freqres

主要介绍基于dct的数字音频水印，以及水印的嵌入和水印的提取(Introduced digital audio watermarking based on dct, and the watermark embedding and watermark extraction)

把训练数据拷入，load的*.m文件中, 文件中部load的*.m为测试数据 save 存盘的文件为测试数据的bp预测值, 该程序可以扩充n个输入,n个输出,很容易(it is copyed into the training data, load the document*. m, Central to the paper load*. m to save Inventory test data for the paper test data bp predictive value, The procedure can be expanded to import n, n output, it is easy)

说明：  采用正交投影生成子空间算法来进行最大似然估计，程序已经运行出结果。可以放心使用(Orthogonal subspace projection algorithm for generating maximum likelihood estimates, the program has run out of results. Safe to use)

基于PCA和白化的数据预处理操作，PCA具有两个功能：维数约减和数据可视化；白化的目的是去掉数据之间的相关性。深度学习的一个主要工作就是数据的预处理(Based on PCA and data pre-whitening operation, PCA has two functions: dimensionality reduction and data visualization whitening purpose is to remove the correlation between the data. One of the main work is to study the depth of pre-processed data)

自己编写的小波去噪原程序,使用的是轶值降噪的方法，和大家一起学习一下。(I have written the original wavelet denoising procedure, using a method of noise reduction Yi value, and the community together to learn about.)

说明：  用于一阶时滞系统的辨识，共有切线法与两点法的程序。经过测试，效果较好，适用于学习系统辨识的初学者。(First-order delay system for identification, a total tangent method and the two law procedures. Tested the effect is good for beginners to learn the system identification.)

other codes for matlab lab session needed

关于盲辨识方面，讨论关于盲辨识方法所能起到的效果，很好的例子(On blind identification, the discussion of blind identification method that can be played on the effect of good example)

GAUSSIAN FUNCTION IMPLETEMENTD IN MATLAB BUT I NO SURE THIS WORK

1．编写一个程序，读取一句英语短语，并将其编制成莫尔斯码 莫尔斯码是世界上最著名的编码机制，是1832年由Samuel Morse创立的，用于电报系统使用。莫尔斯码编码规则如下：①字母、数字和一些特殊符号（如圆点、逗号、分号）用一系列指定的点和线表示；②单词之间用三个空格分开，没有点和线；③编码字母之间用一个空格。 (1 write a program to read a word, English phrases, and programmed into the Morse code Morse Ma is the encoding mechanism of the world s most famous, is in 1832 by the Samuel Morse foundation, used for telegraph system. Morse coding rules are as follows: ① letters, numbers and special symbols (such as dot, comma, semicolon) is represented by a series of specified points and lines the words are separated by three spaces, no point and line the code letters with a space. )