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23 <td style="padding-left: 0.5em;">
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24 <div id="projectname">BTrack - A Real-Time Beat Tracker
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25 </div>
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26 </td>
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31 <!-- end header part -->
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62 <li><a href="globals.html"><span>File Members</span></a></li>
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70 <a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Classes</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Files</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark"> </span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark"> </span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark"> </span>Pages</a></div>
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81 <li class="navelem"><a class="el" href="dir_68267d1309a1af8e8297ef4c3efbcdba.html">src</a></li> </ul>
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84 <div class="header">
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85 <div class="headertitle">
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86 <div class="title">BTrack.h</div> </div>
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87 </div><!--header-->
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88 <div class="contents">
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89 <a href="_b_track_8h.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>
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90 <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"></span><span class="comment">//=======================================================================</span></div>
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91 <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div>
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92 <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#ifndef __BTRACK_H</span></div>
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93 <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor"></span><span class="preprocessor">#define __BTRACK_H</span></div>
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94 <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor"></span></div>
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95 <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include "<a class="code" href="_onset_detection_function_8h.html" title="A class for calculating onset detection functions.">OnsetDetectionFunction.h</a>"</span></div>
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96 <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <vector></span></div>
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97 <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div>
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98 <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment">//=======================================================================</span></div>
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99 <div class="line"><a name="l00034"></a><span class="lineno"><a class="code" href="class_b_track.html"> 34</a></span> <span class="comment"></span><span class="keyword">class </span><a class="code" href="class_b_track.html">BTrack</a> {</div>
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100 <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  </div>
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101 <div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">public</span>:</div>
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102 <div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  </div>
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103 <div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="comment">//=======================================================================</span></div>
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104 <div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"></span> <a class="code" href="class_b_track.html#a243ac408666ce0301fecd9b0a2a6f307">BTrack</a>();</div>
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105 <div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  </div>
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106 <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <a class="code" href="class_b_track.html#a243ac408666ce0301fecd9b0a2a6f307">BTrack</a>(<span class="keywordtype">int</span> hopSize_);</div>
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107 <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  </div>
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108 <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <a class="code" href="class_b_track.html#a243ac408666ce0301fecd9b0a2a6f307">BTrack</a>(<span class="keywordtype">int</span> hopSize_,<span class="keywordtype">int</span> frameSize_);</div>
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109 <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  </div>
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110 <div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="comment">//=======================================================================</span></div>
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111 <div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="class_b_track.html#a70244e9a5aa8f860533fa56f942b7ede">updateHopAndFrameSize</a>(<span class="keywordtype">int</span> hopSize_,<span class="keywordtype">int</span> frameSize_);</div>
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112 <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  </div>
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113 <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="comment">//=======================================================================</span></div>
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114 <div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="class_b_track.html#abb7ce7253095e6f859ef7b30f06ce051">processAudioFrame</a>(<span class="keywordtype">double</span> *frame);</div>
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115 <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  </div>
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116 <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordtype">void</span> <a class="code" href="class_b_track.html#a6fab18732bef8c87152e93dec9e4f854">processOnsetDetectionFunctionSample</a>(<span class="keywordtype">double</span> sample);</div>
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117 <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  </div>
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118 <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="comment">//=======================================================================</span></div>
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119 <div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment"></span> <span class="keywordtype">int</span> <a class="code" href="class_b_track.html#ac06aa079977062bfa2930cdca45e69fb">getHopSize</a>();</div>
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120 <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  </div>
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121 <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordtype">bool</span> <a class="code" href="class_b_track.html#ac92eaea0e42dd18c79de10bf852d7f4a">beatDueInCurrentFrame</a>();</div>
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122 <div class="line"><a name="l00078"></a><span class="lineno"> 78</span> </div>
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123 <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordtype">double</span> <a class="code" href="class_b_track.html#a17cea0a4dff3908660e4117e9a6c42bb">getCurrentTempoEstimate</a>();</div>
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124 <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  </div>
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125 <div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordtype">double</span> <a class="code" href="class_b_track.html#a7ccb5059d0f00e3217ea686e4c1e156d">getLatestCumulativeScoreValue</a>();</div>
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126 <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  </div>
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127 <div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="comment">//=======================================================================</span></div>
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128 <div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="class_b_track.html#a96cf4088e40dff66ce15ada1f671a186">setTempo</a>(<span class="keywordtype">double</span> tempo);</div>
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129 <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  </div>
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130 <div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordtype">void</span> <a class="code" href="class_b_track.html#a550829be9b4c58cd53195ec4900c7c71">fixTempo</a>(<span class="keywordtype">double</span> tempo);</div>
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131 <div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  </div>
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132 <div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordtype">void</span> <a class="code" href="class_b_track.html#a22917ea231d2efd5670a764dd5a98983">doNotFixTempo</a>();</div>
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133 <div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  </div>
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134 <div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="comment">//=======================================================================</span></div>
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135 <div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="comment"></span> <span class="keyword">static</span> <span class="keywordtype">double</span> <a class="code" href="class_b_track.html#aa66d0b9dfb4408e8cf84398f03b60a56">getBeatTimeInSeconds</a>(<span class="keywordtype">long</span> frameNumber,<span class="keywordtype">int</span> hopSize,<span class="keywordtype">int</span> fs);</div>
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136 <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  </div>
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137 <div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keyword">static</span> <span class="keywordtype">double</span> <a class="code" href="class_b_track.html#aa66d0b9dfb4408e8cf84398f03b60a56">getBeatTimeInSeconds</a>(<span class="keywordtype">int</span> frameNumber,<span class="keywordtype">int</span> hopSize,<span class="keywordtype">int</span> fs);</div>
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138 <div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  </div>
