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stk/doc/html/BlowBotl_8h-source.html
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<h1>BlowBotl.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef STK_BLOWBOTL_H</span>
<a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define STK_BLOWBOTL_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 "JetTable.h"</span>
<a name="l00006"></a>00006 <span class="preprocessor">#include "BiQuad.h"</span>
<a name="l00007"></a>00007 <span class="preprocessor">#include "PoleZero.h"</span>
<a name="l00008"></a>00008 <span class="preprocessor">#include "Noise.h"</span>
<a name="l00009"></a>00009 <span class="preprocessor">#include "ADSR.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="l00030"></a>00030 <span class="comment">/***************************************************/</span>
<a name="l00031"></a>00031
<a name="l00032"></a><a class="code" href="classstk_1_1BlowBotl.html">00032</a> <span class="keyword">class </span><a class="code" href="classstk_1_1BlowBotl.html" title="STK blown bottle instrument class.">BlowBotl</a> : <span class="keyword">public</span> <a class="code" href="classstk_1_1Instrmnt.html" title="STK instrument abstract base class.">Instrmnt</a>
<a name="l00033"></a>00033 {
<a name="l00034"></a>00034 <span class="keyword">public</span>:
<a name="l00036"></a>00036
<a name="l00039"></a>00039 <a class="code" href="classstk_1_1BlowBotl.html#a505b4fc32ffe974b5840163395c321c" title="Class constructor.">BlowBotl</a>( <span class="keywordtype">void</span> );
<a name="l00040"></a>00040
<a name="l00042"></a>00042 <a class="code" href="classstk_1_1BlowBotl.html#dae826b0487471da1779761b0f885cb8" title="Class destructor.">~BlowBotl</a>( <span class="keywordtype">void</span> );
<a name="l00043"></a>00043
<a name="l00045"></a>00045 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BlowBotl.html#271161f45e0a706d8ccd299f9aaf2ada" title="Reset and clear all internal state.">clear</a>( <span class="keywordtype">void</span> );
<a name="l00046"></a>00046
<a name="l00048"></a>00048 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BlowBotl.html#75b679cd641bb4bae9bc4ac3021a03e3" title="Set instrument parameters for a particular frequency.">setFrequency</a>( StkFloat frequency );
<a name="l00049"></a>00049
<a name="l00051"></a>00051 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BlowBotl.html#926d428669edf9c87a1f88faf01550c4" title="Apply breath velocity to instrument with given amplitude and rate of increase.">startBlowing</a>( StkFloat amplitude, StkFloat rate );
<a name="l00052"></a>00052
<a name="l00054"></a>00054 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BlowBotl.html#91a174c3501aafbbfe6841f6915fe4f3" title="Decrease breath velocity with given rate of decrease.">stopBlowing</a>( StkFloat rate );
<a name="l00055"></a>00055
<a name="l00057"></a>00057 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BlowBotl.html#faf3f964cbdf99eddd7af99626169c02" title="Start a note with the given frequency and amplitude.">noteOn</a>( StkFloat frequency, StkFloat amplitude );
<a name="l00058"></a>00058
<a name="l00060"></a>00060 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BlowBotl.html#132c87a453ecf25301243dc62f57f587" title="Stop a note with the given amplitude (speed of decay).">noteOff</a>( StkFloat amplitude );
<a name="l00061"></a>00061
<a name="l00063"></a>00063 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1BlowBotl.html#21a4b2aaaac7afcc67b4abe5ed833bfd" 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="l00064"></a>00064
<a name="l00066"></a>00066 StkFloat <a class="code" href="classstk_1_1BlowBotl.html#68501c2422994c8dca50086b3d944119" title="Compute and return one output sample.">tick</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel = 0 );
<a name="l00067"></a>00067
<a name="l00068"></a>00068 <span class="keyword">protected</span>:
