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STK heavy metal FM synthesis instrument. More...
#include <HevyMetl.h>
Public Member Functions | |
HevyMetl (void) | |
Class constructor. | |
~HevyMetl (void) | |
Class destructor. | |
void | noteOn (StkFloat frequency, StkFloat amplitude) |
Start a note with the given frequency and amplitude. | |
StkFloat | tick (unsigned int channel=0) |
Compute and return one output sample. | |
StkFrames & | tick (StkFrames &frames, unsigned int channel=0) |
Fill a channel of the StkFrames object with computed outputs. |
STK heavy metal FM synthesis instrument.
This class implements 3 cascade operators with feedback modulation, also referred to as algorithm 3 of the TX81Z.
Algorithm 3 is : 4--\ 3-->2-- + -->1-->Out
Control Change Numbers:
The basic Chowning/Stanford FM patent expired in 1995, but there exist follow-on patents, mostly assigned to Yamaha. If you are of the type who should worry about this (making money) worry away.
by Perry R. Cook and Gary P. Scavone, 1995-2012.
stk::HevyMetl::HevyMetl | ( | void | ) |
Class constructor.
An StkError will be thrown if the rawwave path is incorrectly set.
Fill a channel of the StkFrames object with computed outputs.
The channel
argument must be less than the number of channels in the StkFrames argument (the first channel is specified by 0). However, range checking is only performed if _STK_DEBUG_ is defined during compilation, in which case an out-of-range value will trigger an StkError exception.
Implements stk::FM.
00098 { 00099 unsigned int nChannels = lastFrame_.channels(); 00100 #if defined(_STK_DEBUG_) 00101 if ( channel > frames.channels() - nChannels ) { 00102 oStream_ << "HevyMetl::tick(): channel and StkFrames arguments are incompatible!"; 00103 handleError( StkError::FUNCTION_ARGUMENT ); 00104 } 00105 #endif 00106 00107 StkFloat *samples = &frames[channel]; 00108 unsigned int j, hop = frames.channels() - nChannels; 00109 if ( nChannels == 1 ) { 00110 for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) 00111 *samples++ = tick(); 00112 } 00113 else { 00114 for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) { 00115 *samples++ = tick(); 00116 for ( j=1; j<nChannels; j++ ) 00117 *samples++ = lastFrame_[j]; 00118 } 00119 } 00120 00121 return frames; 00122 }
The Synthesis ToolKit in C++ (STK) |
©1995-2012 Perry R. Cook and Gary P. Scavone. All Rights Reserved. |