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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

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