1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
<HTML>
<HEAD>
<TITLE>The Synthesis ToolKit in C++ (STK)</TITLE>
<LINK HREF="doxygen.css" REL="stylesheet" TYPE="text/css">
</HEAD>
<BODY BGCOLOR="#FFFFFF">
<CENTER>
<img src="princeton.gif"> <img src="ccrma.gif"> <img src="mcgill.gif"><P>
<a class="qindex" href="index.html">Home</a> <a class="qindex" href="information.html">Information</a> <a class="qindex" href="classes.html">Classes</a> <a class="qindex" href="download.html">Download</a> <a class="qindex" href="usage.html">Usage</a> <a class="qindex" href="maillist.html">Mail List</a> <a class="qindex" href="system.html">Requirements</a> <a class="qindex" href="links.html">Links</a> <a class="qindex" href="faq.html">FAQ</a> <a class="qindex" href="tutorial.html">Tutorial</a></CENTER>
<HR>
<!-- Generated by Doxygen 1.6.2 -->
<div class="navpath"><a class="el" href="dir_221deb9bdff892d63ed1e409450a60d2.html">include</a>
</div>
<div class="contents">
<h1>PercFlut.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef STK_PERCFLUT_H</span>
<a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define STK_PERCFLUT_H</span>
<a name="l00003"></a>00003 <span class="preprocessor"></span>
<a name="l00004"></a>00004 <span class="preprocessor">#include "FM.h"</span>
<a name="l00005"></a>00005
<a name="l00006"></a>00006 <span class="keyword">namespace </span>stk {
<a name="l00007"></a>00007
<a name="l00008"></a>00008 <span class="comment">/***************************************************/</span>
<a name="l00034"></a>00034 <span class="comment">/***************************************************/</span>
<a name="l00035"></a>00035
<a name="l00036"></a><a class="code" href="classstk_1_1PercFlut.html">00036</a> <span class="keyword">class </span><a class="code" href="classstk_1_1PercFlut.html" title="STK percussive flute FM synthesis instrument.">PercFlut</a> : <span class="keyword">public</span> <a class="code" href="classstk_1_1FM.html" title="STK abstract FM synthesis base class.">FM</a>
<a name="l00037"></a>00037 {
<a name="l00038"></a>00038 <span class="keyword">public</span>:
<a name="l00040"></a>00040
<a name="l00043"></a>00043 <a class="code" href="classstk_1_1PercFlut.html#ab51f05b79d818ed8ba80fd827a4839c2" title="Class constructor.">PercFlut</a>( <span class="keywordtype">void</span> );
<a name="l00044"></a>00044
<a name="l00046"></a>00046 <a class="code" href="classstk_1_1PercFlut.html#add2a18e8835d665d505521e0298bd2f0" title="Class destructor.">~PercFlut</a>( <span class="keywordtype">void</span> );
<a name="l00047"></a>00047
<a name="l00049"></a>00049 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1PercFlut.html#a24197fb4ae0bf806d8e3f6fe4eb5598c" title="Set instrument parameters for a particular frequency.">setFrequency</a>( StkFloat frequency );
<a name="l00050"></a>00050
<a name="l00052"></a>00052 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1PercFlut.html#a7ebfc19d4c41482a699f43b2c06dc02d" title="Start a note with the given frequency and amplitude.">noteOn</a>( StkFloat frequency, StkFloat amplitude );
<a name="l00053"></a>00053
<a name="l00055"></a>00055 StkFloat <a class="code" href="classstk_1_1PercFlut.html#ac2b2958902c044413a1c7ff3bd0f8054" title="Compute and return one output sample.">tick</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel = 0 );
<a name="l00056"></a>00056
<a name="l00058"></a>00058
<a name="l00065"></a>00065 <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_1PercFlut.html#ac2b2958902c044413a1c7ff3bd0f8054" 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="l00066"></a>00066
<a name="l00067"></a>00067 <span class="keyword">protected</span>:
<a name="l00068"></a>00068
<a name="l00069"></a>00069 };
<a name="l00070"></a>00070
<a name="l00071"></a><a class="code" href="classstk_1_1PercFlut.html#ac2b2958902c044413a1c7ff3bd0f8054">00071</a> <span class="keyword">inline</span> StkFloat <a class="code" href="classstk_1_1PercFlut.html#ac2b2958902c044413a1c7ff3bd0f8054" title="Compute and return one output sample.">PercFlut :: tick</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> )
<a name="l00072"></a>00072 {
<a name="l00073"></a>00073 <span class="keyword">register</span> StkFloat temp;
<a name="l00074"></a>00074
