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dbwavf

Daubechies wavelet filter

Description

example

f = dbwavf(wname) returns the scaling filter associated with the Daubechies wavelet specified by wname. f is a real-valued vector.

Examples

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Specify the order 4 Daubechies wavelet.

wname = 'db4';

Compute the corresponding scaling filter.

f = dbwavf(wname);
f'
ans = 8×1

    0.1629
    0.5055
    0.4461
   -0.0198
   -0.1323
    0.0218
    0.0233
   -0.0075

Input Arguments

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Daubechies wavelet with N vanishing moments, where N is a positive integer in the closed interval [1, 45].

Introduced before R2006a