Mercurial > hg > vamp-tempogram
annotate WindowFunction.cpp @ 56:f1c128d0f78c v1.0
Small text fix
author | Chris Cannam |
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date | Thu, 16 Oct 2014 14:22:47 +0100 |
parents | 4cf2d163127b |
children |
rev | line source |
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Chris@43 | 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ |
Chris@43 | 2 |
Chris@43 | 3 /* |
Chris@43 | 4 Vamp Tempogram Plugin |
Chris@43 | 5 Carl Bussey, Centre for Digital Music, Queen Mary University of London |
Chris@43 | 6 Copyright 2014 Queen Mary University of London. |
Chris@43 | 7 |
Chris@43 | 8 This program is free software; you can redistribute it and/or |
Chris@43 | 9 modify it under the terms of the GNU General Public License as |
Chris@43 | 10 published by the Free Software Foundation; either version 2 of the |
Chris@43 | 11 License, or (at your option) any later version. See the file |
Chris@43 | 12 COPYING included with this distribution for more information. |
Chris@43 | 13 */ |
c@0 | 14 |
c@0 | 15 #include "WindowFunction.h" |
c@0 | 16 using std::vector; |
c@0 | 17 |
c@9 | 18 //static function |
c@0 | 19 void |
c@13 | 20 WindowFunction::hanning(float * window, const unsigned int &N, const bool &normalise){ |
c@0 | 21 |
c@0 | 22 float sum = 0; |
c@20 | 23 for(int i = 0; i < (int)N; i++){ |
c@11 | 24 window[i] = 0.5*(1-cos((float)2*M_PI*i/N)); |
c@11 | 25 sum += window[i]; |
c@0 | 26 } |
c@0 | 27 if (normalise){ |
c@20 | 28 for(int i = 0; i < (int)N; i++){ |
c@11 | 29 window[i] /= sum; |
c@0 | 30 } |
c@0 | 31 } |
Chris@43 | 32 } |