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<h1>Saxofony.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef STK_SAXOFONY_H</span>
<a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define STK_SAXOFONY_H</span>
<a name="l00003"></a>00003 <span class="preprocessor"></span>
<a name="l00004"></a>00004 <span class="preprocessor">#include "Instrmnt.h"</span>
<a name="l00005"></a>00005 <span class="preprocessor">#include "DelayL.h"</span>
<a name="l00006"></a>00006 <span class="preprocessor">#include "ReedTable.h"</span>
<a name="l00007"></a>00007 <span class="preprocessor">#include "OneZero.h"</span>
<a name="l00008"></a>00008 <span class="preprocessor">#include "Envelope.h"</span>
<a name="l00009"></a>00009 <span class="preprocessor">#include "Noise.h"</span>
<a name="l00010"></a>00010 <span class="preprocessor">#include "SineWave.h"</span>
<a name="l00011"></a>00011
<a name="l00012"></a>00012 <span class="keyword">namespace </span>stk {
<a name="l00013"></a>00013
<a name="l00014"></a>00014 <span class="comment">/***************************************************/</span>
<a name="l00049"></a>00049 <span class="comment">/***************************************************/</span>
<a name="l00050"></a>00050
<a name="l00051"></a><a class="code" href="classstk_1_1Saxofony.html">00051</a> <span class="keyword">class </span><a class="code" href="classstk_1_1Saxofony.html" title="STK faux conical bore reed instrument class.">Saxofony</a> : <span class="keyword">public</span> <a class="code" href="classstk_1_1Instrmnt.html" title="STK instrument abstract base class.">Instrmnt</a>
<a name="l00052"></a>00052 {
<a name="l00053"></a>00053 <span class="keyword">public</span>:
<a name="l00055"></a>00055
<a name="l00058"></a>00058 <a class="code" href="classstk_1_1Saxofony.html#a15984d74213308e0d81d1ee32d99ee76" title="Class constructor, taking the lowest desired playing frequency.">Saxofony</a>( StkFloat lowestFrequency );
<a name="l00059"></a>00059
<a name="l00061"></a>00061 <a class="code" href="classstk_1_1Saxofony.html#a1ff6a35de027e292c8a693aac314720d" title="Class destructor.">~Saxofony</a>( <span class="keywordtype">void</span> );
<a name="l00062"></a>00062
<a name="l00064"></a>00064 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Saxofony.html#ac74981cfa3b36ec1288eccab6aa80210" title="Reset and clear all internal state.">clear</a>( <span class="keywordtype">void</span> );
<a name="l00065"></a>00065
<a name="l00067"></a>00067 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Saxofony.html#a5844455497f50e4b64beb23f275ac8d1" title="Set instrument parameters for a particular frequency.">setFrequency</a>( StkFloat frequency );
<a name="l00068"></a>00068
<a name="l00070"></a>00070 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Saxofony.html#aeccfcfe10cef314cedf727ed5ba9d3d5" title="Set the &quot;blowing&quot; position between the air column terminations (0.0 - 1...">setBlowPosition</a>( StkFloat aPosition );
<a name="l00071"></a>00071
<a name="l00073"></a>00073 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Saxofony.html#a6e46b18ad2f992dfc3d948f966ec1bf2" title="Apply breath pressure to instrument with given amplitude and rate of increase.">startBlowing</a>( StkFloat amplitude, StkFloat rate );
<a name="l00074"></a>00074
<a name="l00076"></a>00076 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Saxofony.html#ae792c62c3bcf2fe756387c1f5cd61794" title="Decrease breath pressure with given rate of decrease.">stopBlowing</a>( StkFloat rate );
<a name="l00077"></a>00077
<a name="l00079"></a>00079 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Saxofony.html#a924eed4733c9ecfd0e4de44f69011ea5" title="Start a note with the given frequency and amplitude.">noteOn</a>( StkFloat frequency, StkFloat amplitude );
<a name="l00080"></a>00080
