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<div class="title">SimpleEnvelope.cpp</div> </div>
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<div class="contents">
<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"> * Simple Envelope Detectors (source)</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"> * File : SimpleEnvelope.cpp</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * Library : SimpleSource</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * Version : 1.12</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * Implements : EnvelopeDetector, AttRelEnvelope</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * 2006, ChunkWare Music Software, OPEN-SOURCE</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * copy of this software and associated documentation files (the "Software"),</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * to deal in the Software without restriction, including without limitation</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * the rights to use, copy, modify, merge, publish, distribute, sublicense,</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * and/or sell copies of the Software, and to permit persons to whom the</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * Software is furnished to do so, subject to the following conditions:</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * The above copyright notice and this permission notice shall be included in</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * all copies or substantial portions of the Software.</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * DEALINGS IN THE SOFTWARE.</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  </div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include "SimpleEnvelope.h"</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  </div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="keyword">namespace </span>chunkware_simple</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> {</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="comment">//-------------------------------------------------------------</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="comment">// envelope detector</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="comment">//-------------------------------------------------------------</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="classchunkware__simple_1_1_envelope_detector.html#a2fdfbeca92225b4e4bfe34f51e7142f4"> 37</a></span>  <a class="code" href="classchunkware__simple_1_1_envelope_detector.html#a2fdfbeca92225b4e4bfe34f51e7142f4">EnvelopeDetector::EnvelopeDetector</a>(<span class="keywordtype">double</span> ms, <span class="keywordtype">double</span> sampleRate)</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  {</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  assert(sampleRate > 0.0);</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  assert(ms > 0.0);</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <a class="code" href="classchunkware__simple_1_1_envelope_detector.html#a5a5eecb03a9decd456c0f3b3577967bf">sampleRate_</a> = sampleRate;</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <a class="code" href="classchunkware__simple_1_1_envelope_detector.html#aafa5fe36bd0277d317f48820913f7da3">ms_</a> = ms;</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  </div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="comment">// setCoef();</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="comment">// TODO: KB avoid virtual function call in ctor</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <a class="code" href="classchunkware__simple_1_1_envelope_detector.html#ac1f547cc38f4dbc3b445211f98cf3ca0">coef_</a> = exp(-1000.0 / (<a class="code" href="classchunkware__simple_1_1_envelope_detector.html#aafa5fe36bd0277d317f48820913f7da3">ms_</a> * <a class="code" href="classchunkware__simple_1_1_envelope_detector.html#a5a5eecb03a9decd456c0f3b3577967bf">sampleRate_</a>));</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  }</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  </div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="comment">//-------------------------------------------------------------</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="classchunkware__simple_1_1_envelope_detector.html#aa447ae08e15a747b61b567cbea4289e6"> 50</a></span>  <span class="keywordtype">void</span> <a class="code" href="classchunkware__simple_1_1_envelope_detector.html#aa447ae08e15a747b61b567cbea4289e6">EnvelopeDetector::setTc</a>(<span class="keywordtype">double</span> ms)</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>  assert(ms > 0.0);</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <a class="code" href="classchunkware__simple_1_1_envelope_detector.html#aafa5fe36bd0277d317f48820913f7da3">ms_</a> = ms;</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <a class="code" href="classchunkware__simple_1_1_envelope_detector.html#aa94e65808ee23f0a5a34fb1c9e44a0a2">setCoef</a>();</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  }</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  </div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="comment">//-------------------------------------------------------------</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="classchunkware__simple_1_1_envelope_detector.html#a7a21ca55dbae891713e16ac87a99dad6"> 58</a></span>  <span class="keywordtype">void</span> <a class="code" href="classchunkware__simple_1_1_envelope_detector.html#a7a21ca55dbae891713e16ac87a99dad6">EnvelopeDetector::setSampleRate</a>(<span class="keywordtype">double</span> sampleRate)</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  {</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  assert(sampleRate > 0.0);</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <a class="code" href="classchunkware__simple_1_1_envelope_detector.html#a5a5eecb03a9decd456c0f3b3577967bf">sampleRate_</a> = sampleRate;</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <a class="code" href="classchunkware__simple_1_1_envelope_detector.html#aa94e65808ee23f0a5a34fb1c9e44a0a2">setCoef</a>();</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  }</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  </div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="comment">//-------------------------------------------------------------</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"><a class="line" href="classchunkware__simple_1_1_envelope_detector.html#aa94e65808ee23f0a5a34fb1c9e44a0a2"> 66</a></span>  <span class="keywordtype">void</span> <a class="code" href="classchunkware__simple_1_1_envelope_detector.html#aa94e65808ee23f0a5a34fb1c9e44a0a2">EnvelopeDetector::setCoef</a>(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  {</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <a class="code" href="classchunkware__simple_1_1_envelope_detector.html#ac1f547cc38f4dbc3b445211f98cf3ca0">coef_</a> = exp(-1000.0 / (<a class="code" href="classchunkware__simple_1_1_envelope_detector.html#aafa5fe36bd0277d317f48820913f7da3">ms_</a> * <a class="code" href="classchunkware__simple_1_1_envelope_detector.html#a5a5eecb03a9decd456c0f3b3577967bf">sampleRate_</a>));</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  }</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  </div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="comment">//-------------------------------------------------------------</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="comment">// attack/release envelope</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="comment">//-------------------------------------------------------------</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"><a class="line" href="classchunkware__simple_1_1_att_rel_envelope.html#a74404c43172b375432120826a5318491"> 74</a></span>  <a class="code" href="classchunkware__simple_1_1_att_rel_envelope.html#a74404c43172b375432120826a5318491">AttRelEnvelope::AttRelEnvelope</a>(<span class="keywordtype">double</span> att_ms, <span class="keywordtype">double</span> rel_ms, <span class="keywordtype">double</span> sampleRate)</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  : att_(att_ms, sampleRate)</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  , rel_(rel_ms, sampleRate)</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  {</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  }</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  </div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="comment">//-------------------------------------------------------------</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"><a class="line" href="classchunkware__simple_1_1_att_rel_envelope.html#a2927924563b89eddb440e94e98d3226e"> 81</a></span>  <span class="keywordtype">void</span> <a class="code" href="classchunkware__simple_1_1_att_rel_envelope.html#a2927924563b89eddb440e94e98d3226e">AttRelEnvelope::setAttack</a>(<span class="keywordtype">double</span> ms)</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  {</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  att_.<a class="code" href="classchunkware__simple_1_1_envelope_detector.html#aa447ae08e15a747b61b567cbea4289e6">setTc</a>(ms);</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  }</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  </div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="comment">//-------------------------------------------------------------</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"><a class="line" href="classchunkware__simple_1_1_att_rel_envelope.html#ae3476bdb062550db8cbb532b28e81ea8"> 87</a></span>  <span class="keywordtype">void</span> <a class="code" href="classchunkware__simple_1_1_att_rel_envelope.html#ae3476bdb062550db8cbb532b28e81ea8">AttRelEnvelope::setRelease</a>(<span class="keywordtype">double</span> ms)</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  {</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  rel_.<a class="code" href="classchunkware__simple_1_1_envelope_detector.html#aa447ae08e15a747b61b567cbea4289e6">setTc</a>(ms);</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  }</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  </div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="comment">//-------------------------------------------------------------</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"><a class="line" href="classchunkware__simple_1_1_att_rel_envelope.html#acf999b59d1caf81242581b89493a58d4"> 93</a></span>  <span class="keywordtype">void</span> <a class="code" href="classchunkware__simple_1_1_att_rel_envelope.html#acf999b59d1caf81242581b89493a58d4">AttRelEnvelope::setSampleRate</a>(<span class="keywordtype">double</span> sampleRate)</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  {</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  att_.<a class="code" href="classchunkware__simple_1_1_envelope_detector.html#a7a21ca55dbae891713e16ac87a99dad6">setSampleRate</a>(sampleRate);</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  rel_.<a class="code" href="classchunkware__simple_1_1_envelope_detector.html#a7a21ca55dbae891713e16ac87a99dad6">setSampleRate</a>(sampleRate);</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  }</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  </div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> } <span class="comment">// end namespace chunkware_simple</span></div>
