Mercurial > hg > ltpda

annotate m-toolbox/classes/@miir/fromParfrac.m @ 3:960fe1aa1c10 database-connection-manager

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Add LTPDADatabaseConnectionManager implementation. Java code
author Daniele Nicolodi <nicolodi@science.unitn.it>
date Mon, 05 Dec 2011 16:20:06 +0100
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Daniele Nicolodi <nicolodi@science.unitn.it>
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1 % Construct an miir from a parfrac
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2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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3 %
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4 % FUNCTION: fromParfrac
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5 %
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6 % DESCRIPTION: Construct an miir from a parfrac
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7 %
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8 % CALL: f = fromParfrac(f, pli)
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9 %
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10 % PARAMETER: type: String with filter type description
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11 % pli: Parameter list object
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12 %
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13 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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14 function f = fromParfrac(f, pli)
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15
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16 VERSION = '$Id: fromParfrac.m,v 1.12 2011/08/15 11:22:43 hewitson Exp $';
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17 ii = miir.getInfo('miir', 'From Parfrac');
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18 % Set the method version string in the minfo object
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19 ii.setMversion([VERSION '-->' ii.mversion]);
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20
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21 % Add default values
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22 pl = applyDefaults(ii.plists, pli);
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23
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24 % Get parameters
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25 pf = find(pl, 'parfrac');
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26 fs = find(pl, 'fs');
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27
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28 if isempty(fs)
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29 % get max freq in pzmodel
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30 fs = 8*getupperFreq(pf);
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31 warning([sprintf('!!! no sample rate specified. Designing for fs=%2.2f Hz.', fs)...
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32 sprintf('\nThe filter will be redesigned later when used.')]);
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33 end
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34 % make MIIR filter
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35 pfstruct = utils.math.lp2z('INOPT', 'PF', 'RES', pf.res, 'POLES', pf.poles, ...
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36 'DTERMS', pf.dir, 'MODE', 'DBL', 'FS', fs);
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37
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38 for jj=1:numel(pfstruct)
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39 pl = copy(pl,1);
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40
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41 f(jj).a = pfstruct(jj).num;
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42 f(jj).b = pfstruct(jj).den;
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43 f(jj).fs = fs;
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44
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45 if isempty(pl.find('name'))
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46 pl.pset('name', sprintf('iir(%s_%d)', pf.name, jj));
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47 end
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48 if isempty(pl.find('description'))
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49 pl.pset('description', pf.description);
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50 end
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51 if isempty(pl.find('iunits'))
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52 pl.pset('iunits', pf.iunits);
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53 end
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54 if isempty(pl.find('ounits'))
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55 pl.pset('ounits', pf.ounits);
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56 end
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57
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58 % Add history
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59 f(jj).addHistory(ii, pl, [], pf.hist);
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60 end
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61
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62 % Set object properties
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63 f.setObjectProperties(pl);
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64
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65 end % End fromParfrac