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Version 4.4.3

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This commit is contained in:
Gary Scavone
2013-09-29 23:21:29 +02:00
committed by Stephen Sinclair
parent baca57040b
commit 0aec39260a
223 changed files with 26190 additions and 11130 deletions
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49
include/Plucked.h
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@@ -11,12 +11,15 @@ namespace stk {
/***************************************************/
/*! \class Plucked
\brief STK plucked string model class.
\brief STK basic plucked string class.
This class implements a simple plucked string
physical model based on the Karplus-Strong
algorithm.
For a more advanced plucked string implementation,
see the stk::Twang class.
This is a digital waveguide model, making its
use possibly subject to patents held by
Stanford University, Yamaha, and others.
@@ -24,7 +27,7 @@ namespace stk {
Stanford, bearing the names of Karplus and/or
Strong.
by Perry R. Cook and Gary P. Scavone, 1995 - 2010.
by Perry R. Cook and Gary P. Scavone, 1995-2011.
*/
/***************************************************/
@@ -32,7 +35,7 @@ class Plucked : public Instrmnt
{
public:
//! Class constructor, taking the lowest desired playing frequency.
Plucked( StkFloat lowestFrequency );
Plucked( StkFloat lowestFrequency = 10.0 );
//! Class destructor.
~Plucked( void );
@@ -55,15 +58,24 @@ class Plucked : public Instrmnt
//! Compute and return one output sample.
StkFloat tick( unsigned int channel = 0 );
//! Fill a channel of the StkFrames object with computed outputs.
/*!
The \c 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.
*/
StkFrames& tick( StkFrames& frames, unsigned int channel = 0 );
protected:
DelayA delayLine_;
OneZero loopFilter_;
OnePole pickFilter_;
Noise noise_;
StkFloat loopGain_;
unsigned long length_;
StkFloat loopGain_;
};
inline StkFloat Plucked :: tick( unsigned int )
@@ -72,6 +84,33 @@ inline StkFloat Plucked :: tick( unsigned int )
return lastFrame_[0] = 3.0 * delayLine_.tick( loopFilter_.tick( delayLine_.lastOut() * loopGain_ ) );
}
inline StkFrames& Plucked :: tick( StkFrames& frames, unsigned int channel )
{
unsigned int nChannels = lastFrame_.channels();
#if defined(_STK_DEBUG_)
if ( channel > frames.channels() - nChannels ) {
oStream_ << "Plucked::tick(): channel and StkFrames arguments are incompatible!";
handleError( StkError::FUNCTION_ARGUMENT );
}
#endif
StkFloat *samples = &frames[channel];
unsigned int j, hop = frames.channels() - nChannels;
if ( nChannels == 1 ) {
for ( unsigned int i=0; i<frames.frames(); i++, samples += hop )
*samples++ = tick();
}
else {
for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) {
*samples++ = tick();
for ( j=1; j<nChannels; j++ )
*samples++ = lastFrame_[j];
}
}
return frames;
}
} // stk namespace
#endif