The Synthesis ToolKit in C++ (STK)

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Saxofony.h
1 #ifndef STK_SAXOFONY_H
2 #define STK_SAXOFONY_H
3
4 #include "Instrmnt.h"
5 #include "DelayL.h"
6 #include "ReedTable.h"
7 #include "OneZero.h"
8 #include "Envelope.h"
9 #include "Noise.h"
10 #include "SineWave.h"
11
12 namespace stk {
13
14 /***************************************************/
49 /***************************************************/
50
51 class Saxofony : public Instrmnt
52 {
53 public:
55
58 Saxofony( StkFloat lowestFrequency );
59
61 ~Saxofony( void );
62
64 void clear( void );
65
67 void setFrequency( StkFloat frequency );
68
70 void setBlowPosition( StkFloat aPosition );
71
73 void startBlowing( StkFloat amplitude, StkFloat rate );
74
76 void stopBlowing( StkFloat rate );
77
79 void noteOn( StkFloat frequency, StkFloat amplitude );
80
82 void noteOff( StkFloat amplitude );
83
85 void controlChange( int number, StkFloat value );
86
88 StkFloat tick( unsigned int channel = 0 );
89
91
98 StkFrames& tick( StkFrames& frames, unsigned int channel = 0 );
99
100 protected:
101
102 DelayL delays_[2];
103 ReedTable reedTable_;
104 OneZero filter_;
105 Envelope envelope_;
106 Noise noise_;
107 SineWave vibrato_;
108
109 StkFloat outputGain_;
110 StkFloat noiseGain_;
111 StkFloat vibratoGain_;
112 StkFloat position_;
113
114 };
115
116 inline StkFloat Saxofony :: tick( unsigned int )
117 {
118 StkFloat pressureDiff;
119 StkFloat breathPressure;
120 StkFloat temp;
121
122 // Calculate the breath pressure (envelope + noise + vibrato)
123 breathPressure = envelope_.tick();
124 breathPressure += breathPressure * noiseGain_ * noise_.tick();
125 breathPressure += breathPressure * vibratoGain_ * vibrato_.tick();
126
127 temp = -0.95 * filter_.tick( delays_[0].lastOut() );
128 lastFrame_[0] = temp - delays_[1].lastOut();
129 pressureDiff = breathPressure - lastFrame_[0];
130 delays_[1].tick( temp );
131 delays_[0].tick( breathPressure - (pressureDiff * reedTable_.tick(pressureDiff)) - temp );
132
133 lastFrame_[0] *= outputGain_;
134 return lastFrame_[0];
135 }
136
137 inline StkFrames& Saxofony :: tick( StkFrames& frames, unsigned int channel )
138 {
139 unsigned int nChannels = lastFrame_.channels();
140 #if defined(_STK_DEBUG_)
141 if ( channel > frames.channels() - nChannels ) {
142 oStream_ << "Saxofony::tick(): channel and StkFrames arguments are incompatible!";
143 handleError( StkError::FUNCTION_ARGUMENT );
144 }
145 #endif
146
147 StkFloat *samples = &frames[channel];
148 unsigned int j, hop = frames.channels() - nChannels;
149 if ( nChannels == 1 ) {
150 for ( unsigned int i=0; i<frames.frames(); i++, samples += hop )
151 *samples++ = tick();
152 }
153 else {
154 for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) {
155 *samples++ = tick();
156 for ( j=1; j<nChannels; j++ )
157 *samples++ = lastFrame_[j];
158 }
159 }
160
161 return frames;
162 }
163
164 } // stk namespace
165
166 #endif

The Synthesis ToolKit in C++ (STK)
©1995--2017 Perry R. Cook and Gary P. Scavone. All Rights Reserved.