The Synthesis ToolKit in C++ (STK)

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BeeThree.h
1#ifndef STK_BEETHREE_H
2#define STK_BEETHREE_H
3
4#include "FM.h"
5
6namespace stk {
7
8/***************************************************/
40/***************************************************/
41
42 class BeeThree : public FM
43{
44 public:
46
49 BeeThree( void );
50
52 ~BeeThree( void );
53
55 void noteOn( StkFloat frequency, StkFloat amplitude );
56
58 StkFloat tick( unsigned int channel = 0 );
59
61
68 StkFrames& tick( StkFrames& frames, unsigned int channel = 0 );
69
70 protected:
71
72};
73
74 inline StkFloat BeeThree :: tick( unsigned int )
75{
76 StkFloat temp;
77
78 if ( modDepth_ > 0.0 ) {
79 temp = 1.0 + ( modDepth_ * vibrato_.tick() * 0.1 );
80 waves_[0]->setFrequency( baseFrequency_ * temp * ratios_[0] );
81 waves_[1]->setFrequency( baseFrequency_ * temp * ratios_[1] );
82 waves_[2]->setFrequency( baseFrequency_ * temp * ratios_[2] );
83 waves_[3]->setFrequency( baseFrequency_ * temp * ratios_[3] );
84 }
85
86 waves_[3]->addPhaseOffset( twozero_.lastOut() );
87 temp = control1_ * 2.0 * gains_[3] * adsr_[3]->tick() * waves_[3]->tick();
88 twozero_.tick( temp );
89
90 temp += control2_ * 2.0 * gains_[2] * adsr_[2]->tick() * waves_[2]->tick();
91 temp += gains_[1] * adsr_[1]->tick() * waves_[1]->tick();
92 temp += gains_[0] * adsr_[0]->tick() * waves_[0]->tick();
93
94 lastFrame_[0] = temp * 0.125;
95 return lastFrame_[0];
96}
97
98 inline StkFrames& BeeThree :: tick( StkFrames& frames, unsigned int channel )
99{
100 unsigned int nChannels = lastFrame_.channels();
101#if defined(_STK_DEBUG_)
102 if ( channel > frames.channels() - nChannels ) {
103 oStream_ << "BeeThree::tick(): channel and StkFrames arguments are incompatible!";
104 handleError( StkError::FUNCTION_ARGUMENT );
105 }
106#endif
107
108 StkFloat *samples = &frames[channel];
109 unsigned int j, hop = frames.channels() - nChannels;
110 if ( nChannels == 1 ) {
111 for ( unsigned int i=0; i<frames.frames(); i++, samples += hop )
112 *samples++ = tick();
113 }
114 else {
115 for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) {
116 *samples++ = tick();
117 for ( j=1; j<nChannels; j++ )
118 *samples++ = lastFrame_[j];
119 }
120 }
121
122 return frames;
123}
124
125} // stk namespace
126
127#endif
stk::BeeThree
STK Hammond-oid organ FM synthesis instrument.
Definition BeeThree.h:43
stk::BeeThree::tick
StkFloat tick(unsigned int channel=0)
Compute and return one output sample.
Definition BeeThree.h:74
stk::BeeThree::noteOn
void noteOn(StkFloat frequency, StkFloat amplitude)
Start a note with the given frequency and amplitude.
stk::BeeThree::BeeThree
BeeThree(void)
Class constructor.
stk::BeeThree::~BeeThree
~BeeThree(void)
Class destructor.
stk::FM
STK abstract FM synthesis base class.
Definition FM.h:38
stk::StkFrames
An STK class to handle vectorized audio data.
Definition Stk.h:279
stk::StkFrames::channels
unsigned int channels(void) const
Return the number of channels represented by the data.
Definition Stk.h:416
stk::StkFrames::frames
unsigned int frames(void) const
Return the number of sample frames represented by the data.
Definition Stk.h:419
stk
The STK namespace.
Definition ADSR.h:6

The Synthesis ToolKit in C++ (STK)
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