<a name="l00082"></a>00082 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Saxofony.html#aa930437a8044fc01dc906d79a482894c" title="Stop a note with the given amplitude (speed of decay).">noteOff</a>( StkFloat amplitude );
<a name="l00083"></a>00083
<a name="l00085"></a>00085 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Saxofony.html#a38efe138bea7af7aeab3652bf0a305ff" title="Perform the control change specified by number and value (0.0 - 128.0).">controlChange</a>( <span class="keywordtype">int</span> number, StkFloat value );
<a name="l00086"></a>00086
<a name="l00088"></a>00088 StkFloat <a class="code" href="classstk_1_1Saxofony.html#a955d2ea0b3236039851d19b681ca2b0f" title="Compute and return one output sample.">tick</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel = 0 );
<a name="l00089"></a>00089
<a name="l00091"></a>00091
<a name="l00098"></a>00098 <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_1Saxofony.html#a955d2ea0b3236039851d19b681ca2b0f" 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 );
<a name="l00099"></a>00099
<a name="l00100"></a>00100 <span class="keyword">protected</span>:
<a name="l00101"></a>00101
<a name="l00102"></a>00102 <a class="code" href="classstk_1_1DelayL.html" title="STK linear interpolating delay line class.">DelayL</a> delays_[2];
<a name="l00103"></a>00103 <a class="code" href="classstk_1_1ReedTable.html" title="STK reed table class.">ReedTable</a> reedTable_;
<a name="l00104"></a>00104 <a class="code" href="classstk_1_1OneZero.html" title="STK one-zero filter class.">OneZero</a> filter_;
<a name="l00105"></a>00105 <a class="code" href="classstk_1_1Envelope.html" title="STK linear line envelope class.">Envelope</a> envelope_;
<a name="l00106"></a>00106 <a class="code" href="classstk_1_1Noise.html" title="STK noise generator.">Noise</a> noise_;
<a name="l00107"></a>00107 <a class="code" href="classstk_1_1SineWave.html" title="STK sinusoid oscillator class.">SineWave</a> vibrato_;
<a name="l00108"></a>00108
<a name="l00109"></a>00109 StkFloat outputGain_;
<a name="l00110"></a>00110 StkFloat noiseGain_;
<a name="l00111"></a>00111 StkFloat vibratoGain_;
<a name="l00112"></a>00112 StkFloat position_;
<a name="l00113"></a>00113
<a name="l00114"></a>00114 };
<a name="l00115"></a>00115
<a name="l00116"></a><a class="code" href="classstk_1_1Saxofony.html#a955d2ea0b3236039851d19b681ca2b0f">00116</a> <span class="keyword">inline</span> StkFloat <a class="code" href="classstk_1_1Saxofony.html#a955d2ea0b3236039851d19b681ca2b0f" title="Compute and return one output sample.">Saxofony :: tick</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> )
<a name="l00117"></a>00117 {
<a name="l00118"></a>00118 StkFloat pressureDiff;
<a name="l00119"></a>00119 StkFloat breathPressure;
<a name="l00120"></a>00120 StkFloat temp;
<a name="l00121"></a>00121
<a name="l00122"></a>00122 <span class="comment">// Calculate the breath pressure (envelope + noise + vibrato)</span>
<a name="l00123"></a>00123 breathPressure = envelope_.<a class="code" href="classstk_1_1Envelope.html#a8de91b9caf10a03f52bd2247648c4601" title="Compute and return one output sample.">tick</a>();
<a name="l00124"></a>00124 breathPressure += breathPressure * noiseGain_ * noise_.<a class="code" href="classstk_1_1Noise.html#a8ac40f69475eb744e803d557e8438a6d" title="Compute and return one output sample.">tick</a>();
<a name="l00125"></a>00125 breathPressure += breathPressure * vibratoGain_ * vibrato_.<a class="code" href="classstk_1_1SineWave.html#a31a55627bf8064919b5e063059260eda" title="Compute and return one output sample.">tick</a>();
<a name="l00126"></a>00126
<a name="l00127"></a>00127 temp = -0.95 * filter_.<a class="code" href="classstk_1_1OneZero.html#a9f52fa395257b15cb7351c6ccb2199da" title="Input one sample to the filter and return one output.">tick</a>( delays_[0].<a class="code" href="classstk_1_1Instrmnt.html#aaa6bd5e4a5be7f9b0be967daf012872e" title="Return the specified channel value of the last computed frame.">lastOut</a>() );
