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annotate m-toolbox/classes/@pzmodel/abcascade.m @ 0:f0afece42f48

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Import.
author Daniele Nicolodi <nicolodi@science.unitn.it>
date Wed, 23 Nov 2011 19:22:13 +0100
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Daniele Nicolodi <nicolodi@science.unitn.it>
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1 % ABCASCADE Cascade two filters together to get a new filter.
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2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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3 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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4 % DESCRIPTION: ABCASCADE Cascade two filters together to get a new filter.
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5 %
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6 % CALL: [a,b] = abcascade(a1,b1,a2,b2)
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7 %
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8 % VERSION: $Id: abcascade.m,v 1.3 2010/10/29 16:09:15 ingo Exp $
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9 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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10 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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11
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12 function [ao,bo] = abcascade(a1,b1,a2,b2)
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13
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14 n = length(a1);
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15 m = length(a2);
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16 N = m+n-1;
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17
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18 alpha = zeros(1, N);
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19 beta = zeros(1, N);
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20
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21 for i=0:n-1
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22 for j=0:m-1
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23 alpha(i+j+1) = alpha(i+j+1) + a1(i+1)*a2(j+1);
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24 beta(i+j+1) = beta(i+j+1) + b1(i+1)*b2(j+1);
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25 end
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26 end
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27
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28 ao = alpha;
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29 bo = beta;
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30 end
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