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<div class="header">
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<a href="#func-members">Functions</a> </div>
<div class="headertitle">
<div class="title">tDualPitchDetector<div class="ingroups"><a class="el" href="group__analysis.html">Analysis</a></div></div> </div>
</div><!--header-->
<div class="contents">
<p>Combined pitch detection algorithm using both Joel de Guzman's Q Audio DSP Library and Katya Vetters algorithms.
<a href="#details">More...</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:gae41a404e3b1463d626423aa6f4ac56a6"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__tdualpitchdetector.html#gae41a404e3b1463d626423aa6f4ac56a6">tDualPitchDetector_init</a> (tDualPitchDetector *const detector, float lowestFreq, float highestFreq, float *inBuffer, int bufSize, <a class="el" href="struct_l_e_a_f.html">LEAF</a> *const leaf)</td></tr>
<tr class="memdesc:gae41a404e3b1463d626423aa6f4ac56a6"><td class="mdescLeft"> </td><td class="mdescRight">Initialize a tDualPitchDetector to the default mempool of a <a class="el" href="struct_l_e_a_f.html" title="Struct for an instance of LEAF.">LEAF</a> instance. <a href="group__tdualpitchdetector.html#gae41a404e3b1463d626423aa6f4ac56a6">More...</a><br /></td></tr>
<tr class="separator:gae41a404e3b1463d626423aa6f4ac56a6"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaf9fbf5ecd92f356af0572600ec796556"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__tdualpitchdetector.html#gaf9fbf5ecd92f356af0572600ec796556">tDualPitchDetector_initToPool</a> (tDualPitchDetector *const detector, float lowestFreq, float highestFreq, float *inBuffer, int bufSize, tMempool *const mempool)</td></tr>
<tr class="memdesc:gaf9fbf5ecd92f356af0572600ec796556"><td class="mdescLeft"> </td><td class="mdescRight">Initialize a tDualPitchDetector to a specified mempool. <a href="group__tdualpitchdetector.html#gaf9fbf5ecd92f356af0572600ec796556">More...</a><br /></td></tr>
<tr class="separator:gaf9fbf5ecd92f356af0572600ec796556"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga0f104dc5171d8cf3cf5e01d3d52f20e4"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__tdualpitchdetector.html#ga0f104dc5171d8cf3cf5e01d3d52f20e4">tDualPitchDetector_free</a> (tDualPitchDetector *const detector)</td></tr>
<tr class="memdesc:ga0f104dc5171d8cf3cf5e01d3d52f20e4"><td class="mdescLeft"> </td><td class="mdescRight">Free a tDualPitchDetector from its mempool. <a href="group__tdualpitchdetector.html#ga0f104dc5171d8cf3cf5e01d3d52f20e4">More...</a><br /></td></tr>
<tr class="separator:ga0f104dc5171d8cf3cf5e01d3d52f20e4"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga25d99f2df26169355fda4810802f7b87"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__tdualpitchdetector.html#ga25d99f2df26169355fda4810802f7b87">tDualPitchDetector_tick</a> (tDualPitchDetector *const detector, float sample)</td></tr>
<tr class="separator:ga25d99f2df26169355fda4810802f7b87"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gae647948c3fad09263e02625d52a0f9f0"><td class="memItemLeft" align="right" valign="top">float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__tdualpitchdetector.html#gae647948c3fad09263e02625d52a0f9f0">tDualPitchDetector_getFrequency</a> (tDualPitchDetector *const detector)</td></tr>
<tr class="separator:gae647948c3fad09263e02625d52a0f9f0"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga013b0b209ac1fe9268f88ed4925c7905"><td class="memItemLeft" align="right" valign="top">float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__tdualpitchdetector.html#ga013b0b209ac1fe9268f88ed4925c7905">tDualPitchDetector_getPeriodicity</a> (tDualPitchDetector *const detector)</td></tr>
<tr class="separator:ga013b0b209ac1fe9268f88ed4925c7905"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaa80b5da1c459f61396d95066cf8fdbfe"><td class="memItemLeft" align="right" valign="top">float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__tdualpitchdetector.html#gaa80b5da1c459f61396d95066cf8fdbfe">tDualPitchDetector_harmonic</a> (tDualPitchDetector *const detector, int harmonicIndex)</td></tr>
<tr class="separator:gaa80b5da1c459f61396d95066cf8fdbfe"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gab5e594fb81c3c6e5c3f3d58a5f98c504"><td class="memItemLeft" align="right" valign="top">float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__tdualpitchdetector.html#gab5e594fb81c3c6e5c3f3d58a5f98c504">tDualPitchDetector_predictFrequency</a> (tDualPitchDetector *const detector)</td></tr>
<tr class="separator:gab5e594fb81c3c6e5c3f3d58a5f98c504"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga0a511f71335134377f4db13f9b6c311e"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__tdualpitchdetector.html#ga0a511f71335134377f4db13f9b6c311e">tDualPitchDetector_setHysteresis</a> (tDualPitchDetector *const detector, float hysteresis)</td></tr>
<tr class="memdesc:ga0a511f71335134377f4db13f9b6c311e"><td class="mdescLeft"> </td><td class="mdescRight">Set the hysteresis used in zero crossing detection. <a href="group__tdualpitchdetector.html#ga0a511f71335134377f4db13f9b6c311e">More...</a><br /></td></tr>
