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1 function [af, sf] = FSfarras
2
3 % Farras filters organized for the dual-tree
4 % complex DWT.
5 %
6 % USAGE:
7 %    [af, sf] = FSfarras
8 % OUTPUT:
9 %    af{i}, i = 1,2 - analysis filters for tree i
10 %    sf{i}, i = 1,2 - synthesis filters for tree i
11 % See farras, dualtree, dualfilt1.
12 %
13 % WAVELET SOFTWARE AT POLYTECHNIC UNIVERSITY, BROOKLYN, NY
14 % http://taco.poly.edu/WaveletSoftware/
15
16 af{1} = [
17                   0                  0
18   -0.08838834764832  -0.01122679215254
19    0.08838834764832   0.01122679215254
20    0.69587998903400   0.08838834764832
21    0.69587998903400   0.08838834764832
22    0.08838834764832  -0.69587998903400
23   -0.08838834764832   0.69587998903400
24    0.01122679215254  -0.08838834764832
25    0.01122679215254  -0.08838834764832
26                   0                  0
27  ];
28    
29 sf{1} = af{1}(end:-1:1, :);
30
31 af{2} = [
32    0.01122679215254                  0
33    0.01122679215254                  0
34   -0.08838834764832  -0.08838834764832
35    0.08838834764832  -0.08838834764832
36    0.69587998903400   0.69587998903400
37    0.69587998903400  -0.69587998903400
38    0.08838834764832   0.08838834764832
39   -0.08838834764832   0.08838834764832
40                   0   0.01122679215254
41                   0  -0.01122679215254
42 ];
43
44 sf{2} = af{2}(end:-1:1, :);