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1 /*
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2 Harmonic sinusoidal modelling and tools
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3
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4 C++ code package for harmonic sinusoidal modelling and relevant signal processing.
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5 Centre for Digital Music, Queen Mary, University of London.
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6 This file copyright 2011 Wen Xue.
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7
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8 This program is free software; you can redistribute it and/or
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9 modify it under the terms of the GNU General Public License as
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10 published by the Free Software Foundation; either version 2 of the
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11 License, or (at your option) any later version.
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12 */
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13 #ifndef WindowFunctionsH
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14 #define WindowFunctionsH
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15
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16 /**
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17 \file windowfunctions.h - implements a few common window functions.
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18 */
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19
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20 enum WindowType
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21 {
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22 wtRectangle,
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23 wtTriangular,
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24 wtHamming,
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25 wtBlackman,
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26 wtGaussian,
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27 wtKaiser,
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28 wtHalfCosine,
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29 wtHann,
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30 wtHannSqr,
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31 wtHann3sqrt
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32 };
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33
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34 //--window function computation routines-------------------------------------
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35 void FillWindow(double* newwindow, WindowType wt, int Count, int* ips=0, double* dps=0);
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36 double* NewWindow(WindowType wt, int Count, int* ips=0, double* dps=0, double* newwindow=0);
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37 double* NewWindow8(WindowType wt, int Count, int* ips=0, double* dps=0, double* newwindow=0);
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38 double* NewdWindow(WindowType wt, int Count, int* ips=0, double* dps=0, double* newdwindow=0);
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39 double* NewddWindow(WindowType wt, int Count, int* ips=0, double* dps=0, double* newddwindow=0);
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40 double* NewdddWindow(WindowType wt, int Count, int* ips=0, double* dps=0, double* newdddwindow=0);
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41
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42 //--other functions----------------------------------------------------------
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43 void windowspec(WindowType wt, int N, int* M, double* c, double* iH2, double* d=0);
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44
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45 #endif
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