nf_ne

orthogonal frequency division multiplexing

add a noise to a watermarked audio signal to test the robustness input : vector representing the watermarked audio file & the desired SNR output : vector representing the noisy watermarked audio file

说明：  利用西储数据，进行滚动轴承的诊断，提取故障特征。(The rolling bearing is diagnosed and the fault features are extracted by using the data of Western storage.)

binary addition calculator can add any two bit strings, the inputs must be of same length

最速下降法求解非线性方程组，此程序求解了【6x-sin（y）-50=0 cos（x）-4y-70=0】这一方程的解，大家可以把方程组改换，应用于自己的题目，例子。(Steepest descent method for solving nonlinear equations, this procedure solved 【6x-sin (y)-50 = 0 cos (x)-4y-70 = 0】 solution of this equation, we can change the equations, applications in their own subject, example.)

In an image edge is more important to interpolate the missing pixel values. In similarity algorithm edge is detected using the unified high frequency map. Based on this the missing green pixels are interpolated by taking the average of surrounding values. Then the missing red and blue values are interpolated similarly.

用上跨零点法对波浪数据进行统计分析 有效波高 波周期 (Spend zero-crossing method of wave data for statistical analysis of the significant wave height wave period)

说明：  使用维纳滤波器对信号进行处理，得到噪声状况下的信号，这个滤波器是数字信号处理中非常经典的一个。代码里还提供了维纳的AR参数估计(Wiener filter to use signal processing, noise signal conditions, this filter is digital signal processing in a very classic. There is also a code of the AR Wiener Parameter Estimation)

Get stock data from Yahoo! Finance to Matlab.

matlab小波分析的程序，实现与傅里叶变换的对比(matlab wavelet analysis procedures to achieve contrast with the Fourier transform)