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<TITLE>The Synthesis ToolKit in C++ (STK)</TITLE>
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<h1>Moog.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef STK_MOOG_H</span>
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<a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define STK_MOOG_H</span>
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<a name="l00003"></a>00003 <span class="preprocessor"></span>
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<a name="l00004"></a>00004 <span class="preprocessor">#include "Sampler.h"</span>
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<a name="l00005"></a>00005 <span class="preprocessor">#include "FormSwep.h"</span>
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<a name="l00006"></a>00006
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<a name="l00007"></a>00007 <span class="keyword">namespace </span>stk {
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<a name="l00008"></a>00008
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<a name="l00009"></a>00009 <span class="comment">/***************************************************/</span>
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<a name="l00027"></a>00027 <span class="comment">/***************************************************/</span>
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<a name="l00028"></a>00028
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<a name="l00029"></a><a class="code" href="classstk_1_1Moog.html">00029</a> <span class="keyword">class </span><a class="code" href="classstk_1_1Moog.html" title="STK moog-like swept filter sampling synthesis class.">Moog</a> : <span class="keyword">public</span> <a class="code" href="classstk_1_1Sampler.html" title="STK sampling synthesis abstract base class.">Sampler</a>
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<a name="l00030"></a>00030 {
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<a name="l00031"></a>00031 <span class="keyword">public</span>:
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<a name="l00033"></a>00033
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<a name="l00036"></a>00036 <a class="code" href="classstk_1_1Moog.html#a07c8d02638711d5f08a3b320b7274156" title="Class constructor.">Moog</a>( <span class="keywordtype">void</span> );
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<a name="l00037"></a>00037
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<a name="l00039"></a>00039 <a class="code" href="classstk_1_1Moog.html#ac05815f49aab07e01ff0d4e5e8c4edba" title="Class destructor.">~Moog</a>( <span class="keywordtype">void</span> );
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<a name="l00040"></a>00040
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<a name="l00042"></a>00042 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Moog.html#ab0d66174dd734d55ef7224d6d8f2cb06" title="Set instrument parameters for a particular frequency.">setFrequency</a>( StkFloat frequency );
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<a name="l00043"></a>00043
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<a name="l00045"></a>00045 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Moog.html#a899bc1c5c76fb29875d4df4ce594d44e" title="Start a note with the given frequency and amplitude.">noteOn</a>( StkFloat frequency, StkFloat amplitude );
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<a name="l00046"></a>00046
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<a name="l00048"></a><a class="code" href="classstk_1_1Moog.html#afeb63bf762f07851db22ae5bf18f0a81">00048</a> <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Moog.html#afeb63bf762f07851db22ae5bf18f0a81" title="Set the modulation (vibrato) speed in Hz.">setModulationSpeed</a>( StkFloat mSpeed ) { loops_[1]->setFrequency( mSpeed ); };
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<a name="l00049"></a>00049
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<a name="l00051"></a><a class="code" href="classstk_1_1Moog.html#a32e5ee083d5d92494bbe9fac43c2070f">00051</a> <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Moog.html#a32e5ee083d5d92494bbe9fac43c2070f" title="Set the modulation (vibrato) depth.">setModulationDepth</a>( StkFloat mDepth ) { modDepth_ = mDepth * 0.5; };
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<a name="l00052"></a>00052
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<a name="l00054"></a>00054 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Moog.html#acadb54eccab35e3b18b62ffd96c18ac4" title="Perform the control change specified by number and value (0.0 - 128.0).">controlChange</a>( <span class="keywordtype">int</span> number, StkFloat value );
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<a name="l00055"></a>00055
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<a name="l00057"></a>00057 StkFloat <a class="code" href="classstk_1_1Moog.html#ab9635044198c12a5c1b5dbb94245ab5a" title="Compute and return one output sample.">tick</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel = 0 );
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<a name="l00058"></a>00058
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<a name="l00060"></a>00060
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<a name="l00067"></a>00067 <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& <a class="code" href="classstk_1_1Moog.html#ab9635044198c12a5c1b5dbb94245ab5a" title="Compute and return one output sample.">tick</a>( <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& frames, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel = 0 );
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<a name="l00068"></a>00068
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<a name="l00069"></a>00069 <span class="keyword">protected</span>:
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<a name="l00070"></a>00070
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<a name="l00071"></a>00071 <a class="code" href="classstk_1_1FormSwep.html" title="STK sweepable formant filter class.">FormSwep</a> filters_[2];
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<a name="l00072"></a>00072 StkFloat modDepth_;
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<a name="l00073"></a>00073 StkFloat filterQ_;
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<a name="l00074"></a>00074 StkFloat filterRate_;
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<a name="l00075"></a>00075
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<a name="l00076"></a>00076 };
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<a name="l00077"></a>00077
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<a name="l00078"></a><a class="code" href="classstk_1_1Moog.html#ab9635044198c12a5c1b5dbb94245ab5a">00078</a> <span class="keyword">inline</span> StkFloat <a class="code" href="classstk_1_1Moog.html#ab9635044198c12a5c1b5dbb94245ab5a" title="Compute and return one output sample.">Moog :: tick</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> )
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<a name="l00079"></a>00079 {
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<a name="l00080"></a>00080 StkFloat temp;
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<a name="l00081"></a>00081
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<a name="l00082"></a>00082 <span class="keywordflow">if</span> ( modDepth_ != 0.0 ) {
