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<HTML>
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<TITLE>The Synthesis ToolKit in C++ (STK)</TITLE>
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<div class="navpath"><a class="el" href="namespacestk.html">stk</a>::<a class="el" href="classstk_1_1Wurley.html">Wurley</a>
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<h1>stk::Wurley Class Reference</h1><!-- doxytag: class="stk::Wurley" --><!-- doxytag: inherits="stk::FM" -->
<p>STK Wurlitzer electric piano <a class="el" href="classstk_1_1FM.html" title="STK abstract FM synthesis base class.">FM</a> synthesis instrument.
<a href="#_details">More...</a></p>
<p><code>#include <<a class="el" href="Wurley_8h_source.html">Wurley.h</a>></code></p>
<div class="dynheader">
Inheritance diagram for stk::Wurley:</div>
<div class="dynsection">
<div class="center">
<img src="classstk_1_1Wurley.png" usemap="#stk::Wurley_map" alt=""/>
<map id="stk::Wurley_map" name="stk::Wurley_map">
<area href="classstk_1_1FM.html" alt="stk::FM" shape="rect" coords="0,112,76,136"/>
<area href="classstk_1_1Instrmnt.html" alt="stk::Instrmnt" shape="rect" coords="0,56,76,80"/>
<area href="classstk_1_1Stk.html" alt="stk::Stk" shape="rect" coords="0,0,76,24"/>
</map>
</div>
</div>
<p><a href="classstk_1_1Wurley-members.html">List of all members.</a></p>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classstk_1_1Wurley.html#afb2a68449dcd9902f0f037504387c52f">Wurley</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Class constructor. <a href="#afb2a68449dcd9902f0f037504387c52f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a6d79b2fbf627fa4f6c60f3c9d421c470"></a><!-- doxytag: member="stk::Wurley::~Wurley" ref="a6d79b2fbf627fa4f6c60f3c9d421c470" args="(void)" -->
</td><td class="memItemRight" valign="bottom"><a class="el" href="classstk_1_1Wurley.html#a6d79b2fbf627fa4f6c60f3c9d421c470">~Wurley</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Class destructor. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="af00b42ac4011cacc724bf4c9cf16fba4"></a><!-- doxytag: member="stk::Wurley::setFrequency" ref="af00b42ac4011cacc724bf4c9cf16fba4" args="(StkFloat frequency)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="classstk_1_1Wurley.html#af00b42ac4011cacc724bf4c9cf16fba4">setFrequency</a> (StkFloat frequency)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Set instrument parameters for a particular frequency. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a3cca87fdccde2306beb49a19dd19c414"></a><!-- doxytag: member="stk::Wurley::noteOn" ref="a3cca87fdccde2306beb49a19dd19c414" args="(StkFloat frequency, StkFloat amplitude)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="classstk_1_1Wurley.html#a3cca87fdccde2306beb49a19dd19c414">noteOn</a> (StkFloat frequency, StkFloat amplitude)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Start a note with the given frequency and amplitude. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a2019cfe262eb755ac939c98bda0383bd"></a><!-- doxytag: member="stk::Wurley::tick" ref="a2019cfe262eb755ac939c98bda0383bd" args="(unsigned int channel=0)" -->
StkFloat </td><td class="memItemRight" valign="bottom"><a class="el" href="classstk_1_1Wurley.html#a2019cfe262eb755ac939c98bda0383bd">tick</a> (unsigned int channel=0)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Compute and return one output sample. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classstk_1_1StkFrames.html">StkFrames</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classstk_1_1Wurley.html#a505f7e6499761f64d0cc4b6419d945c3">tick</a> (<a class="el" href="classstk_1_1StkFrames.html">StkFrames</a> &frames, unsigned int channel=0)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Fill a channel of the <a class="el" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a> object with computed outputs. <a href="#a505f7e6499761f64d0cc4b6419d945c3"></a><br/></td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>STK Wurlitzer electric piano <a class="el" href="classstk_1_1FM.html" title="STK abstract FM synthesis base class.">FM</a> synthesis instrument. </p>
<p>This class implements two simple <a class="el" href="classstk_1_1FM.html" title="STK abstract FM synthesis base class.">FM</a> Pairs summed together, also referred to as algorithm 5 of the TX81Z.</p>
<div class="fragment"><pre class="fragment"> Algorithm 5 is : 4->3--\
+ --> Out
2->1--/
</pre></div><p>Control Change Numbers:</p>
<ul>
<li>Modulator Index One = 2</li>
<li>Crossfade of Outputs = 4</li>
<li>LFO Speed = 11</li>
<li>LFO Depth = 1</li>
<li><a class="el" href="classstk_1_1ADSR.html" title="STK ADSR envelope class.">ADSR</a> 2 & 4 Target = 128</li>
</ul>
<p>The basic Chowning/Stanford <a class="el" href="classstk_1_1FM.html" title="STK abstract FM synthesis base class.">FM</a> patent expired in 1995, but there exist follow-on patents, mostly assigned to Yamaha. If you are of the type who should worry about this (making money) worry away.</p>
