WFILT_SYM Symlet filters
Usage: [h,g,a]=wfilt_sym(N);
[h,g,a]=WFILT_SYM(N) generates the "least asymmetric" Daubechies'
orthogonal wavelets or "symlets" with N vanishing moments and
length 2N.
Zeros of the trigonometrical polynomial the filters consist of in the
Z-plane are selected alternatingly inside and outside the unit circle.
Remark: Filters generated by this routine differ slightly from the
ones in the reference (table 6.3, figure. 6.4) because of the ambiguity
in the algorithm.
Examples:
---------
:
wfiltinfo('sym8');
References:
I. Daubechies. Ten Lectures on Wavelets. Society for Industrial and
Applied Mathematics, Philadelphia, PA, USA, 1992.
Package: ltfat