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/***********************************************/
/**
* @file DigitalFilterReduceFilterOutput.h
*
* @brief Remove filtered result from signal.
*
* @author Torsten Mayer-Guerr
* @date 2017-09-09
*
*/
/***********************************************/
#ifndef __GROOPS_DIGITALFILTERONEMINUS__
#define __GROOPS_DIGITALFILTERONEMINUS__
// Latex documentation
#ifdef DOCSTRING_DigitalFilter
static const char *docstringDigitalFilterReduceFilterOutput = R"(
\subsection{ReduceFilterOutput}
Removes the filtered signal from the input, i.e. the input is passed
through a \configClass{digitalFilter}{digitalFilterType} with a frequency response of $1-H(f)$.
)";
#endif
/***********************************************/
#include "classes/digitalFilter/digitalFilter.h"
/***** CLASS ***********************************/
/** @brief Remove filtered result from signal.
* @ingroup digitalFilterGroup
* @see DigitalFilter */
class DigitalFilterReduceFilterOutput : public DigitalFilterBase
{
DigitalFilterPtr filter2;
public:
DigitalFilterReduceFilterOutput(Config &config);
Matrix filter(const_MatrixSliceRef input) const;
std::vector<std::complex<Double>> frequencyResponse(UInt length) const;
};
/***********************************************/
/***** Inlines *********************************/
/***********************************************/
inline DigitalFilterReduceFilterOutput::DigitalFilterReduceFilterOutput(Config &config)
{
try
{
readConfig(config, "filter", filter2, Config::MUSTSET, "", "remove filter output from input signal");
if(isCreateSchema(config)) return;
}
catch(std::exception &e)
{
GROOPS_RETHROW(e)
}
}
/***********************************************/
Matrix DigitalFilterReduceFilterOutput::filter(const_MatrixSliceRef input) const
{
try
{
return input - filter2->filter(input);
}
catch(std::exception &e)
{
GROOPS_RETHROW(e)
}
}
/***********************************************/
std::vector<std::complex<Double>> DigitalFilterReduceFilterOutput::frequencyResponse(UInt length) const
{
auto H = filter2->frequencyResponse(length);
for(UInt i=0; i<H.size(); i++)
H.at(i) = 1.-H.at(i);
return H;
}
/***********************************************/
#endif
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