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comparison m-toolbox/classes/@mfir/mkbandreject.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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-1:000000000000 0:f0afece42f48
1 % MKBANDREJECT return a low pass filter mfir(). A Butterworth filter is used.
2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3 %
4 % DESCRIPTION: MKBANDREJECT return a low pass filter mfir().
5 % A Butterworth filter is used.
6 %
7 % CALL: f = mkbandreject(f, pl)
8 %
9 % VERSION: $Id: mkbandreject.m,v 1.10 2011/04/04 11:37:02 hewitson Exp $
10 %
11 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
12
13 function f = mkbandreject(f, pl)
14
15 g = find(pl, 'gain');
16 fc = find(pl, 'fc');
17 fs = find(pl, 'fs');
18 order = find(pl, 'order');
19 win = find(pl, 'Win');
20
21 utils.helper.checkFilterOptions(pl);
22
23 f.name = 'bandreject';
24 f.fs = fs;
25 f.a = g.*fir1(order, 2.*fc/fs, 'stop', win.win);
26 f.gd = (f.ntaps-1)/2;
27 f.histout = zeros(1,f.ntaps-1); % initialise output history
28 end
29