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<TITLE>The Synthesis ToolKit in C++ (STK)</TITLE>
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<h1>HevyMetl.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef STK_HEVYMETL_H</span>
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<a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define STK_HEVYMETL_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 "FM.h"</span>
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<a name="l00005"></a>00005
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<a name="l00006"></a>00006 <span class="keyword">namespace </span>stk {
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<a name="l00007"></a>00007
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<a name="l00008"></a>00008 <span class="comment">/***************************************************/</span>
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<a name="l00036"></a>00036 <span class="comment">/***************************************************/</span>
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<a name="l00037"></a>00037
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<a name="l00038"></a><a class="code" href="classstk_1_1HevyMetl.html">00038</a> <span class="keyword">class </span><a class="code" href="classstk_1_1HevyMetl.html" title="STK heavy metal FM synthesis instrument.">HevyMetl</a> : <span class="keyword">public</span> <a class="code" href="classstk_1_1FM.html" title="STK abstract FM synthesis base class.">FM</a>
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<a name="l00039"></a>00039 {
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<a name="l00040"></a>00040 <span class="keyword">public</span>:
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<a name="l00042"></a>00042
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<a name="l00045"></a>00045 <a class="code" href="classstk_1_1HevyMetl.html#a61e000b4c2a8ba021e43e8074be44390" title="Class constructor.">HevyMetl</a>( <span class="keywordtype">void</span> );
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<a name="l00046"></a>00046
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<a name="l00048"></a>00048 <a class="code" href="classstk_1_1HevyMetl.html#a03b76a27541928bf9e7d156f9709a8f0" title="Class destructor.">~HevyMetl</a>( <span class="keywordtype">void</span> );
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<a name="l00049"></a>00049
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<a name="l00051"></a>00051 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1HevyMetl.html#aa7401a5cb44a69edaad304aac41b6eda" title="Start a note with the given frequency and amplitude.">noteOn</a>( StkFloat frequency, StkFloat amplitude );
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<a name="l00052"></a>00052
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<a name="l00054"></a>00054 StkFloat <a class="code" href="classstk_1_1HevyMetl.html#a0261504b82845034be67ac573d564ff7" 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="l00055"></a>00055
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<a name="l00057"></a>00057
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<a name="l00064"></a>00064 <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_1HevyMetl.html#a0261504b82845034be67ac573d564ff7" 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="l00065"></a>00065
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<a name="l00066"></a>00066 <span class="keyword">protected</span>:
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<a name="l00067"></a>00067
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<a name="l00068"></a>00068 };
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<a name="l00069"></a>00069
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<a name="l00070"></a><a class="code" href="classstk_1_1HevyMetl.html#a0261504b82845034be67ac573d564ff7">00070</a> <span class="keyword">inline</span> StkFloat <a class="code" href="classstk_1_1HevyMetl.html#a0261504b82845034be67ac573d564ff7" title="Compute and return one output sample.">HevyMetl :: tick</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> )
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<a name="l00071"></a>00071 {
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<a name="l00072"></a>00072 <span class="keyword">register</span> StkFloat temp;
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<a name="l00073"></a>00073
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<a name="l00074"></a>00074 temp = vibrato_.<a class="code" href="classstk_1_1SineWave.html#a31a55627bf8064919b5e063059260eda" title="Compute and return one output sample.">tick</a>() * modDepth_ * 0.2;
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<a name="l00075"></a>00075 waves_[0]->setFrequency(baseFrequency_ * (1.0 + temp) * ratios_[0]);
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<a name="l00076"></a>00076 waves_[1]->setFrequency(baseFrequency_ * (1.0 + temp) * ratios_[1]);
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<a name="l00077"></a>00077 waves_[2]->setFrequency(baseFrequency_ * (1.0 + temp) * ratios_[2]);
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<a name="l00078"></a>00078 waves_[3]->setFrequency(baseFrequency_ * (1.0 + temp) * ratios_[3]);
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<a name="l00079"></a>00079
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<a name="l00080"></a>00080 temp = gains_[2] * adsr_[2]->tick() * waves_[2]->tick();
