The Synthesis ToolKit in C++ (STK)

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PercFlut.h
1 #ifndef STK_PERCFLUT_H
2 #define STK_PERCFLUT_H
3
4 #include "FM.h"
5
6 namespace stk {
7
8 /***************************************************/
34 /***************************************************/
35
36 class PercFlut : public FM
37 {
38 public:
40
43 PercFlut( void );
44
46 ~PercFlut( void );
47
49 void setFrequency( StkFloat frequency );
50
52 void noteOn( StkFloat frequency, StkFloat amplitude );
53
55 StkFloat tick( unsigned int channel = 0 );
56
58
65 StkFrames& tick( StkFrames& frames, unsigned int channel = 0 );
66
67 protected:
68
69 };
70
71 inline StkFloat PercFlut :: tick( unsigned int )
72 {
73 StkFloat temp;
74
75 temp = vibrato_.tick() * modDepth_ * 0.2;
76 waves_[0]->setFrequency(baseFrequency_ * (1.0 + temp) * ratios_[0]);
77 waves_[1]->setFrequency(baseFrequency_ * (1.0 + temp) * ratios_[1]);
78 waves_[2]->setFrequency(baseFrequency_ * (1.0 + temp) * ratios_[2]);
79 waves_[3]->setFrequency(baseFrequency_ * (1.0 + temp) * ratios_[3]);
80
81 waves_[3]->addPhaseOffset( twozero_.lastOut() );
82 temp = gains_[3] * adsr_[3]->tick() * waves_[3]->tick();
83
84 twozero_.tick(temp);
85 waves_[2]->addPhaseOffset( temp );
86 temp = (1.0 - (control2_ * 0.5)) * gains_[2] * adsr_[2]->tick() * waves_[2]->tick();
87
88 temp += control2_ * 0.5 * gains_[1] * adsr_[1]->tick() * waves_[1]->tick();
89 temp = temp * control1_;
90
91 waves_[0]->addPhaseOffset(temp);
92 temp = gains_[0] * adsr_[0]->tick() * waves_[0]->tick();
93
94 lastFrame_[0] = temp * 0.5;
95 return lastFrame_[0];
96 }
97
98 inline StkFrames& PercFlut :: 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_ << "PercFlut::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::PercFlut::noteOn
void noteOn(StkFloat frequency, StkFloat amplitude)
Start a note with the given frequency and amplitude.
stk::Stk::handleError
static void handleError(const char *message, StkError::Type type)
Static function for error reporting and handling using c-strings.
stk::PercFlut::tick
StkFloat tick(unsigned int channel=0)
Compute and return one output sample.
Definition: PercFlut.h:71
stk::StkFrames::frames
unsigned int frames(void) const
Return the number of sample frames represented by the data.
Definition: Stk.h:407
stk::FM
STK abstract FM synthesis base class.
Definition: FM.h:37
stk
The STK namespace.
Definition: ADSR.h:6
stk::TwoZero::tick
StkFloat tick(StkFloat input)
Input one sample to the filter and return one output.
Definition: TwoZero.h:92
stk::SineWave::tick
StkFloat tick(void)
Compute and return one output sample.
Definition: SineWave.h:99
stk::PercFlut::~PercFlut
~PercFlut(void)
Class destructor.
stk::StkFrames::channels
unsigned int channels(void) const
Return the number of channels represented by the data.
Definition: Stk.h:404
stk::StkFrames
An STK class to handle vectorized audio data.
Definition: Stk.h:275
stk::TwoZero::lastOut
StkFloat lastOut(void) const
Return the last computed output value.
Definition: TwoZero.h:60
stk::PercFlut::PercFlut
PercFlut(void)
Class constructor.
stk::PercFlut
STK percussive flute FM synthesis instrument.
Definition: PercFlut.h:36
stk::PercFlut::setFrequency
void setFrequency(StkFloat frequency)
Set instrument parameters for a particular frequency.

The Synthesis ToolKit in C++ (STK)
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