<a name="l00128"></a>00128 lastFrame_[0] = temp - delays_[1].<a class="code" href="classstk_1_1DelayL.html#a16810ca38fab79276bb8ec51447623a9" title="Return the last computed output value.">lastOut</a>();
<a name="l00129"></a>00129 pressureDiff = breathPressure - lastFrame_[0];
<a name="l00130"></a>00130 delays_[1].<a class="code" href="classstk_1_1DelayL.html#a1d01bbaf40cc20a0b70241bb8072da7f" title="Input one sample to the filter and return one output.">tick</a>( temp );
<a name="l00131"></a>00131 delays_[0].<a class="code" href="classstk_1_1DelayL.html#a1d01bbaf40cc20a0b70241bb8072da7f" title="Input one sample to the filter and return one output.">tick</a>( breathPressure - (pressureDiff * reedTable_.<a class="code" href="classstk_1_1ReedTable.html#a3c1607ed5712e2ab010d8c5e55e431f2" title="Take one sample input and map to one sample of output.">tick</a>(pressureDiff)) - temp );
<a name="l00132"></a>00132
<a name="l00133"></a>00133 lastFrame_[0] *= outputGain_;
<a name="l00134"></a>00134 <span class="keywordflow">return</span> lastFrame_[0];
<a name="l00135"></a>00135 }
<a name="l00136"></a>00136
<a name="l00137"></a><a class="code" href="classstk_1_1Saxofony.html#a98c686337ea0c2be7683ddc569bb0a1d">00137</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_1Saxofony.html#a955d2ea0b3236039851d19b681ca2b0f" title="Compute and return one output sample.">Saxofony :: 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 )
<a name="l00138"></a>00138 {
<a name="l00139"></a>00139 <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>();
<a name="l00140"></a>00140 <span class="preprocessor">#if defined(_STK_DEBUG_)</span>
<a name="l00141"></a>00141 <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 ) {
<a name="l00142"></a>00142 oStream_ << <span class="stringliteral">"Saxofony::tick(): channel and StkFrames arguments are incompatible!"</span>;
<a name="l00143"></a>00143 <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 );
<a name="l00144"></a>00144 }
<a name="l00145"></a>00145 <span class="preprocessor">#endif</span>
<a name="l00146"></a>00146 <span class="preprocessor"></span>
<a name="l00147"></a>00147 StkFloat *samples = &frames[channel];
<a name="l00148"></a>00148 <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;
<a name="l00149"></a>00149 <span class="keywordflow">if</span> ( nChannels == 1 ) {
<a name="l00150"></a>00150 <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 )
<a name="l00151"></a>00151 *samples++ = <a class="code" href="classstk_1_1Saxofony.html#a955d2ea0b3236039851d19b681ca2b0f" title="Compute and return one output sample.">tick</a>();
<a name="l00152"></a>00152 }
<a name="l00153"></a>00153 <span class="keywordflow">else</span> {
<a name="l00154"></a>00154 <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 ) {
<a name="l00155"></a>00155 *samples++ = <a class="code" href="classstk_1_1Saxofony.html#a955d2ea0b3236039851d19b681ca2b0f" title="Compute and return one output sample.">tick</a>();
<a name="l00156"></a>00156 <span class="keywordflow">for</span> ( j=1; j<nChannels; j++ )
<a name="l00157"></a>00157 *samples++ = lastFrame_[j];
<a name="l00158"></a>00158 }
<a name="l00159"></a>00159 }
<a name="l00160"></a>00160
<a name="l00161"></a>00161 <span class="keywordflow">return</span> frames;
<a name="l00162"></a>00162 }
<a name="l00163"></a>00163
<a name="l00164"></a>00164 } <span class="comment">// stk namespace</span>
<a name="l00165"></a>00165
<a name="l00166"></a>00166 <span class="preprocessor">#endif</span>
</pre></div></div>
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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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