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <a class="code" href="classstk_1_1JetTable.html" title="STK jet table class.">JetTable</a> jetTable_;
<a name="l00071"></a>00071 <a class="code" href="classstk_1_1BiQuad.html" title="STK biquad (two-pole, two-zero) filter class.">BiQuad</a> resonator_;
<a name="l00072"></a>00072 <a class="code" href="classstk_1_1PoleZero.html" title="STK one-pole, one-zero filter class.">PoleZero</a> dcBlock_;
<a name="l00073"></a>00073 <a class="code" href="classstk_1_1Noise.html" title="STK noise generator.">Noise</a> noise_;
<a name="l00074"></a>00074 <a class="code" href="classstk_1_1ADSR.html" title="STK ADSR envelope class.">ADSR</a> adsr_;
<a name="l00075"></a>00075 <a class="code" href="classstk_1_1SineWave.html" title="STK sinusoid oscillator class.">SineWave</a> vibrato_;
<a name="l00076"></a>00076 StkFloat maxPressure_;
<a name="l00077"></a>00077 StkFloat noiseGain_;
<a name="l00078"></a>00078 StkFloat vibratoGain_;
<a name="l00079"></a>00079 StkFloat outputGain_;
<a name="l00080"></a>00080
<a name="l00081"></a>00081 };
<a name="l00082"></a>00082
<a name="l00083"></a><a class="code" href="classstk_1_1BlowBotl.html#68501c2422994c8dca50086b3d944119">00083</a> <span class="keyword">inline</span> StkFloat <a class="code" href="classstk_1_1BlowBotl.html#68501c2422994c8dca50086b3d944119" title="Compute and return one output sample.">BlowBotl :: tick</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> )
<a name="l00084"></a>00084 {
<a name="l00085"></a>00085 StkFloat breathPressure;
<a name="l00086"></a>00086 StkFloat randPressure;
<a name="l00087"></a>00087 StkFloat pressureDiff;
<a name="l00088"></a>00088
<a name="l00089"></a>00089 <span class="comment">// Calculate the breath pressure (envelope + vibrato)</span>
<a name="l00090"></a>00090 breathPressure = maxPressure_ * adsr_.<a class="code" href="classstk_1_1ADSR.html#f2c0869f86210a55f4f668172373c975" title="Compute and return one output sample.">tick</a>();
<a name="l00091"></a>00091 breathPressure += vibratoGain_ * vibrato_.<a class="code" href="classstk_1_1SineWave.html#31a55627bf8064919b5e063059260eda" title="Compute and return one output sample.">tick</a>();
<a name="l00092"></a>00092
<a name="l00093"></a>00093 pressureDiff = breathPressure - resonator_.<a class="code" href="classstk_1_1BiQuad.html#412f224363b1a222423ecf0cd7be9063" title="Return the last computed output value.">lastOut</a>();
<a name="l00094"></a>00094
<a name="l00095"></a>00095 randPressure = noiseGain_ * noise_.<a class="code" href="classstk_1_1Noise.html#8ac40f69475eb744e803d557e8438a6d" title="Compute and return one output sample.">tick</a>();
<a name="l00096"></a>00096 randPressure *= breathPressure;
<a name="l00097"></a>00097 randPressure *= (1.0 + pressureDiff);
<a name="l00098"></a>00098
<a name="l00099"></a>00099 resonator_.<a class="code" href="classstk_1_1BiQuad.html#648086962c3cddcaa09c46a002c3e635" title="Input one sample to the filter and return a reference to one output.">tick</a>( breathPressure + randPressure - ( jetTable_.<a class="code" href="classstk_1_1JetTable.html#3fb5333e6305abdeee7cd83a10ef76b6" title="Take one sample input and map to one sample of output.">tick</a>( pressureDiff ) * pressureDiff ) );
<a name="l00100"></a>00100 lastFrame_[0] = 0.2 * outputGain_ * dcBlock_.<a class="code" href="classstk_1_1PoleZero.html#1a29ac6f3a2b75e71693c73554599228" title="Input one sample to the filter and return one output.">tick</a>( pressureDiff );
<a name="l00101"></a>00101
<a name="l00102"></a>00102 <span class="keywordflow">return</span> lastFrame_[0];
<a name="l00103"></a>00103 }
<a name="l00104"></a>00104
<a name="l00105"></a>00105 } <span class="comment">// stk namespace</span>
<a name="l00106"></a>00106
<a name="l00107"></a>00107 <span class="preprocessor">#endif</span>
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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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