signal denoising using wavelet transform

how do i use wavelet transform in denoising the signal also how i calculate psd? help me. thanks in advance

Answer 1

[Wayne King]

See the help for wden() to implement denoising using the orthogonal discrete wavelet transform.

See the help for spectrum.periodogram to see how to compute a PSD estimate.

[Wayne King]

By the way, beginning with R2011b, you can use the interactive tool, wavemenu, and generate MATLAB code for wavelet denoising.