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Version 4.4.0

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This commit is contained in:
Gary Scavone
2013-09-29 23:11:39 +02:00
committed by Stephen Sinclair
parent d199342e86
commit eccd8c9981
287 changed files with 11712 additions and 7676 deletions
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130
include/PRCRev.h
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@@ -1,43 +1,84 @@
#ifndef STK_PRCREV_H
#define STK_PRCREV_H
#include "Effect.h"
#include "Delay.h"
namespace stk {
/***************************************************/
/*! \class PRCRev
\brief Perry's simple reverberator class.
This class is based on some of the famous
Stanford/CCRMA reverbs (NRev, KipRev), which
were based on the Chowning/Moorer/Schroeder
reverberators using networks of simple allpass
and comb delay filters. This class implements
two series allpass units and two parallel comb
filters.
This class takes a monophonic input signal and produces a stereo
output signal. It is based on some of the famous Stanford/CCRMA
reverbs (NRev, KipRev), which were based on the
Chowning/Moorer/Schroeder reverberators using networks of simple
allpass and comb delay filters. This class implements two series
allpass units and two parallel comb filters.
by Perry R. Cook and Gary P. Scavone, 1995 - 2007.
by Perry R. Cook and Gary P. Scavone, 1995 - 2009.
*/
/***************************************************/
#ifndef STK_PRCREV_H
#define STK_PRCREV_H
#include "Effect.h"
#include "Delay.h"
class PRCRev : public Effect
{
public:
//! Class constructor taking a T60 decay time argument (one second default value).
PRCRev( StkFloat T60 = 1.0 );
//! Class destructor.
~PRCRev();
//! Reset and clear all internal state.
void clear();
void clear( void );
//! Set the reverberation T60 decay time.
void setT60( StkFloat T60 );
protected:
//! Return the specified channel value of the last computed stereo frame.
/*!
Use the lastFrame() function to get both values of the last
computed stereo frame. The \c channel argument must be 0 or 1
(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.
*/
StkFloat lastOut( unsigned int channel = 0 );
StkFloat computeSample( StkFloat input );
//! Input one sample to the effect and return the specified \c channel value of the computed stereo frame.
/*!
Use the lastFrame() function to get both values of the computed
stereo output frame. The \c channel argument must be 0 or 1 (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.
*/
StkFloat tick( StkFloat input, unsigned int channel = 0 );
//! Take a channel of the StkFrames object as inputs to the effect and replace with stereo outputs.
/*!
The StkFrames argument reference is returned. The stereo
outputs are written to the StkFrames argument starting at the
specified \c channel. Therefore, the \c channel argument must be
less than ( channels() - 1 ) of 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 );
//! Take a channel of the \c iFrames object as inputs to the effect and write stereo outputs to the \c oFrames object.
/*!
The \c iFrames object reference is returned. The \c iChannel
argument must be less than the number of channels in the \c
iFrames argument (the first channel is specified by 0). The \c
oChannel argument must be less than ( channels() - 1 ) of the \c
oFrames argument. 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& iFrames, StkFrames &oFrames, unsigned int iChannel = 0, unsigned int oChannel = 0 );
protected:
Delay allpassDelays_[2];
Delay combDelays_[2];
@@ -46,5 +87,54 @@ protected:
};
inline StkFloat PRCRev :: lastOut( unsigned int channel )
{
#if defined(_STK_DEBUG_)
if ( channel > 1 ) {
errorString_ << "PRCRev::lastOut(): channel argument must be less than 2!";
handleError( StkError::FUNCTION_ARGUMENT );
}
#endif
return lastFrame_[channel];
}
inline StkFloat PRCRev :: tick( StkFloat input, unsigned int channel )
{
#if defined(_STK_DEBUG_)
if ( channel > 1 ) {
errorString_ << "PRCRev::tick(): channel argument must be less than 2!";
handleError( StkError::FUNCTION_ARGUMENT );
}
#endif
StkFloat temp, temp0, temp1, temp2, temp3;
temp = allpassDelays_[0].lastOut();
temp0 = allpassCoefficient_ * temp;
temp0 += input;
allpassDelays_[0].tick(temp0);
temp0 = -(allpassCoefficient_ * temp0) + temp;
temp = allpassDelays_[1].lastOut();
temp1 = allpassCoefficient_ * temp;
temp1 += temp0;
allpassDelays_[1].tick(temp1);
temp1 = -(allpassCoefficient_ * temp1) + temp;
temp2 = temp1 + (combCoefficient_[0] * combDelays_[0].lastOut());
temp3 = temp1 + (combCoefficient_[1] * combDelays_[1].lastOut());
lastFrame_[0] = effectMix_ * (combDelays_[0].tick(temp2));
lastFrame_[1] = effectMix_ * (combDelays_[1].tick(temp3));
temp = (1.0 - effectMix_) * input;
lastFrame_[0] += temp;
lastFrame_[1] += temp;
return lastFrame_[channel];
}
} // stk namespace
#endif