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STK drum sample player class. More...
#include <Drummer.h>
Public Member Functions | |
Drummer (void) | |
Class constructor. | |
~Drummer (void) | |
Class destructor. | |
void | noteOn (StkFloat instrument, StkFloat amplitude) |
Start a note with the given drum type and amplitude. | |
void | noteOff (StkFloat amplitude) |
Stop a note with the given amplitude (speed of decay). | |
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 drum sample player class.
This class implements a drum sampling synthesizer using WvIn objects and one-pole filters. The drum rawwave files are sampled at 22050 Hz, but will be appropriately interpolated for other sample rates. You can specify the maximum polyphony (maximum number of simultaneous voices) via a define in the Drummer.h.
by Perry R. Cook and Gary P. Scavone, 1995-2012.
stk::Drummer::Drummer | ( | void | ) |
Class constructor.
An StkError will be thrown if the rawwave path is incorrectly set.
void stk::Drummer::noteOn | ( | StkFloat | instrument, | |
StkFloat | amplitude | |||
) | [virtual] |
Start a note with the given drum type and amplitude.
Use general MIDI drum instrument numbers, converted to frequency values as if MIDI note numbers, to select a particular instrument. An StkError will be thrown if the rawwave path is incorrectly set.
Implements stk::Instrmnt.
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::Instrmnt.
00101 { 00102 unsigned int nChannels = lastFrame_.channels(); 00103 #if defined(_STK_DEBUG_) 00104 if ( channel > frames.channels() - nChannels ) { 00105 oStream_ << "Drummer::tick(): channel and StkFrames arguments are incompatible!"; 00106 handleError( StkError::FUNCTION_ARGUMENT ); 00107 } 00108 #endif 00109 00110 StkFloat *samples = &frames[channel]; 00111 unsigned int j, hop = frames.channels() - nChannels; 00112 if ( nChannels == 1 ) { 00113 for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) 00114 *samples++ = tick(); 00115 } 00116 else { 00117 for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) { 00118 *samples++ = tick(); 00119 for ( j=1; j<nChannels; j++ ) 00120 *samples++ = lastFrame_[j]; 00121 } 00122 } 00123 00124 return frames; 00125 }
The Synthesis ToolKit in C++ (STK) |
©1995-2012 Perry R. Cook and Gary P. Scavone. All Rights Reserved. |