annotate WindowFunction.cpp @ 1:3fd1a41b089b
* Now displaying some output. Needs testing to see if bugs are present.
| author |
Carl Bussey <c.bussey@se10.qmul.ac.uk> |
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Wed, 09 Jul 2014 10:26:51 +0100 |
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31d2a7e07786 |
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21147df9cb2d |
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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 #include <cmath>
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11 #include <vector>
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12 #include <iostream>
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13 using std::vector;
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14
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15 void
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16 WindowFunction::hanning(float *signal, const unsigned int N, const bool normalise){
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17
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18 float sum = 0;
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19 for(int i = 0; i < N; i++){
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20 signal[i] = 0.5*(1-cos((float)2*M_PI*i/N));
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21 sum += signal[i];
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22 }
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23 if (normalise){
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24 for(int i = 0; i < N; i++){
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25 signal[i] /= sum;
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26 }
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27 }
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28 } |
