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<title>Audaspace: ButterworthCalculator Class Reference</title>
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<div id="projectname">Audaspace
 <span id="projectnumber">1.3.0</span>
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<div id="projectbrief">A high level audio library.</div>
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<a href="#pub-methods">Public Member Functions</a> |
<a href="classButterworthCalculator-members.html">List of all members</a> </div>
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<div class="title">ButterworthCalculator Class Reference</div> </div>
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<p>The <a class="el" href="classButterworthCalculator.html" title="The ButterworthCalculator class calculates fourth order Butterworth low pass filter coefficients for ...">ButterworthCalculator</a> class calculates fourth order <a class="el" href="classButterworth.html" title="This sound creates a butterworth lowpass filter reader.">Butterworth</a> low pass filter coefficients for a dynamic <a class="el" href="classDynamicIIRFilter.html" title="This sound creates a IIR filter reader.">DynamicIIRFilter</a>.
<a href="classButterworthCalculator.html#details">More...</a></p>
<p><code>#include <<a class="el" href="ButterworthCalculator_8h_source.html">ButterworthCalculator.h</a>></code></p>
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Inheritance diagram for ButterworthCalculator:</div>
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<div class="center"><img src="classButterworthCalculator__inherit__graph.png" border="0" usemap="#ButterworthCalculator_inherit__map" alt="Inheritance graph"/></div>
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<area shape="rect" title="The ButterworthCalculator class calculates fourth order Butterworth low pass filter coefficients for ..." alt="" coords="21,80,179,107"/>
<area shape="rect" href="classIDynamicIIRFilterCalculator.html" title="This interface calculates dynamic filter coefficients which depend on the sampling rate for DynamicII..." alt="" coords="5,5,195,32"/>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a550e2606d8b3e7375ecf1edcef92757b"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classButterworthCalculator.html#a550e2606d8b3e7375ecf1edcef92757b">ButterworthCalculator</a> (float frequency)</td></tr>
<tr class="memdesc:a550e2606d8b3e7375ecf1edcef92757b"><td class="mdescLeft"> </td><td class="mdescRight">Creates a <a class="el" href="classButterworthCalculator.html" title="The ButterworthCalculator class calculates fourth order Butterworth low pass filter coefficients for ...">ButterworthCalculator</a> object. <a href="#a550e2606d8b3e7375ecf1edcef92757b">More...</a><br /></td></tr>
<tr class="separator:a550e2606d8b3e7375ecf1edcef92757b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3a6b322d4e11ab38554b4af842656e54"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classButterworthCalculator.html#a3a6b322d4e11ab38554b4af842656e54">recalculateCoefficients</a> (<a class="el" href="Specification_8h.html#a11249ca544d179e7fa61b2200a092407">SampleRate</a> rate, std::vector< float > &b, std::vector< float > &a)</td></tr>
<tr class="memdesc:a3a6b322d4e11ab38554b4af842656e54"><td class="mdescLeft"> </td><td class="mdescRight">Recalculates the filter coefficients. <a href="#a3a6b322d4e11ab38554b4af842656e54">More...</a><br /></td></tr>
<tr class="separator:a3a6b322d4e11ab38554b4af842656e54"><td class="memSeparator" colspan="2"> </td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>The <a class="el" href="classButterworthCalculator.html" title="The ButterworthCalculator class calculates fourth order Butterworth low pass filter coefficients for ...">ButterworthCalculator</a> class calculates fourth order <a class="el" href="classButterworth.html" title="This sound creates a butterworth lowpass filter reader.">Butterworth</a> low pass filter coefficients for a dynamic <a class="el" href="classDynamicIIRFilter.html" title="This sound creates a IIR filter reader.">DynamicIIRFilter</a>. </p>
</div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
<a id="a550e2606d8b3e7375ecf1edcef92757b"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a550e2606d8b3e7375ecf1edcef92757b">◆ </a></span>ButterworthCalculator()</h2>
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<td class="memname">ButterworthCalculator::ButterworthCalculator </td>
<td>(</td>
<td class="paramtype">float </td>
<td class="paramname"><em>frequency</em></td><td>)</td>
<td></td>
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<p>Creates a <a class="el" href="classButterworthCalculator.html" title="The ButterworthCalculator class calculates fourth order Butterworth low pass filter coefficients for ...">ButterworthCalculator</a> object. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">frequency</td><td>The cutoff frequency. </td></tr>
</table>
</dd>
</dl>
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<h2 class="groupheader">Member Function Documentation</h2>
<a id="a3a6b322d4e11ab38554b4af842656e54"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a3a6b322d4e11ab38554b4af842656e54">◆ </a></span>recalculateCoefficients()</h2>
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<td class="memname">virtual void ButterworthCalculator::recalculateCoefficients </td>
<td>(</td>
<td class="paramtype"><a class="el" href="Specification_8h.html#a11249ca544d179e7fa61b2200a092407">SampleRate</a> </td>
<td class="paramname"><em>rate</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">std::vector< float > & </td>
<td class="paramname"><em>b</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">std::vector< float > & </td>
<td class="paramname"><em>a</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">virtual</span></span> </td>
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<p>Recalculates the filter coefficients. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir"></td><td class="paramname">rate</td><td>The sample rate of the audio data. </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">b</td><td>The input filter coefficients. </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">a</td><td>The output filter coefficients. </td></tr>
</table>
</dd>
</dl>
<p>Implements <a class="el" href="classIDynamicIIRFilterCalculator.html#afebd85d3ffa796fe683c153da50a3638">IDynamicIIRFilterCalculator</a>.</p>
</div>
</div>
<hr/>The documentation for this class was generated from the following file:<ul>
<li>fx/<a class="el" href="ButterworthCalculator_8h_source.html">ButterworthCalculator.h</a></li>
</ul>
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