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1 %
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2 % INTERVAL2DEGREE
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3 %
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4 % [degree,success,errormessage] = interval2degree(interval,accidentals,{verbose})
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5 %
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6 % Converts an interval and accidental pair to a degree string.
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7 %
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8 % Success = 1 if interval converted correctly, 0 otherwise.
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9 %
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10 % If optional argument 'verbose' is 1, function prints any errormessage to
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11 % the screen.
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12 %
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13 % returns: degree (string)
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14 % success (boolean)
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15 % errormessage (string)
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16 %
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17 % Author: Christopher Harte, August 2005
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18 %
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19 % Copyright: Centre for Digital Music, Queen Mary University of London 2005
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20 %
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21 % This file is part of the C4DM Chord Toolkit.
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22 %
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23 % The C4DM Chord Toolkit is free software; you can redistribute it and/or
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24 % modify it under the terms of the GNU General Public License as published
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25 % by the Free Software Foundation; either version 2 of the License, or
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26 % (at your option) any later version.
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27 %
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28 % The C4DM Chord Toolkit is distributed in the hope that it will be useful,
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29 % but WITHOUT ANY WARRANTY; without even the implied warranty of
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30 % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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31 % GNU General Public License for more details.
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32 %
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33 % You should have received a copy of the GNU General Public License
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34 % along with the C4DM Toolkit; if not, write to the Free Software
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35 % Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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36
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37 %
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38 function [degree,success,errormessage] = interval2degree(interval,accidentals, verbose)
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39
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40 % set verbose default to 0
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41 if nargin < 3
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42 verbose = 0;
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43 end
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44
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45 errormessage = '';
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46
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47
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48 success = 1;
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49 degree = '';
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50
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51
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52 if accidentals >=1
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53 % then the interval is either a natural or has a number of sharps
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54 if accidentals ~= 0
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55 for index = 1:accidentals
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56 degree = [degree '#'];
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57 end
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58 end
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59
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60 else
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61 % then the interval has a number of flats
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62
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63 for index = 1:abs(accidentals)
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64
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65 degree = [degree 'b'];
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66 end
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67
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68 end
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69
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70 if isnumeric(interval)
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71
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72 intervalstring = num2str(interval);
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73 degree = [degree intervalstring];
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74
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75 else
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76 success = 0;
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77 errormessage = 'Error in interval2degree: incorrect interval';
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78 end
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79
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80 if (success == 0) && (verbose == 1)
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81 fprintf(1,errormessage);
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82 end
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83
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84
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