<tr class="separator:ga0a511f71335134377f4db13f9b6c311e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaf1a678d94ea5579c8847e8672541fecd"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__tdualpitchdetector.html#gaf1a678d94ea5579c8847e8672541fecd">tDualPitchDetector_setPeriodicityThreshold</a> (tDualPitchDetector *const detector, float thresh)</td></tr>
<tr class="memdesc:gaf1a678d94ea5579c8847e8672541fecd"><td class="mdescLeft"> </td><td class="mdescRight">Set the threshold for periodicity of a signal to be considered as pitched. <a href="group__tdualpitchdetector.html#gaf1a678d94ea5579c8847e8672541fecd">More...</a><br /></td></tr>
<tr class="separator:gaf1a678d94ea5579c8847e8672541fecd"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<p>Combined pitch detection algorithm using both Joel de Guzman's Q Audio DSP Library and Katya Vetters algorithms. </p>
<h2 class="groupheader">Function Documentation</h2>
<a id="gae41a404e3b1463d626423aa6f4ac56a6"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gae41a404e3b1463d626423aa6f4ac56a6">◆ </a></span>tDualPitchDetector_init()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void tDualPitchDetector_init </td>
<td>(</td>
<td class="paramtype">tDualPitchDetector *const </td>
<td class="paramname"><em>detector</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">float </td>
<td class="paramname"><em>lowestFreq</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">float </td>
<td class="paramname"><em>highestFreq</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">float * </td>
<td class="paramname"><em>inBuffer</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>bufSize</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="struct_l_e_a_f.html">LEAF</a> *const </td>
<td class="paramname"><em>leaf</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Initialize a tDualPitchDetector to the default mempool of a <a class="el" href="struct_l_e_a_f.html" title="Struct for an instance of LEAF.">LEAF</a> instance. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">detector</td><td>A pointer to the relevant tDualPitchDetector. </td></tr>
<tr><td class="paramname">lowestFreq</td><td></td></tr>
<tr><td class="paramname">highestFreq</td><td></td></tr>
<tr><td class="paramname">inputBuffer</td><td>A buffer of float to store input to the pitch detector. </td></tr>
<tr><td class="paramname">bufferSize</td><td>Size of the input buffer. </td></tr>
<tr><td class="paramname">leaf</td><td>A pointer to the leaf instance. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="gaf9fbf5ecd92f356af0572600ec796556"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gaf9fbf5ecd92f356af0572600ec796556">◆ </a></span>tDualPitchDetector_initToPool()</h2>
<div class="memitem">
<div class="memproto">
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<td class="memname">void tDualPitchDetector_initToPool </td>
<td>(</td>
<td class="paramtype">tDualPitchDetector *const </td>
<td class="paramname"><em>detector</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">float </td>
<td class="paramname"><em>lowestFreq</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">float </td>
<td class="paramname"><em>highestFreq</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">float * </td>
<td class="paramname"><em>inBuffer</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>bufSize</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">tMempool *const </td>
<td class="paramname"><em>mempool</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Initialize a tDualPitchDetector to a specified mempool. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">detector</td><td>A pointer to the relevant tPitchDualDetector. </td></tr>
<tr><td class="paramname">lowestFreq</td><td></td></tr>
<tr><td class="paramname">highestFreq</td><td></td></tr>
<tr><td class="paramname">inputBuffer</td><td>A buffer of float to store input to the pitch detector. </td></tr>
<tr><td class="paramname">bufferSize</td><td>Size of the input buffer. </td></tr>
<tr><td class="paramname">mempool</td><td>A pointer to the tMempool to use. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="ga0f104dc5171d8cf3cf5e01d3d52f20e4"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga0f104dc5171d8cf3cf5e01d3d52f20e4">◆ </a></span>tDualPitchDetector_free()</h2>
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<td class="memname">void tDualPitchDetector_free </td>
<td>(</td>
<td class="paramtype">tDualPitchDetector *const </td>
<td class="paramname"><em>detector</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Free a tDualPitchDetector from its mempool. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">detector</td><td>A pointer to the relevant tDualPitchDetector. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="ga25d99f2df26169355fda4810802f7b87"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga25d99f2df26169355fda4810802f7b87">◆ </a></span>tDualPitchDetector_tick()</h2>
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<td class="memname">int tDualPitchDetector_tick </td>
<td>(</td>
<td class="paramtype">tDualPitchDetector *const </td>
