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comparison m-toolbox/test/test_mfir_from_spec.m @ 0:f0afece42f48

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author Daniele Nicolodi <nicolodi@science.unitn.it>
date Wed, 23 Nov 2011 19:22:13 +0100
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1 function test_mfir_from_spec()
2
3 % TEST_MFIR_FROM_SPEC test script for mfir constructor from AO/fsdata.
4 %
5 % M Hewitson 14-05-07
6 %
7 % $Id: test_mfir_from_spec.m,v 1.4 2008/09/19 14:03:50 ingo Exp $
8 %
9
10 Ntaps = 512;
11
12 %% Make ao
13
14 % pole zero model
15 pzm = pzmodel(1, [pz(0.1, 2) pz(0.5, 40)] , [pz(.03) pz(1.55, 25)]);
16
17 % Compute time-series
18 Nsecs = 1e4; % Number of seconds desired
19 swin = specwin('Kaiser', 10, 150); % Blending window
20 x12 = fngen(pzm, plist('Win', swin, 'Nsecs', Nsecs)); % create time-series
21
22
23 %% Make spectrum
24
25 pl = plist('Nfft', round(200*x12.data.fs));
26 x12xx = pwelch(x12, pl);
27
28 %% Make filter
29
30 ffs = mfir(x12xx, plist('N', Ntaps, 'Win', specwin('Hamming', 10)));
31
32 rfs = resp(ffs, plist('f', [x12xx.data.x].'));
33
34 pl = plist('nsecs', Nsecs,'fs', x12.data.fs,'tsfcn', 'randn(size(t))');
35 anoise = ao(pl);
36
37 tic
38 anew = filter(4*anoise, ffs);
39 toc
40 pl = plist('Nfft', round(200*x12.data.fs));
41 anewxx = pwelch(anew, pl);
42
43 %%
44 iplot(x12xx, rfs, anewxx)
45
46 iplot(x12xx./anewxx)
47 utils.plottools.yscale('lin')
48
49 %% Make inverse filter
50 ffs = mfir(1./x12xx, plist('N', Ntaps, 'Win', specwin('Hamming', 10)));
51
52 rfs = resp(ffs, plist('f', x12xx.data.x));
53 iplot(rfs)
54
55 x12wht = filter(x12, ffs);
56 pl = plist('Nfft', round(200*x12.data.fs));
57 x12whtxx = pwelch(x12wht, pl);
58
59 iplot(x12whtxx)
60
61 return
62
63 %% Write an m-file from AO
64 pth = get_curr_m_file_path(mfilename);
65 ao2m(x12l, [pth, 'test.m']);
66
67 % now run it
68 clear all
69 test
70
71 figure
72
73 plot(a1)
74 figure
75 plot(a1.hist)
76
77 % END
78
79
80 % END