本书从 MATLAB 仿真角度系统地介绍了 PID 控制的基本理论、基本方法和应用技术，是作者多年来从事控制系统教学和科研工作的结晶，同时融入了国内外同行近年来所取得的新成果。(Advanced PID control and MATLAB)

基于牟老师的关于三层光纤的SPR反射率计算公式的图像处理部分，自己设计的，随波长变化反射率变化曲线(The formula based on Mou teacher SPR reflectance of about three fiber optic image processing section of their own design, varies with wavelength reflectance curve)

Matlab小波能量谱的程序wavelet energy spectrum (wavelet energy spectrum )

FOA修改程序，由台湾老师潘文超提出的一种群体智能算法(FOA modify the program, a swarm intelligence algorithm proposed by Taiwan teacher Pan Chao)

对眼电图、心电图以及正玄函数的图像进行峰值提取(Cross-eyed emg), electrocardiogram (ecg) and peak is xuan function image are extracted )

matlab中用于输入语音信号，特征提取，建立模型，识别判决等三部分的源码。(matlab input speech signal is used, feature extraction, modeling, identification judgments, such as the source of three parts.)

最短路这个说明倒不是说明函数的功能，只是声明一下函数中出现的问题。 shortest()函数没有问题，在secshortest中我希望只得到一条次短路（或几条roadcost()值相同的次短路），结果却出来好几条，我仔细检查了一下程序，应该没有什么问题。 因此在使用时，要得到次短路，只能用roadcost()函数分别求一下各条路的权重和，找到最小的。 有些奇怪 (short path)

EZW (Embedded Zerotrees of Wavelet Transforms) is a lossy image compression algorithm. At low bit rates (i.e. high compression ratios) most of the coefficients produced by a subband transform (such as the wavelet transform) will be zero, or very close to zero. This occurs because "real world" images tend to contain mostly low frequency information (highly correlated). However where high frequency information does occur (such as edges in the image) this is particularly important in terms of human perception of the image quality, and thus must be represented accurately in any high quality coding scheme.