<td class="paramname"><em>detector</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">float </td>
<td class="paramname"><em>sample</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">detector</td><td>A pointer to the relevant tDualPitchDetector. </td></tr>
<tr><td class="paramname">input</td><td></td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="gae647948c3fad09263e02625d52a0f9f0"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gae647948c3fad09263e02625d52a0f9f0">◆ </a></span>tDualPitchDetector_getFrequency()</h2>
<div class="memitem">
<div class="memproto">
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<td class="memname">float tDualPitchDetector_getFrequency </td>
<td>(</td>
<td class="paramtype">tDualPitchDetector *const </td>
<td class="paramname"><em>detector</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">detector</td><td>A pointer to the relevant tDualPitchDetector. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The detected frequency. </dd></dl>
</div>
</div>
<a id="ga013b0b209ac1fe9268f88ed4925c7905"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga013b0b209ac1fe9268f88ed4925c7905">◆ </a></span>tDualPitchDetector_getPeriodicity()</h2>
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<td class="memname">float tDualPitchDetector_getPeriodicity </td>
<td>(</td>
<td class="paramtype">tDualPitchDetector *const </td>
<td class="paramname"><em>detector</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">detector</td><td>A pointer to the relevant tDualPitchDetector. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The periodicity of the input. </dd></dl>
</div>
</div>
<a id="gaa80b5da1c459f61396d95066cf8fdbfe"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gaa80b5da1c459f61396d95066cf8fdbfe">◆ </a></span>tDualPitchDetector_harmonic()</h2>
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<div class="memproto">
<table class="memname">
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<td class="memname">float tDualPitchDetector_harmonic </td>
<td>(</td>
<td class="paramtype">tDualPitchDetector *const </td>
<td class="paramname"><em>detector</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>harmonicIndex</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">detector</td><td>A pointer to the relevant tDualPitchDetector. </td></tr>
<tr><td class="paramname">harmonicIndex</td><td></td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd></dd></dl>
</div>
</div>
<a id="gab5e594fb81c3c6e5c3f3d58a5f98c504"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gab5e594fb81c3c6e5c3f3d58a5f98c504">◆ </a></span>tDualPitchDetector_predictFrequency()</h2>
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<div class="memproto">
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<td class="memname">float tDualPitchDetector_predictFrequency </td>
<td>(</td>
<td class="paramtype">tDualPitchDetector *const </td>
<td class="paramname"><em>detector</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">detector</td><td>A pointer to the relevant tDualPitchDetector. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The predicted frequency in Hz. </dd></dl>
</div>
</div>
<a id="ga0a511f71335134377f4db13f9b6c311e"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga0a511f71335134377f4db13f9b6c311e">◆ </a></span>tDualPitchDetector_setHysteresis()</h2>
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<td class="memname">void tDualPitchDetector_setHysteresis </td>
<td>(</td>
<td class="paramtype">tDualPitchDetector *const </td>
<td class="paramname"><em>detector</em>, </td>
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<td class="paramtype">float </td>
<td class="paramname"><em>hysteresis</em> </td>
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<p>Set the hysteresis used in zero crossing detection. </p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">detector</td><td>A pointer to the relevant tDualPitchDetector. </td></tr>
<tr><td class="paramname">hysteresis</td><td>The hysteresis in decibels. Defaults to -40db. </td></tr>
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<h2 class="memtitle"><span class="permalink"><a href="#gaf1a678d94ea5579c8847e8672541fecd">◆ </a></span>tDualPitchDetector_setPeriodicityThreshold()</h2>
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<td class="memname">void tDualPitchDetector_setPeriodicityThreshold </td>
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<td class="paramtype">tDualPitchDetector *const </td>
<td class="paramname"><em>detector</em>, </td>
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<td class="paramtype">float </td>
<td class="paramname"><em>thresh</em> </td>
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<p>Set the threshold for periodicity of a signal to be considered as pitched. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">detector</td><td>A pointer to the relevant tDualPitchDetector. </td></tr>
<tr><td class="paramname">threshold</td><td>The periodicity threshold from 0.0 to 1.0 with 1.0 being perfectly periodic.  </td></tr>
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