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How to write matlab code for 1D wavelet transform with db4...
Answers (1)
Wayne King
on 21 Sep 2011
Hi see
wavedec() in the Wavelet Toolbox. You need to be careful about what you call the db4 wavelet. If that is the number of taps, then that is the 'db2' wavelet in the Wavelet Toolbox.
An example of the DWT down to level 4 using the 'db2' wavelet.
x = randn(1024,1);
C,L] = wavedec(x,4,'db2');
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on 21 Sep 2011
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