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Daubechies wavelet filter


F = dbwavf(W)


F = dbwavf(W) returns the scaling filter associated with Daubechies wavelet specified by the character vector W where W = 'dbN'. Possible values for N are 1, 2, 3, ..., 45.


% Set Daubechies wavelet name. 
wname = 'db4'; 

% Compute the corresponding scaling filter. 
f = dbwavf(wname)

f =
Columns 1 through 7 
0.1629  0.5055  0.4461 -0.0198 -0.1323  0.0218  0.0233
Column 8 

Introduced before R2006a

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