<p>by Perry R. Cook and Gary P. Scavone, 1995-2012. </p>
<hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="afb2a68449dcd9902f0f037504387c52f"></a><!-- doxytag: member="stk::Wurley::Wurley" ref="afb2a68449dcd9902f0f037504387c52f" args="(void)" -->
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<td class="memname">stk::Wurley::Wurley </td>
<td>(</td>
<td class="paramtype">void </td>
<td class="paramname"></td>
<td> ) </td>
<td></td>
</tr>
</table>
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<div class="memdoc">
<p>Class constructor. </p>
<p>An <a class="el" href="classstk_1_1StkError.html" title="STK error handling class.">StkError</a> will be thrown if the rawwave path is incorrectly set. </p>
</div>
</div>
<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="a505f7e6499761f64d0cc4b6419d945c3"></a><!-- doxytag: member="stk::Wurley::tick" ref="a505f7e6499761f64d0cc4b6419d945c3" args="(StkFrames &frames, unsigned int channel=0)" -->
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<td class="memname"><a class="el" href="classstk_1_1StkFrames.html">StkFrames</a> & stk::Wurley::tick </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classstk_1_1StkFrames.html">StkFrames</a> & </td>
<td class="paramname"> <em>frames</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned int </td>
<td class="paramname"> <em>channel</em> = <code>0</code></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td><code> [inline, virtual]</code></td>
</tr>
</table>
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<div class="memdoc">
<p>Fill a channel of the <a class="el" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a> object with computed outputs. </p>
<p>The <code>channel</code> argument must be less than the number of channels in the <a class="el" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a> argument (the first channel is specified by 0). However, range checking is only performed if _STK_DEBUG_ is defined during compilation, in which case an out-of-range value will trigger an <a class="el" href="classstk_1_1StkError.html" title="STK error handling class.">StkError</a> exception. </p>
<p>Implements <a class="el" href="classstk_1_1FM.html#a870c602be292d2dcc1b0fd97f515f2ff">stk::FM</a>.</p>
<p><div class="fragment"><pre class="fragment"><a name="l00100"></a>00100 {
<a name="l00101"></a>00101 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> nChannels = lastFrame_.channels();
<a name="l00102"></a>00102 <span class="preprocessor">#if defined(_STK_DEBUG_)</span>
<a name="l00103"></a>00103 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( channel > frames.channels() - nChannels ) {
<a name="l00104"></a>00104 oStream_ << <span class="stringliteral">"Wurley::tick(): channel and StkFrames arguments are incompatible!"</span>;
<a name="l00105"></a>00105 <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="l00106"></a>00106 }
<a name="l00107"></a>00107 <span class="preprocessor">#endif</span>
<a name="l00108"></a>00108 <span class="preprocessor"></span>
<a name="l00109"></a>00109 StkFloat *samples = &frames[channel];
<a name="l00110"></a>00110 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> j, hop = frames.channels() - nChannels;
<a name="l00111"></a>00111 <span class="keywordflow">if</span> ( nChannels == 1 ) {
<a name="l00112"></a>00112 <span class="keywordflow">for</span> ( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0; i<frames.frames(); i++, samples += hop )
<a name="l00113"></a>00113 *samples++ = <a class="code" href="classstk_1_1Wurley.html#a2019cfe262eb755ac939c98bda0383bd" title="Compute and return one output sample.">tick</a>();
<a name="l00114"></a>00114 }
<a name="l00115"></a>00115 <span class="keywordflow">else</span> {
<a name="l00116"></a>00116 <span class="keywordflow">for</span> ( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0; i<frames.frames(); i++, samples += hop ) {
<a name="l00117"></a>00117 *samples++ = <a class="code" href="classstk_1_1Wurley.html#a2019cfe262eb755ac939c98bda0383bd" title="Compute and return one output sample.">tick</a>();
<a name="l00118"></a>00118 <span class="keywordflow">for</span> ( j=1; j<nChannels; j++ )
<a name="l00119"></a>00119 *samples++ = lastFrame_[j];
<a name="l00120"></a>00120 }
<a name="l00121"></a>00121 }
<a name="l00122"></a>00122
<a name="l00123"></a>00123 <span class="keywordflow">return</span> frames;
<a name="l00124"></a>00124 }
</pre></div></p>
</div>
</div>
<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="Wurley_8h_source.html">Wurley.h</a></li>
</ul>
</div>
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<table>
<tr><td><A HREF="http://ccrma.stanford.edu/software/stk/"><I>The Synthesis ToolKit in C++ (STK)</I></A></td></tr>
<tr><td>©1995-2012 Perry R. Cook and Gary P. Scavone. All Rights Reserved.</td></tr>
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