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<a name="l00083"></a>00083 temp = loops_[1]->tick() * modDepth_;
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<a name="l00084"></a>00084 loops_[0]->setFrequency( baseFrequency_ * (1.0 + temp) );
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<a name="l00085"></a>00085 }
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<a name="l00086"></a>00086
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<a name="l00087"></a>00087 temp = attackGain_ * attacks_[0]->tick();
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<a name="l00088"></a>00088 temp += loopGain_ * loops_[0]->tick();
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<a name="l00089"></a>00089 temp = filter_.<a class="code" href="classstk_1_1OnePole.html#a3c83b6d43f76bec06f11caa9de76881e" title="Input one sample to the filter and return one output.">tick</a>( temp );
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<a name="l00090"></a>00090 temp *= adsr_.<a class="code" href="classstk_1_1ADSR.html#af2c0869f86210a55f4f668172373c975" title="Compute and return one output sample.">tick</a>();
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<a name="l00091"></a>00091 temp = filters_[0].<a class="code" href="classstk_1_1FormSwep.html#aba0d15e1d102cb0fee0806e1bb05c774" title="Input one sample to the filter and return a reference to one output.">tick</a>( temp );
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<a name="l00092"></a>00092 lastFrame_[0] = filters_[1].<a class="code" href="classstk_1_1FormSwep.html#aba0d15e1d102cb0fee0806e1bb05c774" title="Input one sample to the filter and return a reference to one output.">tick</a>( temp );
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<a name="l00093"></a>00093 <span class="keywordflow">return</span> lastFrame_[0] * 6.0;
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<a name="l00094"></a>00094 }
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<a name="l00095"></a>00095
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<a name="l00096"></a><a class="code" href="classstk_1_1Moog.html#aee6aa6373c424e941f963b2709310f4e">00096</a> <span class="keyword">inline</span> <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& <a class="code" href="classstk_1_1Moog.html#ab9635044198c12a5c1b5dbb94245ab5a" title="Compute and return one output sample.">Moog :: tick</a>( <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& frames, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel )
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<a name="l00097"></a>00097 {
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<a name="l00098"></a>00098 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> nChannels = lastFrame_.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>();
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<a name="l00099"></a>00099 <span class="preprocessor">#if defined(_STK_DEBUG_)</span>
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<a name="l00100"></a>00100 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( channel > frames.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>() - nChannels ) {
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<a name="l00101"></a>00101 oStream_ << <span class="stringliteral">"Moog::tick(): channel and StkFrames arguments are incompatible!"</span>;
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<a name="l00102"></a>00102 <a class="code" href="classstk_1_1Stk.html#a48ac73a0d8ca28445ba1a054e1f061ff" title="Static function for error reporting and handling using c-strings.">handleError</a>( StkError::FUNCTION_ARGUMENT );
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<a name="l00103"></a>00103 }
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<a name="l00104"></a>00104 <span class="preprocessor">#endif</span>
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<a name="l00105"></a>00105 <span class="preprocessor"></span>
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<a name="l00106"></a>00106 StkFloat *samples = &frames[channel];
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<a name="l00107"></a>00107 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> j, hop = frames.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>() - nChannels;
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<a name="l00108"></a>00108 <span class="keywordflow">if</span> ( nChannels == 1 ) {
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<a name="l00109"></a>00109 <span class="keywordflow">for</span> ( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0; i<frames.<a class="code" href="classstk_1_1StkFrames.html#a05b1ab6fa750a8221a7d65c30e0cdab9" title="Return the number of sample frames represented by the data.">frames</a>(); i++, samples += hop )
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<a name="l00110"></a>00110 *samples++ = <a class="code" href="classstk_1_1Moog.html#ab9635044198c12a5c1b5dbb94245ab5a" title="Compute and return one output sample.">tick</a>();
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<a name="l00111"></a>00111 }
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<a name="l00112"></a>00112 <span class="keywordflow">else</span> {
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<a name="l00113"></a>00113 <span class="keywordflow">for</span> ( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0; i<frames.<a class="code" href="classstk_1_1StkFrames.html#a05b1ab6fa750a8221a7d65c30e0cdab9" title="Return the number of sample frames represented by the data.">frames</a>(); i++, samples += hop ) {
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<a name="l00114"></a>00114 *samples++ = <a class="code" href="classstk_1_1Moog.html#ab9635044198c12a5c1b5dbb94245ab5a" title="Compute and return one output sample.">tick</a>();
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<a name="l00115"></a>00115 <span class="keywordflow">for</span> ( j=1; j<nChannels; j++ )
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<a name="l00116"></a>00116 *samples++ = lastFrame_[j];
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<a name="l00117"></a>00117 }
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<a name="l00118"></a>00118 }
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<a name="l00119"></a>00119
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<a name="l00120"></a>00120 <span class="keywordflow">return</span> frames;
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<a name="l00121"></a>00121 }
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<a name="l00122"></a>00122
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<a name="l00123"></a>00123 } <span class="comment">// stk namespace</span>
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<a name="l00124"></a>00124
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<a name="l00125"></a>00125 <span class="preprocessor">#endif</span>
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</pre></div></div>
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<table>
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<tr><td><A HREF="http://ccrma.stanford.edu/software/stk/"><I>The Synthesis ToolKit in C++ (STK)</I></A></td></tr>
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<tr><td>©1995-2012 Perry R. Cook and Gary P. Scavone. All Rights Reserved.</td></tr>
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