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Added a function to allow updates to the hop and frame size of the beat tracker
author Adam <adamstark.uk@gmail.com>
date Tue, 28 Jan 2014 00:31:17 +0000
parents deb49a2590f3
children 687b8dd41934
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<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>&#160;<span class="comment">//=======================================================================</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment"></span><span class="comment">//=======================================================================</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#ifndef __BTRACK_H</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define __BTRACK_H</span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_onset_detection_function_8h.html" title="A class for calculating onset detection functions.">OnsetDetectionFunction.h</a>&quot;</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="comment">//=======================================================================</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"><a class="code" href="class_b_track.html">   34</a></span>&#160;<span class="comment"></span><span class="keyword">class </span><a class="code" href="class_b_track.html">BTrack</a> {</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    </div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    </div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    <span class="comment">//=======================================================================</span></div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="comment"></span>    <a class="code" href="class_b_track.html#a243ac408666ce0301fecd9b0a2a6f307">BTrack</a>();</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    </div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    <a class="code" href="class_b_track.html#a243ac408666ce0301fecd9b0a2a6f307">BTrack</a>(<span class="keywordtype">int</span> hopSize_);</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    </div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    <a class="code" href="class_b_track.html#a243ac408666ce0301fecd9b0a2a6f307">BTrack</a>(<span class="keywordtype">int</span> hopSize_,<span class="keywordtype">int</span> frameSize_);</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;    </div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    <span class="comment">//=======================================================================</span></div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<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>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    </div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    <span class="comment">//=======================================================================</span></div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<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>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    </div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;    <span class="keywordtype">void</span> <a class="code" href="class_b_track.html#a6fab18732bef8c87152e93dec9e4f854">processOnsetDetectionFunctionSample</a>(<span class="keywordtype">double</span> sample);</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;   </div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    <span class="comment">//=======================================================================</span></div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;<span class="comment"></span>    <span class="keywordtype">int</span> <a class="code" href="class_b_track.html#ac06aa079977062bfa2930cdca45e69fb">getHopSize</a>();</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;    </div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;    <span class="keywordtype">bool</span> <a class="code" href="class_b_track.html#ac92eaea0e42dd18c79de10bf852d7f4a">beatDueInCurrentFrame</a>();</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    <span class="keywordtype">double</span> <a class="code" href="class_b_track.html#a17cea0a4dff3908660e4117e9a6c42bb">getCurrentTempoEstimate</a>();</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;    </div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;    <span class="keywordtype">double</span> <a class="code" href="class_b_track.html#a7ccb5059d0f00e3217ea686e4c1e156d">getLatestCumulativeScoreValue</a>();</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    </div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    <span class="comment">//=======================================================================</span></div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<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>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;    </div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;    <span class="keywordtype">void</span> <a class="code" href="class_b_track.html#a550829be9b4c58cd53195ec4900c7c71">fixTempo</a>(<span class="keywordtype">double</span> tempo);</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;    </div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;    <span class="keywordtype">void</span> <a class="code" href="class_b_track.html#a22917ea231d2efd5670a764dd5a98983">doNotFixTempo</a>();</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;    </div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;    <span class="comment">//=======================================================================</span></div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;<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>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;    </div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;    <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>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;    </div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;        </div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;    </div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;    <span class="keywordtype">void</span> initialise(<span class="keywordtype">int</span> hopSize_,<span class="keywordtype">int</span> frameSize_);</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;    </div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;    <span class="keywordtype">void</span> setHopSize(<span class="keywordtype">int</span> hopSize_);</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;    </div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;    <span class="keywordtype">void</span> resampleOnsetDetectionFunction();</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;    </div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    <span class="keywordtype">void</span> updateCumulativeScore(<span class="keywordtype">double</span> odfSample);</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;    </div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;    <span class="keywordtype">void</span> predictBeat();</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;    </div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;    <span class="keywordtype">void</span> calculateTempo();</div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;    </div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;    <span class="keywordtype">void</span> adaptiveThreshold(<span class="keywordtype">double</span> *x,<span class="keywordtype">int</span> N);</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;    </div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;    <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>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;    </div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;    <span class="keywordtype">void</span> normaliseArray(<span class="keywordtype">double</span> *array,<span class="keywordtype">int</span> N);</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;    </div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;    <span class="keywordtype">void</span> calculateBalancedACF(<span class="keywordtype">double</span> *onsetDetectionFunction);</div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;    </div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;    <span class="keywordtype">void</span> calculateOutputOfCombFilterBank();</div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;    </div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;    <span class="comment">//=======================================================================</span></div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;    <a class="code" href="class_onset_detection_function.html">OnsetDetectionFunction</a> odf;</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;    </div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;    <span class="comment">//=======================================================================</span></div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;    <span class="comment">// buffers</span></div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;    </div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;    std::vector&lt;double&gt; onsetDF;            </div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;    std::vector&lt;double&gt; cumulativeScore;    </div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;    <span class="keywordtype">double</span> resampledOnsetDF[512];           </div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;    <span class="keywordtype">double</span> acf[512];                        </div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;    <span class="keywordtype">double</span> weightingVector[128];            </div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;    <span class="keywordtype">double</span> combFilterBankOutput[128];       </div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;    <span class="keywordtype">double</span> tempoObservationVector[41];      </div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;    <span class="keywordtype">double</span> delta[41];                       </div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;    <span class="keywordtype">double</span> prevDelta[41];                   </div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;    <span class="keywordtype">double</span> prevDeltaFixed[41];              </div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;    <span class="keywordtype">double</span> tempoTransitionMatrix[41][41];   </div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;    <span class="comment">//=======================================================================</span></div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;    <span class="comment">// parameters</span></div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;    </div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;    </div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;    <span class="keywordtype">double</span> tightness;                       </div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;    <span class="keywordtype">double</span> alpha;                           </div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;    <span class="keywordtype">double</span> beatPeriod;                      </div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;    <span class="keywordtype">double</span> tempo;                           </div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;    <span class="keywordtype">double</span> estimatedTempo;                  </div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;    <span class="keywordtype">double</span> latestCumulativeScoreValue;      </div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;    <span class="keywordtype">double</span> tempoToLagFactor;                </div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;    <span class="keywordtype">int</span> m0;                                 </div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;    <span class="keywordtype">int</span> beatCounter;                        </div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;    <span class="keywordtype">int</span> hopSize;                            </div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;    <span class="keywordtype">int</span> onsetDFBufferSize;                  </div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;    <span class="keywordtype">bool</span> tempoFixed;                        </div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;    <span class="keywordtype">bool</span> beatDueInFrame;                    </div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;};</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;</div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;<span class="preprocessor">#endif</span></div>
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