<a name="l00075"></a>00075 temp = vibrato_.<a class="code" href="classstk_1_1SineWave.html#a31a55627bf8064919b5e063059260eda" title="Compute and return one output sample.">tick</a>() * modDepth_ * 0.2;
<a name="l00076"></a>00076 waves_[0]->setFrequency(baseFrequency_ * (1.0 + temp) * ratios_[0]);
<a name="l00077"></a>00077 waves_[1]->setFrequency(baseFrequency_ * (1.0 + temp) * ratios_[1]);
<a name="l00078"></a>00078 waves_[2]->setFrequency(baseFrequency_ * (1.0 + temp) * ratios_[2]);
<a name="l00079"></a>00079 waves_[3]->setFrequency(baseFrequency_ * (1.0 + temp) * ratios_[3]);
<a name="l00080"></a>00080
<a name="l00081"></a>00081 waves_[3]->addPhaseOffset( twozero_.<a class="code" href="classstk_1_1TwoZero.html#ae9808b0152902d0067ea24ccfba0b4ba" title="Return the last computed output value.">lastOut</a>() );
<a name="l00082"></a>00082 temp = gains_[3] * adsr_[3]->tick() * waves_[3]->tick();
<a name="l00083"></a>00083
<a name="l00084"></a>00084 twozero_.<a class="code" href="classstk_1_1TwoZero.html#acf92a66aeb2024cfcdb9d71ecadf3d82" title="Input one sample to the filter and return one output.">tick</a>(temp);
<a name="l00085"></a>00085 waves_[2]->addPhaseOffset( temp );
<a name="l00086"></a>00086 temp = (1.0 - (control2_ * 0.5)) * gains_[2] * adsr_[2]-><a class="code" href="classstk_1_1PercFlut.html#ac2b2958902c044413a1c7ff3bd0f8054" title="Compute and return one output sample.">tick</a>() * waves_[2]->tick();
<a name="l00087"></a>00087
<a name="l00088"></a>00088 temp += control2_ * 0.5 * gains_[1] * adsr_[1]->tick() * waves_[1]->tick();
<a name="l00089"></a>00089 temp = temp * control1_;
<a name="l00090"></a>00090
<a name="l00091"></a>00091 waves_[0]->addPhaseOffset(temp);
<a name="l00092"></a>00092 temp = gains_[0] * adsr_[0]->tick() * waves_[0]->tick();
<a name="l00093"></a>00093
<a name="l00094"></a>00094 lastFrame_[0] = temp * 0.5;
<a name="l00095"></a>00095 <span class="keywordflow">return</span> lastFrame_[0];
<a name="l00096"></a>00096 }
<a name="l00097"></a>00097
<a name="l00098"></a><a class="code" href="classstk_1_1PercFlut.html#a4105b2b1dfe375bcf870fb4903509e4e">00098</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_1PercFlut.html#ac2b2958902c044413a1c7ff3bd0f8054" title="Compute and return one output sample.">PercFlut :: 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="l00099"></a>00099 {
<a name="l00100"></a>00100 <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="l00101"></a>00101 <span class="preprocessor">#if defined(_STK_DEBUG_)</span>
<a name="l00102"></a>00102 <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="l00103"></a>00103 oStream_ << <span class="stringliteral">"PercFlut::tick(): channel and StkFrames arguments are incompatible!"</span>;
<a name="l00104"></a>00104 <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="l00105"></a>00105 }
<a name="l00106"></a>00106 <span class="preprocessor">#endif</span>
<a name="l00107"></a>00107 <span class="preprocessor"></span>
<a name="l00108"></a>00108 StkFloat *samples = &frames[channel];
<a name="l00109"></a>00109 <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="l00110"></a>00110 <span class="keywordflow">if</span> ( nChannels == 1 ) {
<a name="l00111"></a>00111 <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="l00112"></a>00112 *samples++ = <a class="code" href="classstk_1_1PercFlut.html#ac2b2958902c044413a1c7ff3bd0f8054" title="Compute and return one output sample.">tick</a>();
<a name="l00113"></a>00113 }
<a name="l00114"></a>00114 <span class="keywordflow">else</span> {
<a name="l00115"></a>00115 <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="l00116"></a>00116 *samples++ = <a class="code" href="classstk_1_1PercFlut.html#ac2b2958902c044413a1c7ff3bd0f8054" title="Compute and return one output sample.">tick</a>();
<a name="l00117"></a>00117 <span class="keywordflow">for</span> ( j=1; j<nChannels; j++ )
<a name="l00118"></a>00118 *samples++ = lastFrame_[j];
<a name="l00119"></a>00119 }
<a name="l00120"></a>00120 }
<a name="l00121"></a>00121
<a name="l00122"></a>00122 <span class="keywordflow">return</span> frames;
<a name="l00123"></a>00123 }
<a name="l00124"></a>00124
<a name="l00125"></a>00125 } <span class="comment">// stk namespace</span>
<a name="l00126"></a>00126
<a name="l00127"></a>00127 <span class="preprocessor">#endif</span>
</pre></div></div>
<HR>
<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>
</table>
</BODY>
</HTML>
|
