<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <meta http-equiv="X-UA-Compatible" content="IE=9"/> <meta name="generator" content="Doxygen 1.8.15"/> <meta name="viewport" content="width=device-width, initial-scale=1"/> <title>Audaspace: fx/ButterworthCalculator.h Source File</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link href="search/search.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="search/searchdata.js"></script> <script type="text/javascript" src="search/search.js"></script> <link href="doxygen.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="top"><!-- do not remove this div, it is closed by doxygen! --> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td id="projectalign" style="padding-left: 0.5em;"> <div id="projectname">Audaspace  <span id="projectnumber">1.3.0</span> </div> <div id="projectbrief">A high level audio library.</div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <!-- Generated by Doxygen 1.8.15 --> <script type="text/javascript"> /* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */ var searchBox = new SearchBox("searchBox", "search",false,'Search'); /* @license-end */ </script> <script type="text/javascript" src="menudata.js"></script> <script type="text/javascript" src="menu.js"></script> <script type="text/javascript"> /* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */ $(function() { initMenu('',true,false,'search.php','Search'); $(document).ready(function() { init_search(); }); }); /* @license-end */</script> <div id="main-nav"></div> <!-- window showing the filter options --> <div id="MSearchSelectWindow" onmouseover="return searchBox.OnSearchSelectShow()" onmouseout="return searchBox.OnSearchSelectHide()" onkeydown="return searchBox.OnSearchSelectKey(event)"> </div> <!-- iframe showing the search results (closed by default) --> <div id="MSearchResultsWindow"> <iframe src="javascript:void(0)" frameborder="0" name="MSearchResults" id="MSearchResults"> </iframe> </div> <div id="nav-path" class="navpath"> <ul> <li class="navelem"><a class="el" href="dir_49abe4789985cc6a85622e26efb335d2.html">fx</a></li> </ul> </div> </div><!-- top --> <div class="header"> <div class="headertitle"> <div class="title">ButterworthCalculator.h</div> </div> </div><!--header--> <div class="contents"> <a href="ButterworthCalculator_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><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright 2009-2016 Jörg Müller</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * Licensed under the Apache License, Version 2.0 (the "License");</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * you may not use this file except in compliance with the License.</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * You may obtain a copy of the License at</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> *</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> *</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * Unless required by applicable law or agreed to in writing, software</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * distributed under the License is distributed on an "AS IS" BASIS,</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * See the License for the specific language governing permissions and</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * limitations under the License.</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> </div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#pragma once</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include "<a class="code" href="IDynamicIIRFilterCalculator_8h.html">fx/IDynamicIIRFilterCalculator.h</a>"</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <a class="code" href="Audaspace_8h.html#acd7584504197a1397aaf57af797e1813">AUD_NAMESPACE_BEGIN</a></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00033"></a><span class="lineno"><a class="line" href="classButterworthCalculator.html"> 33</a></span> <span class="keyword">class </span><a class="code" href="Audaspace_8h.html#acd0b288d4edf8e15c0221b416faa79c6">AUD_LOCAL</a> <a class="code" href="classButterworthCalculator.html">ButterworthCalculator</a> : <span class="keyword">public</span> <a class="code" href="classIDynamicIIRFilterCalculator.html">IDynamicIIRFilterCalculator</a></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> {</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">private</span>:</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keyword">const</span> <span