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hi,
you can use these m files: wavedec2 for wavelet decomposition and waverec2 for wavelet reconstruction.
you can also get the detail coefficients with this mfile: detcoef2
and approximation coefficients with this one: appcoef2
ofcourse u must have wavelet toolbox
Re: wavelet
Have a look at these functions in matlab help: wavedec2, waverec2, appcoef2, detcoef2.
These functions let you have access to wavelet coefficients for digital images. There must be similar functions for working with sounds.
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