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comparison m-toolbox/classes/@mfir/mklowpass.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 % MKLOWPASS return a low pass filter mfir().
2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3 %
4 % DESCRIPTION: MKLOWPASS return a low pass filter mfir().
5 %
6 % CALL: f = mklowpass(f, pl)
7 %
8 % VERSION: $Id: mklowpass.m,v 1.8 2011/04/04 11:37:02 hewitson Exp $
9 %
10 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
11
12 function f = mklowpass(f, pl)
13
14 g = find(pl, 'gain');
15 fc = find(pl, 'fc');
16 fs = find(pl, 'fs');
17 order = find(pl, 'order');
18 win = find(pl, 'Win');
19
20 utils.helper.checkFilterOptions(pl);
21
22 f.name = 'lowpass';
23 f.fs = fs;
24 f.a = g.*fir1(order, 2*fc(1)/fs, 'low', win.win);
25 f.gd = (f.ntaps-1)/2;
26 f.histout = zeros(1,f.ntaps-1); % initialise output history
27 end
28