class="keywordtype">float</span> m_frequency;</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="comment">// delete copy constructor and operator=</span></div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <a class="code" href="classButterworthCalculator.html">ButterworthCalculator</a>(<span class="keyword">const</span> <a class="code" href="classButterworthCalculator.html">ButterworthCalculator</a>&) = <span class="keyword">delete</span>;</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <a class="code" href="classButterworthCalculator.html">ButterworthCalculator</a>& operator=(<span class="keyword">const</span> <a class="code" href="classButterworthCalculator.html">ButterworthCalculator</a>&) = <span class="keyword">delete</span>;</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <a class="code" href="classButterworthCalculator.html">ButterworthCalculator</a>(<span class="keywordtype">float</span> frequency);</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classIDynamicIIRFilterCalculator.html#afebd85d3ffa796fe683c153da50a3638">recalculateCoefficients</a>(<a class="code" href="Specification_8h.html#a11249ca544d179e7fa61b2200a092407">SampleRate</a> rate, std::vector<float> &b, std::vector<float> &a);</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span> };</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> <a class="code" href="Audaspace_8h.html#a4cf7088a9bb0256563f28fd13c80b066">AUD_NAMESPACE_END</a></div><div class="ttc" id="Audaspace_8h_html_acd7584504197a1397aaf57af797e1813"><div class="ttname"><a href="Audaspace_8h.html#acd7584504197a1397aaf57af797e1813">AUD_NAMESPACE_BEGIN</a></div><div class="ttdeci">#define AUD_NAMESPACE_BEGIN</div><div class="ttdoc">Opens the audaspace namespace aud.</div><div class="ttdef"><b>Definition:</b> Audaspace.h:116</div></div> <div class="ttc" id="Specification_8h_html_a11249ca544d179e7fa61b2200a092407"><div class="ttname"><a href="Specification_8h.html#a11249ca544d179e7fa61b2200a092407">SampleRate</a></div><div class="ttdeci">double SampleRate</div><div class="ttdoc">Sample rate type.</div><div class="ttdef"><b>Definition:</b> Specification.h:106</div></div> <div class="ttc" id="classIDynamicIIRFilterCalculator_html"><div class="ttname"><a href="classIDynamicIIRFilterCalculator.html">IDynamicIIRFilterCalculator</a></div><div class="ttdoc">This interface calculates dynamic filter coefficients which depend on the sampling rate for DynamicII...</div><div class="ttdef"><b>Definition:</b> IDynamicIIRFilterCalculator.h:36</div></div> <div class="ttc" id="classButterworthCalculator_html"><div class="ttname"><a href="classButterworthCalculator.html">ButterworthCalculator</a></div><div class="ttdoc">The ButterworthCalculator class calculates fourth order Butterworth low pass filter coefficients for ...</div><div class="ttdef"><b>Definition:</b> ButterworthCalculator.h:33</div></div> <div class="ttc" id="classIDynamicIIRFilterCalculator_html_afebd85d3ffa796fe683c153da50a3638"><div class="ttname"><a href="classIDynamicIIRFilterCalculator.html#afebd85d3ffa796fe683c153da50a3638">IDynamicIIRFilterCalculator::recalculateCoefficients</a></div><div class="ttdeci">virtual void recalculateCoefficients(SampleRate rate, std::vector< float > &b, std::vector< float > &a)=0</div><div class="ttdoc">Recalculates the filter coefficients.</div></div> <div class="ttc" id="Audaspace_8h_html_a4cf7088a9bb0256563f28fd13c80b066"><div class="ttname"><a href="Audaspace_8h.html#a4cf7088a9bb0256563f28fd13c80b066">AUD_NAMESPACE_END</a></div><div class="ttdeci">#define AUD_NAMESPACE_END</div><div class="ttdoc">Closes the audaspace namespace aud.</div><div class="ttdef"><b>Definition:</b> Audaspace.h:119</div></div> <div class="ttc" id="Audaspace_8h_html_acd0b288d4edf8e15c0221b416faa79c6"><div class="ttname"><a href="Audaspace_8h.html#acd0b288d4edf8e15c0221b416faa79c6">AUD_LOCAL</a></div><div class="ttdeci">#define AUD_LOCAL</div><div class="ttdoc">Used for hiding symbols from export in the shared library.</div><div class="ttdef"><b>Definition:</b> Audaspace.h:80</div></div> <div class="ttc" id="IDynamicIIRFilterCalculator_8h_html"><div class="ttname"><a href="IDynamicIIRFilterCalculator_8h.html">IDynamicIIRFilterCalculator.h</a></div><div class="ttdoc">The IDynamicIIRFilterCalculator interface.</div></div> </div><!-- fragment --></div><!-- contents --> <!-- 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