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von raredesign | Dez 3, 2019 | Allgemein | 0 Kommentare
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<a href="SemitoneCenterFinder_8hxx.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (c) 2001-2006 MUSIC TECHNOLOGY GROUP (MTG)</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * UNIVERSITAT POMPEU FABRA</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * This program is free software; you can redistribute it and/or modify</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * it under the terms of the GNU General Public License as published by</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * the Free Software Foundation; either version 2 of the License, or</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * (at your option) any later version.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * This program is distributed in the hope that it will be useful,</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * GNU General Public License for more details.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * You should have received a copy of the GNU General Public License</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * along with this program; if not, write to the Free Software</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#ifndef SemitoneCenterFinder_hxx</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor"></span><span class="preprocessor">#define SemitoneCenterFinder_hxx</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor"></span><span class="preprocessor">#include <list></span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <vector></span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <cmath></span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">namespace </span>Simac</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> {</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div>
<div class="line"><a name="l00032"></a><span class="lineno"><a class="code" href="classSimac_1_1SemitoneCenterFinder.html"> 32</a></span> <span class="keyword">class </span><a class="code" href="classSimac_1_1SemitoneCenterFinder.html">SemitoneCenterFinder</a></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> {</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00035"></a><span class="lineno"><a class="code" href="classSimac_1_1SemitoneCenterFinder.html#a1ac5a64b5312e5f5598148895bba75e8"> 35</a></span>  <span class="keyword">typedef</span> std::vector<std::pair<double, double> > <a class="code" href="classSimac_1_1SemitoneCenterFinder.html#a1ac5a64b5312e5f5598148895bba75e8">PeakList</a>;</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">private</span>:</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keywordtype">unsigned</span> _histogramSize;</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordtype">unsigned</span> * _histogram;</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keywordtype">unsigned</span> _binsPerSemitone;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00041"></a><span class="lineno"><a class="code" href="classSimac_1_1SemitoneCenterFinder.html#aad9fc9ef667b4d56f8d9aa8c4620d13e"> 41</a></span>  <a class="code" href="classSimac_1_1SemitoneCenterFinder.html#aad9fc9ef667b4d56f8d9aa8c4620d13e">SemitoneCenterFinder</a>()</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  {</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  _binsPerSemitone = 3;</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  _histogramSize = 30;</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  _histogram = <span class="keyword">new</span> <span class="keywordtype">unsigned</span>[_histogramSize];</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0; i<_histogramSize; i++)</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  _histogram[i]=0;</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  }</div>
<div class="line"><a name="l00049"></a><span class="lineno"><a class="code" href="classSimac_1_1SemitoneCenterFinder.html#a5ca8e7fc245fbe4b6899b566e3fc6280"> 49</a></span>  <a class="code" href="classSimac_1_1SemitoneCenterFinder.html#a5ca8e7fc245fbe4b6899b566e3fc6280">~SemitoneCenterFinder</a>()</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  {</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">delete</span> [] _histogram;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  }</div>
<div class="line"><a name="l00053"></a><span class="lineno"><a class="code" href="classSimac_1_1SemitoneCenterFinder.html#a0872e1f06243499895714ef143d7068a"> 53</a></span>  <span class="keywordtype">void</span> <a class="code" href="classSimac_1_1SemitoneCenterFinder.html#a0872e1f06243499895714ef143d7068a">doIt</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> nPeaks, <span class="keyword">const</span> <span class="keywordtype">double</span> * peakPositions, <span class="keyword">const</span> <span class="keywordtype">double</span> * peakValues)</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  {</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0; i<nPeaks; i++)</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  {</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordtype">double</span> semitonePosition = std::fmod(peakPositions[i],_binsPerSemitone);</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordtype">unsigned</span> histogramBin=semitonePosition*_histogramSize/_binsPerSemitone+0.5;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  _histogram[histogramBin]++;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  }</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  }</div>
<div class="line"><a name="l00062"></a><span class="lineno"><a class="code" href="classSimac_1_1SemitoneCenterFinder.html#a716828f1553db11d966f0633922f7c13"> 62</a></span>  <span class="keywordtype">double</span> <a class="code" href="classSimac_1_1SemitoneCenterFinder.html#a716828f1553db11d966f0633922f7c13">output</a>()</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  {</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordtype">unsigned</span> maxPos=0;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordtype">unsigned</span> maxOcurrences=0;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0; i<_histogramSize; i++)</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  {</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">if</span> (_histogram[i]<=maxOcurrences) <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  maxOcurrences=_histogram[i];</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  maxPos=i;</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  }</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">return</span> maxPos*_binsPerSemitone/float(_histogramSize);</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  }</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> };</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> } <span class="comment">// namespace Simac</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="preprocessor">#endif// SemitoneCenterFinder_hxx</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="preprocessor"></span></div>
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