Signal

实现2D声波方程正演，用于地球物理勘探中的声波正演(Achieve 2D acoustic wave equation forward modeling for geophysical exploration sonic Forward)

从网上下载的一个和matlab实现快速傅立叶变换相关的程序，希望能够给大家一点帮助(Downloaded from the Internet and matlab realize a Fast Fourier Transform related procedures, hoping to give us some help)

基于Matlab实现了各种数字图像水印，包括小波变换、lsb等 (Based on Matlab realize a variety of digital image watermarking, including the wavelet transform, lsb, etc.)

说明：  用Matlab仿真实现的说话人识别 说话人识别 说话人识别 说话人识别(speechcode speechcode speechcode speechcode speechcode)

短时傅里叶变换可以用差分模式来实现，对书上的运算式做了稍许的改变。改变-计算差分序列的第一列数据时用的是第一列的元素减去当前行的最后一列元素。原算法中采用的是第一列元素减去下一行第二列元素。原算法加窗之后结果比较好，不加窗时结果误差很大，而改变之后的算法不加窗效果依然很好。(Short time Fourier transform can be used to achieve the differential mode of expression on the book made a slight change. Change- calculating the difference sequence of the data with the first column is the first column of the matrix by subtracting the current element in the last column of row. Is used in the original algorithm subtracts the elements of the first column of the next row and the second column elements. After the results of the original algorithm windowed better, when the results window without great error, and after changing algorithms no window effect is still very good.)

振动信号的FFT分析，含有具体的振动算例(FFT analysis of vibration signals, vibration contain specific examples)

排队论问题的matlab仿真程序，梦特卡罗算法写的(queuing theory emulated using Monte Carto arithmetic)

Initializes physical DMA on all OHCI 1394 controllers.

将电力市场数据使用小波分解成为两个长度相等的低频和高频小波，然后可以用于灰色模型的建模和波形模型建模！(The electricity market data using wavelet decomposition into two equal length low and high frequency wavelet gray model can then be used for modeling and waveform modeling!)

该程序是幅值谱中校正频谱峰值的比值校正法，可以自设定校正谱峰值的个数，同时还可以校正相位，校正的结果很准确。(The program is corrected spectrum peak in the amplitude spectrum ratio correction method, since setting the number of correction of spectral peaks, but also can be corrected very accurate phase correction results.)