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This commit is contained in:
Roland Rossgotterer
2019-10-10 13:23:44 +02:00
committed by Mat Sutcliffe
parent 8367559713
commit 30d764d72c
1 changed files with 82 additions and 73 deletions
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155
src/blacksound/dsp/SimpleGate.h
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@@ -1,101 +1,110 @@
/* /*
* Simple Gate (header) * Simple Gate (header)
* *
* File : SimpleGate.h * File : SimpleGate.h
* Library : SimpleSource * Library : SimpleSource
* Version : 1.12 * Version : 1.12
* Class : SimpleGate, SimpleGateRms * Class : SimpleGate, SimpleGateRms
* *
* 2006, ChunkWare Music Software, OPEN-SOURCE * 2006, ChunkWare Music Software, OPEN-SOURCE
* *
* Permission is hereby granted, free of charge, to any person obtaining a * Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"), * copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation * to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense, * the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the * and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions: * Software is furnished to do so, subject to the following conditions:
* *
* The above copyright notice and this permission notice shall be included in * The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software. * all copies or substantial portions of the Software.
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE. * DEALINGS IN THE SOFTWARE.
*/ */
#ifndef __SIMPLE_GATE_H__ #ifndef __SIMPLE_GATE_H__
#define __SIMPLE_GATE_H__ #define __SIMPLE_GATE_H__
#include "SimpleHeader.h" // common header #include "SimpleHeader.h" // common header
#include "SimpleEnvelope.h" // for base class #include "SimpleEnvelope.h" // for base class
#include "SimpleGain.h" // for gain functions #include "SimpleGain.h" // for gain functions
namespace chunkware_simple namespace chunkware_simple
{ {
//------------------------------------------------------------- //! simple gate
// simple gate class SimpleGate : public AttRelEnvelope
//------------------------------------------------------------- {
class SimpleGate : public AttRelEnvelope public:
{ //! Constructor
public: SimpleGate();
SimpleGate();
virtual ~SimpleGate() {}
// parameters //! Destructor
virtual void setThresh( double dB ); virtual ~SimpleGate() {}
virtual double getThresh( void ) const { return threshdB_; }
// runtime
virtual void initRuntime( void ); // call before runtime (in resume())
void process( double &in1, double &in2 ); // gate runtime process
void process( double &in1, double &in2, double keyLinked ); // with stereo-linked key in
private:
// transfer function
double threshdB_; // threshold (dB)
double thresh_; // threshold (linear)
// runtime variables
double env_; // over-threshold envelope (linear)
}; // end SimpleGate class
//------------------------------------------------------------- //! set threshold
// simple gate with RMS detection virtual void setThresh(double dB);
//-------------------------------------------------------------
class SimpleGateRms : public SimpleGate
{
public:
SimpleGateRms();
virtual ~SimpleGateRms() {}
// sample rate //! get threshold
virtual void setSampleRate( double sampleRate ); virtual double getThresh(void) const { return threshdB_; }
// RMS window // init runtime
virtual void setWindow( double ms ); virtual void initRuntime(void); // call before runtime (in resume())
virtual double getWindow( void ) const { return ave_.getTc(); }
// runtime process //! Process audio
virtual void initRuntime( void ); // call before runtime (in resume()) void process(double &in1, double &in2); // gate runtime process
void process( double &in1, double &in2 ); // gate runtime process
private: //! Process audio stereo-linked
void process(double &in1, double &in2, double keyLinked); // with stereo-linked key in
EnvelopeDetector ave_; // averager private:
double aveOfSqrs_; // average of squares // transfer function
double threshdB_; //!< threshold (dB)
double thresh_; //!< threshold (linear)
}; // end SimpleGateRms class // runtime variables
double env_; //!< over-threshold envelope (linear)
};
} // end namespace chunkware_simple //! simple gate with RMS detection
class SimpleGateRms : public SimpleGate
{
public:
//! Constructor
SimpleGateRms();
//! Destructor
virtual ~SimpleGateRms() {}
//! set sample rate
virtual void setSampleRate(double sampleRate);
//! set RMS window
virtual void setWindow(double ms);
//! get RMS window
virtual double getWindow(void) const { return ave_.getTc(); }
//! \copydoc SimpleGate::initRuntime
virtual void initRuntime(void); // call before runtime (in resume())
//! \copydoc SimpleGate::process
void process(double &in1, double &in2); // gate runtime process
private:
EnvelopeDetector ave_; //!< averager
double aveOfSqrs_; //!< average of squares
}; // end SimpleGateRms class
} // end namespace chunkware_simple
// include inlined process function // include inlined process function
#include "SimpleGateProcess.inl" #include "SimpleGateProcess.inl"
#endif // end __SIMPLE_GATE_H__ #endif // end __SIMPLE_GATE_H__