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<a name="l00081"></a>00081 waves_[1]->addPhaseOffset( temp );
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<a name="l00082"></a>00082
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<a name="l00083"></a>00083 waves_[3]->addPhaseOffset( twozero_.<a class="code" href="classstk_1_1TwoZero.html#ae9808b0152902d0067ea24ccfba0b4ba" title="Return the last computed output value.">lastOut</a>() );
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<a name="l00084"></a>00084 temp = (1.0 - (control2_ * 0.5)) * gains_[3] * adsr_[3]-><a class="code" href="classstk_1_1HevyMetl.html#a0261504b82845034be67ac573d564ff7" title="Compute and return one output sample.">tick</a>() * waves_[3]->tick();
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<a name="l00085"></a>00085 twozero_.<a class="code" href="classstk_1_1TwoZero.html#acf92a66aeb2024cfcdb9d71ecadf3d82" title="Input one sample to the filter and return one output.">tick</a>(temp);
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<a name="l00086"></a>00086
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<a name="l00087"></a>00087 temp += control2_ * 0.5 * gains_[1] * adsr_[1]->tick() * waves_[1]->tick();
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<a name="l00088"></a>00088 temp = temp * control1_;
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<a name="l00089"></a>00089
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<a name="l00090"></a>00090 waves_[0]->addPhaseOffset( temp );
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<a name="l00091"></a>00091 temp = gains_[0] * adsr_[0]->tick() * waves_[0]->tick();
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<a name="l00092"></a>00092
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<a name="l00093"></a>00093 lastFrame_[0] = temp * 0.5;
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<a name="l00094"></a>00094 <span class="keywordflow">return</span> lastFrame_[0];
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<a name="l00095"></a>00095 }
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<a name="l00096"></a>00096
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<a name="l00097"></a><a class="code" href="classstk_1_1HevyMetl.html#a555f3bf9322fd11150b00bb99476769a">00097</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_1HevyMetl.html#a0261504b82845034be67ac573d564ff7" title="Compute and return one output sample.">HevyMetl :: 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="l00098"></a>00098 {
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<a name="l00099"></a>00099 <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="l00100"></a>00100 <span class="preprocessor">#if defined(_STK_DEBUG_)</span>
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<a name="l00101"></a>00101 <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="l00102"></a>00102 oStream_ << <span class="stringliteral">"HevyMetl::tick(): channel and StkFrames arguments are incompatible!"</span>;
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<a name="l00103"></a>00103 <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="l00104"></a>00104 }
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<a name="l00105"></a>00105 <span class="preprocessor">#endif</span>
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<a name="l00106"></a>00106 <span class="preprocessor"></span>
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<a name="l00107"></a>00107 StkFloat *samples = &frames[channel];
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<a name="l00108"></a>00108 <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="l00109"></a>00109 <span class="keywordflow">if</span> ( nChannels == 1 ) {
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<a name="l00110"></a>00110 <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="l00111"></a>00111 *samples++ = <a class="code" href="classstk_1_1HevyMetl.html#a0261504b82845034be67ac573d564ff7" title="Compute and return one output sample.">tick</a>();
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<a name="l00112"></a>00112 }
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<a name="l00113"></a>00113 <span class="keywordflow">else</span> {
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<a name="l00114"></a>00114 <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="l00115"></a>00115 *samples++ = <a class="code" href="classstk_1_1HevyMetl.html#a0261504b82845034be67ac573d564ff7" title="Compute and return one output sample.">tick</a>();
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<a name="l00116"></a>00116 <span class="keywordflow">for</span> ( j=1; j<nChannels; j++ )
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<a name="l00117"></a>00117 *samples++ = lastFrame_[j];
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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
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<a name="l00121"></a>00121 <span class="keywordflow">return</span> frames;
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<a name="l00122"></a>00122 }
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<a name="l00123"></a>00123
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<a name="l00124"></a>00124 } <span class="comment">// stk namespace</span>
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<a name="l00125"></a>00125
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<a name="l00126"></a>00126 <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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