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stk::Brass Class Reference

STK simple brass instrument class. More...

#include <Brass.h>

Inheritance diagram for stk::Brass:
stk::Instrmnt stk::Stk

List of all members.

Public Member Functions

 Brass (StkFloat lowestFrequency=8.0)
 Class constructor, taking the lowest desired playing frequency.
 ~Brass ()
 Class destructor.
void clear ()
 Reset and clear all internal state.
void setFrequency (StkFloat frequency)
 Set instrument parameters for a particular frequency.
void setLip (StkFloat frequency)
 Set the lips frequency.
void startBlowing (StkFloat amplitude, StkFloat rate)
 Apply breath pressure to instrument with given amplitude and rate of increase.
void stopBlowing (StkFloat rate)
 Decrease breath pressure with given rate of decrease.
void noteOn (StkFloat frequency, StkFloat amplitude)
 Start a note with the given frequency and amplitude.
void noteOff (StkFloat amplitude)
 Stop a note with the given amplitude (speed of decay).
void controlChange (int number, StkFloat value)
 Perform the control change specified by number and value (0.0 - 128.0).
StkFloat tick (unsigned int channel=0)
 Compute and return one output sample.
StkFramestick (StkFrames &frames, unsigned int channel=0)
 Fill a channel of the StkFrames object with computed outputs.

Detailed Description

STK simple brass instrument class.

This class implements a simple brass instrument waveguide model, a la Cook (TBone, HosePlayer).

This is a digital waveguide model, making its use possibly subject to patents held by Stanford University, Yamaha, and others.

Control Change Numbers:

by Perry R. Cook and Gary P. Scavone, 1995-2012.


Constructor & Destructor Documentation

stk::Brass::Brass ( StkFloat  lowestFrequency = 8.0  ) 

Class constructor, taking the lowest desired playing frequency.

An StkError will be thrown if the rawwave path is incorrectly set.


Member Function Documentation

StkFrames & stk::Brass::tick ( StkFrames frames,
unsigned int  channel = 0 
) [inline, virtual]

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.

00119 {
00120   unsigned int nChannels = lastFrame_.channels();
00121 #if defined(_STK_DEBUG_)
00122   if ( channel > frames.channels() - nChannels ) {
00123     oStream_ << "Brass::tick(): channel and StkFrames arguments are incompatible!";
00124     handleError( StkError::FUNCTION_ARGUMENT );
00125   }
00126 #endif
00127 
00128   StkFloat *samples = &frames[channel];
00129   unsigned int j, hop = frames.channels() - nChannels;
00130   if ( nChannels == 1 ) {
00131     for ( unsigned int i=0; i<frames.frames(); i++, samples += hop )
00132       *samples++ = tick();
00133   }
00134   else {
00135     for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) {
00136       *samples++ = tick();
00137       for ( j=1; j<nChannels; j++ )
00138         *samples++ = lastFrame_[j];
00139     }
00140   }
00141 
00142   return frames;
00143 }


The documentation for this class was generated from the following file:

The Synthesis ToolKit in C++ (STK)
©1995-2012 Perry R. Cook and Gary P. Scavone. All Rights Reserved.