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Perry's simple reverberator class. More...
#include <PRCRev.h>
Public Member Functions | |
PRCRev (StkFloat T60=1.0) | |
Class constructor taking a T60 decay time argument (one second default value). | |
void | clear (void) |
Reset and clear all internal state. | |
void | setT60 (StkFloat T60) |
Set the reverberation T60 decay time. | |
StkFloat | lastOut (unsigned int channel=0) |
Return the specified channel value of the last computed stereo frame. | |
StkFloat | tick (StkFloat input, unsigned int channel=0) |
Input one sample to the effect and return the specified channel value of the computed stereo frame. | |
StkFrames & | tick (StkFrames &frames, unsigned int channel=0) |
Take a channel of the StkFrames object as inputs to the effect and replace with stereo outputs. | |
StkFrames & | tick (StkFrames &iFrames, StkFrames &oFrames, unsigned int iChannel=0, unsigned int oChannel=0) |
Take a channel of the iFrames object as inputs to the effect and write stereo outputs to the oFrames object. |
Perry's simple reverberator class.
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, 1995-2012.
StkFloat stk::PRCRev::lastOut | ( | unsigned int | channel = 0 |
) | [inline] |
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 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.
00091 { 00092 #if defined(_STK_DEBUG_) 00093 if ( channel > 1 ) { 00094 oStream_ << "PRCRev::lastOut(): channel argument must be less than 2!"; 00095 handleError( StkError::FUNCTION_ARGUMENT ); 00096 } 00097 #endif 00098 00099 return lastFrame_[channel]; 00100 }
StkFloat stk::PRCRev::tick | ( | StkFloat | input, | |
unsigned int | channel = 0 | |||
) | [inline] |
Input one sample to the effect and return the specified channel
value of the computed stereo frame.
Use the lastFrame() function to get both values of the computed stereo output frame. The 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.
00103 { 00104 #if defined(_STK_DEBUG_) 00105 if ( channel > 1 ) { 00106 oStream_ << "PRCRev::tick(): channel argument must be less than 2!"; 00107 handleError( StkError::FUNCTION_ARGUMENT ); 00108 } 00109 #endif 00110 00111 StkFloat temp, temp0, temp1, temp2, temp3; 00112 00113 temp = allpassDelays_[0].lastOut(); 00114 temp0 = allpassCoefficient_ * temp; 00115 temp0 += input; 00116 allpassDelays_[0].tick(temp0); 00117 temp0 = -(allpassCoefficient_ * temp0) + temp; 00118 00119 temp = allpassDelays_[1].lastOut(); 00120 temp1 = allpassCoefficient_ * temp; 00121 temp1 += temp0; 00122 allpassDelays_[1].tick(temp1); 00123 temp1 = -(allpassCoefficient_ * temp1) + temp; 00124 00125 temp2 = temp1 + ( combCoefficient_[0] * combDelays_[0].lastOut() ); 00126 temp3 = temp1 + ( combCoefficient_[1] * combDelays_[1].lastOut() ); 00127 00128 lastFrame_[0] = effectMix_ * (combDelays_[0].tick(temp2)); 00129 lastFrame_[1] = effectMix_ * (combDelays_[1].tick(temp3)); 00130 temp = (1.0 - effectMix_) * input; 00131 lastFrame_[0] += temp; 00132 lastFrame_[1] += temp; 00133 00134 return lastFrame_[channel]; 00135 }
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 channel
. Therefore, the 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& stk::PRCRev::tick | ( | StkFrames & | iFrames, | |
StkFrames & | oFrames, | |||
unsigned int | iChannel = 0 , |
|||
unsigned int | oChannel = 0 | |||
) |
Take a channel of the iFrames
object as inputs to the effect and write stereo outputs to the oFrames
object.
The iFrames
object reference is returned. The iChannel
argument must be less than the number of channels in the iFrames
argument (the first channel is specified by 0). The oChannel
argument must be less than ( channels() - 1 ) of the 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.
The Synthesis ToolKit in C++ (STK) |
©1995-2012 Perry R. Cook and Gary P. Scavone. All Rights Reserved. |