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

 Accepted Answer

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.

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

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