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Wavelab Toolbox >> Wavelab Toolbox > Tools for DeNoising Signals with White Gaussian Noise > InvShrink

InvShrink

Shrinkage with Exponential Factor applied

Calling Sequence

s = InvShrink(wc,L,sa,alpha)

Parameters

Inputs:

wc :

Wavelet Transform of noisy sequence with N(0,1) noise

L :

low-frequency cutoff for Wavelet Transform

sa :

noise level at highest resolution level

alpha :

decay rate of noise level with resolution level

Outputs:

ws :

result of applying FixShrink to each wavelet level, with appropriate weighting

Authors

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