<div class="ttc" id="aclasschunkware__simple_1_1_att_rel_envelope_html_a2927924563b89eddb440e94e98d3226e"><div class="ttname"><a href="classchunkware__simple_1_1_att_rel_envelope.html#a2927924563b89eddb440e94e98d3226e">chunkware_simple::AttRelEnvelope::setAttack</a></div><div class="ttdeci">virtual void setAttack(double ms)</div><div class="ttdoc">Attack time constant.</div><div class="ttdef"><b>Definition:</b> <a href="_simple_envelope_8cpp_source.html#l00081">SimpleEnvelope.cpp:81</a></div></div>
<div class="ttc" id="aclasschunkware__simple_1_1_att_rel_envelope_html_a74404c43172b375432120826a5318491"><div class="ttname"><a href="classchunkware__simple_1_1_att_rel_envelope.html#a74404c43172b375432120826a5318491">chunkware_simple::AttRelEnvelope::AttRelEnvelope</a></div><div class="ttdeci">AttRelEnvelope(double att_ms=10.0, double rel_ms=100.0, double sampleRate=44100.0)</div><div class="ttdoc">Ctor.</div><div class="ttdef"><b>Definition:</b> <a href="_simple_envelope_8cpp_source.html#l00074">SimpleEnvelope.cpp:74</a></div></div>
<div class="ttc" id="aclasschunkware__simple_1_1_att_rel_envelope_html_acf999b59d1caf81242581b89493a58d4"><div class="ttname"><a href="classchunkware__simple_1_1_att_rel_envelope.html#acf999b59d1caf81242581b89493a58d4">chunkware_simple::AttRelEnvelope::setSampleRate</a></div><div class="ttdeci">virtual void setSampleRate(double sampleRate)</div><div class="ttdoc">Sample rate dependencies.</div><div class="ttdef"><b>Definition:</b> <a href="_simple_envelope_8cpp_source.html#l00093">SimpleEnvelope.cpp:93</a></div></div>
<div class="ttc" id="aclasschunkware__simple_1_1_att_rel_envelope_html_ae3476bdb062550db8cbb532b28e81ea8"><div class="ttname"><a href="classchunkware__simple_1_1_att_rel_envelope.html#ae3476bdb062550db8cbb532b28e81ea8">chunkware_simple::AttRelEnvelope::setRelease</a></div><div class="ttdeci">virtual void setRelease(double ms)</div><div class="ttdoc">Release time constant.</div><div class="ttdef"><b>Definition:</b> <a href="_simple_envelope_8cpp_source.html#l00087">SimpleEnvelope.cpp:87</a></div></div>
<div class="ttc" id="aclasschunkware__simple_1_1_envelope_detector_html_a2fdfbeca92225b4e4bfe34f51e7142f4"><div class="ttname"><a href="classchunkware__simple_1_1_envelope_detector.html#a2fdfbeca92225b4e4bfe34f51e7142f4">chunkware_simple::EnvelopeDetector::EnvelopeDetector</a></div><div class="ttdeci">EnvelopeDetector(double ms=1.0, double sampleRate=44100.0)</div><div class="ttdoc">Ctor.</div><div class="ttdef"><b>Definition:</b> <a href="_simple_envelope_8cpp_source.html#l00037">SimpleEnvelope.cpp:37</a></div></div>
<div class="ttc" id="aclasschunkware__simple_1_1_envelope_detector_html_a5a5eecb03a9decd456c0f3b3577967bf"><div class="ttname"><a href="classchunkware__simple_1_1_envelope_detector.html#a5a5eecb03a9decd456c0f3b3577967bf">chunkware_simple::EnvelopeDetector::sampleRate_</a></div><div class="ttdeci">double sampleRate_</div><div class="ttdoc">sample rate</div><div class="ttdef"><b>Definition:</b> <a href="_simple_envelope_8h_source.html#l00079">SimpleEnvelope.h:79</a></div></div>
<div class="ttc" id="aclasschunkware__simple_1_1_envelope_detector_html_a7a21ca55dbae891713e16ac87a99dad6"><div class="ttname"><a href="classchunkware__simple_1_1_envelope_detector.html#a7a21ca55dbae891713e16ac87a99dad6">chunkware_simple::EnvelopeDetector::setSampleRate</a></div><div class="ttdeci">virtual void setSampleRate(double sampleRate)</div><div class="ttdoc">set sample rate</div><div class="ttdef"><b>Definition:</b> <a href="_simple_envelope_8cpp_source.html#l00058">SimpleEnvelope.cpp:58</a></div></div>
<div class="ttc" id="aclasschunkware__simple_1_1_envelope_detector_html_aa447ae08e15a747b61b567cbea4289e6"><div class="ttname"><a href="classchunkware__simple_1_1_envelope_detector.html#aa447ae08e15a747b61b567cbea4289e6">chunkware_simple::EnvelopeDetector::setTc</a></div><div class="ttdeci">virtual void setTc(double ms)</div><div class="ttdoc">set time constant</div><div class="ttdef"><b>Definition:</b> <a href="_simple_envelope_8cpp_source.html#l00050">SimpleEnvelope.cpp:50</a></div></div>
<div class="ttc" id="aclasschunkware__simple_1_1_envelope_detector_html_aa94e65808ee23f0a5a34fb1c9e44a0a2"><div class="ttname"><a href="classchunkware__simple_1_1_envelope_detector.html#aa94e65808ee23f0a5a34fb1c9e44a0a2">chunkware_simple::EnvelopeDetector::setCoef</a></div><div class="ttdeci">virtual void setCoef(void)</div><div class="ttdoc">Set coefficients.</div><div class="ttdef"><b>Definition:</b> <a href="_simple_envelope_8cpp_source.html#l00066">SimpleEnvelope.cpp:66</a></div></div>
<div class="ttc" id="aclasschunkware__simple_1_1_envelope_detector_html_aafa5fe36bd0277d317f48820913f7da3"><div class="ttname"><a href="classchunkware__simple_1_1_envelope_detector.html#aafa5fe36bd0277d317f48820913f7da3">chunkware_simple::EnvelopeDetector::ms_</a></div><div class="ttdeci">double ms_</div><div class="ttdoc">time constant in ms</div><div class="ttdef"><b>Definition:</b> <a href="_simple_envelope_8h_source.html#l00080">SimpleEnvelope.h:80</a></div></div>
<div class="ttc" id="aclasschunkware__simple_1_1_envelope_detector_html_ac1f547cc38f4dbc3b445211f98cf3ca0"><div class="ttname"><a href="classchunkware__simple_1_1_envelope_detector.html#ac1f547cc38f4dbc3b445211f98cf3ca0">chunkware_simple::EnvelopeDetector::coef_</a></div><div class="ttdeci">double coef_</div><div class="ttdoc">runtime coefficient</div><div class="ttdef"><b>Definition:</b> <a href="_simple_envelope_8h_source.html#l00081">SimpleEnvelope.h:81</a></div></div>
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