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TubeBell.h
1#ifndef STK_TUBEBELL_H
2#define STK_TUBEBELL_H
3
4#include "FM.h"
5
6 namespace stk {
7
8/***************************************************/
38/***************************************************/
39
40 class TubeBell : public FM
41{
42 public:
44
47 TubeBell( void );
48
50 ~TubeBell( void );
51
53 void noteOn( StkFloat frequency, StkFloat amplitude );
54
56 StkFloat tick( unsigned int channel = 0 );
57
59
66 StkFrames& tick( StkFrames& frames, unsigned int channel = 0 );
67
68 protected:
69
70};
71
72 inline StkFloat TubeBell :: tick( unsigned int )
73{
74 StkFloat temp, temp2;
75
76 temp = gains_[1] * adsr_[1]->tick() * waves_[1]->tick();
77 temp = temp * control1_;
78
79 waves_[0]->addPhaseOffset( temp );
80 waves_[3]->addPhaseOffset( twozero_.lastOut() );
81 temp = gains_[3] * adsr_[3]->tick() * waves_[3]->tick();
82 twozero_.tick( temp );
83
84 waves_[2]->addPhaseOffset( temp );
85 temp = ( 1.0 - (control2_ * 0.5)) * gains_[0] * adsr_[0]->tick() * waves_[0]->tick();
86 temp += control2_ * 0.5 * gains_[2] * adsr_[2]->tick() * waves_[2]->tick();
87
88 // Calculate amplitude modulation and apply it to output.
89 temp2 = vibrato_.tick() * modDepth_;
90 temp = temp * (1.0 + temp2);
91
92 lastFrame_[0] = temp * 0.5;
93 return lastFrame_[0];
94}
95
96 inline StkFrames& TubeBell :: tick( StkFrames& frames, unsigned int channel )
97{
98 unsigned int nChannels = lastFrame_.channels();
99#if defined(_STK_DEBUG_)
100 if ( channel > frames.channels() - nChannels ) {
101 oStream_ << "TubeBell::tick(): channel and StkFrames arguments are incompatible!";
102 handleError( StkError::FUNCTION_ARGUMENT );
103 }
104#endif
105
106 StkFloat *samples = &frames[channel];
107 unsigned int j, hop = frames.channels() - nChannels;
108 if ( nChannels == 1 ) {
109 for ( unsigned int i=0; i<frames.frames(); i++, samples += hop )
110 *samples++ = tick();
111 }
112 else {
113 for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) {
114 *samples++ = tick();
115 for ( j=1; j<nChannels; j++ )
116 *samples++ = lastFrame_[j];
117 }
118 }
119
120 return frames;
121}
122
123} // stk namespace
124
125#endif
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::TubeBell
STK tubular bell (orchestral chime) FM synthesis instrument.
Definition TubeBell.h:41
stk::TubeBell::TubeBell
TubeBell(void)
Class constructor.
stk::TubeBell::noteOn
void noteOn(StkFloat frequency, StkFloat amplitude)
Start a note with the given frequency and amplitude.
stk::TubeBell::~TubeBell
~TubeBell(void)
Class destructor.
stk::TubeBell::tick
StkFloat tick(unsigned int channel=0)
Compute and return one output sample.
Definition TubeBell.h:72
stk
The STK namespace.
Definition ADSR.h:6

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