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AM demod: fixed volume AGC

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f4exb 2018-02-16 00:43:21 +01:00
parent 64044e521e
commit b680b11206
1 changed files with 19 additions and 16 deletions
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35
sdrbase/dsp/agc.h
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@ -70,43 +70,46 @@ template<uint32_t AvgSize>
class SimpleAGC
{
public:
SimpleAGC(Real cutoff=0, Real clip=0) :
m_squelchOpen(false),
SimpleAGC(Real initial, Real cutoff=0, Real clip=0) :
m_cutoff(cutoff),
m_clip(clip)
{}
m_clip(clip),
m_moving_average(AvgSize, initial)
{
}
void resize(Real cutoff=0, Real clip=0)
void resize(Real initial, Real cutoff=0, Real clip=0)
{
m_cutoff = cutoff;
m_clip = clip;
m_moving_average.resize(AvgSize, initial);
}
void fill(double value)
{
m_moving_average.fill(value);
}
Real getValue()
{
if ((Real) m_moving_average > m_clip)
{
return (Real) m_moving_average;
} else
{
if ((Real) m_moving_average.average() > m_clip) {
return (Real) m_moving_average.average();
} else {
return m_clip;
}
}
void feed(Real value)
{
if (value > m_cutoff)
{
m_moving_average(value);
if (value > m_cutoff) {
m_moving_average.feed(value);
}
}
private:
bool m_squelchOpen; // open for processing
Real m_cutoff; // consider samples only above this level
Real m_clip; // never go below this level
//MovingAverage<double> m_moving_average; // Averaging engine. The stack length conditions the smoothness of AGC.
MovingAverageUtil<Real, double, AvgSize> m_moving_average;
MovingAverage<double> m_moving_average; // Averaging engine. The stack length conditions the smoothness of AGC.
//MovingAverageUtil<Real, double, AvgSize> m_moving_average;
};
#endif /* INCLUDE_GPL_DSP_AGC_H_ */