Introduction - If you have any usage issues, please Google them yourself
Under MATLAB wavelet through a variety of experiments to understand the principle of wavelet transform tutorial and sample code included in the source code has a number of examples: a linear one-dimensional non-linear approximation, nonlinear two-dimensional linear approximation, the use of linear filtering filter noise, the use of wavelet thresholding to eliminate noise, the use of one-dimensional wavelet transform compressed signal, two-dimensional wavelet image compression and so on.