annotate WindowFunction.cpp @ 11:09fb76606b2b
* Removed many unnecessary heap allocations with objects
| author |
Carl Bussey <c.bussey@se10.qmul.ac.uk> |
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Wed, 13 Aug 2014 10:45:46 +0100 |
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1 //
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2 // WindowFunction.cpp
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3 // Tempogram
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4 //
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5 // Created by Carl Bussey on 26/06/2014.
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6 // Copyright (c) 2014 Carl Bussey. All rights reserved.
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7 //
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8
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9 #include "WindowFunction.h"
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10 using std::vector;
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11
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12 //static function
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13 void
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14 WindowFunction::hanning(float *window, const unsigned int N, const bool normalise){
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15
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16 float sum = 0;
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17 for(int i = 0; i < N; i++){
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18 window[i] = 0.5*(1-cos((float)2*M_PI*i/N));
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19 sum += window[i];
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20 }
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21 if (normalise){
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22 for(int i = 0; i < N; i++){
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23 window[i] /= sum;
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24 }
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25 }
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26 } |
