matlab的fft函数使用注意事项，以及傅里叶变换的特征和理解。-Note the use of matlab' s fft function, as well as the Fourier transform of the characteristic and understanding.

wavelet based watermarking with dwt2 function in matlab it s an implementaton of an ieee paper.its a visible watermark it calculates the peak signal to noise ratio and the mean square error

labview源程序，是NI公司自带的源程序，很复杂，但是实现的功能很强大。-labview source code, source code is the NI the company' s own, very complex, but the implementation of the function is very powerful.

MATLAB function to initialize and call the solve_sps2d function, which implements a 2-D solution of the nonlinear wave equation using a psuedospectral / staggered A-B method, including attenuation modeled with two relaxation mechanisms