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139 <div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  </div>
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140 <div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="keyword">private</span>:</div>
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141 <div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  </div>
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142 <div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordtype">void</span> initialise(<span class="keywordtype">int</span> hopSize_,<span class="keywordtype">int</span> frameSize_);</div>
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143 <div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  </div>
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144 <div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keywordtype">void</span> setHopSize(<span class="keywordtype">int</span> hopSize_);</div>
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145 <div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  </div>
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146 <div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keywordtype">void</span> resampleOnsetDetectionFunction();</div>
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147 <div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  </div>
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148 <div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordtype">void</span> updateCumulativeScore(<span class="keywordtype">double</span> odfSample);</div>
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149 <div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  </div>
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150 <div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordtype">void</span> predictBeat();</div>
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151 <div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  </div>
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152 <div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordtype">void</span> calculateTempo();</div>
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153 <div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  </div>
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154 <div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordtype">void</span> adaptiveThreshold(<span class="keywordtype">double</span> *x,<span class="keywordtype">int</span> N);</div>
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155 <div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  </div>
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156 <div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keywordtype">double</span> calculateMeanOfArray(<span class="keywordtype">double</span> *array,<span class="keywordtype">int</span> startIndex,<span class="keywordtype">int</span> endIndex);</div>
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157 <div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  </div>
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158 <div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keywordtype">void</span> normaliseArray(<span class="keywordtype">double</span> *array,<span class="keywordtype">int</span> N);</div>
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159 <div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  </div>
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160 <div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordtype">void</span> calculateBalancedACF(<span class="keywordtype">double</span> *onsetDetectionFunction);</div>
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161 <div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  </div>
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162 <div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keywordtype">void</span> calculateOutputOfCombFilterBank();</div>
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163 <div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  </div>
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164 <div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="comment">//=======================================================================</span></div>
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165 <div class="line"><a name="l00177"></a><span class="lineno"> 177</span> </div>
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166 <div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <a class="code" href="class_onset_detection_function.html">OnsetDetectionFunction</a> odf;</div>
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167 <div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  </div>
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168 <div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="comment">//=======================================================================</span></div>
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169 <div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="comment">// buffers</span></div>
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170 <div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  </div>
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171 <div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  std::vector<double> onsetDF; </div>
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172 <div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  std::vector<double> cumulativeScore; </div>
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173 <div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keywordtype">double</span> resampledOnsetDF[512]; </div>
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174 <div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keywordtype">double</span> acf[512]; </div>
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175 <div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keywordtype">double</span> weightingVector[128]; </div>
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176 <div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keywordtype">double</span> combFilterBankOutput[128]; </div>
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177 <div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keywordtype">double</span> tempoObservationVector[41]; </div>
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178 <div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordtype">double</span> delta[41]; </div>
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179 <div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordtype">double</span> prevDelta[41]; </div>
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180 <div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordtype">double</span> prevDeltaFixed[41]; </div>
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181 <div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keywordtype">double</span> tempoTransitionMatrix[41][41]; </div>
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182 <div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="comment">//=======================================================================</span></div>
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183 <div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="comment">// parameters</span></div>
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184 <div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  </div>
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185 <div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  </div>
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186 <div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keywordtype">double</span> tightness; </div>
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187 <div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keywordtype">double</span> alpha; </div>
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188 <div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordtype">double</span> beatPeriod; </div>
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189 <div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keywordtype">double</span> tempo; </div>
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190 <div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keywordtype">double</span> estimatedTempo; </div>
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191 <div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordtype">double</span> latestCumulativeScoreValue; </div>
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192 <div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keywordtype">double</span> tempoToLagFactor; </div>
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193 <div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keywordtype">int</span> m0; </div>
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194 <div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordtype">int</span> beatCounter; </div>
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195 <div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keywordtype">int</span> hopSize; </div>
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196 <div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="keywordtype">int</span> onsetDFBufferSize; </div>
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197 <div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keywordtype">bool</span> tempoFixed; </div>
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198 <div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="keywordtype">bool</span> beatDueInFrame; </div>
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199 <div class="line"><a name="l00233"></a><span class="lineno"> 233</span> };</div>
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200 <div class="line"><a name="l00234"></a><span class="lineno"> 234</span> </div>
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201 <div class="line"><a name="l00235"></a><span class="lineno"> 235</span> <span class="preprocessor">#endif</span></div>
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202 </div><!-- fragment --></div><!-- contents -->
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203 <!-- start footer part -->
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204 <hr class="footer"/><address class="footer"><small>
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205 Generated on Tue Jan 28 2014 00:29:23 for BTrack - A Real-Time Beat Tracker by  <a href="http://www.doxygen.org/index.html">
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206 <img class="footer" src="doxygen.png" alt="doxygen"/>
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207 </a> 1.8.2
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208 </small></address>
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209 </body>
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210 </html>
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