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SSB demod: tie AGC steep transition correction to AGC clamping

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f4exb 2023-12-03 13:48:44 +01:00
parent e3d862c8a8
commit 9776e77fd5
1 changed files with 5 additions and 4 deletions
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9
plugins/channelrx/demodssb/ssbdemodsink.cpp
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@ -179,11 +179,12 @@ void SSBDemodSink::processOneSample(Complex &ci)
// Prevent overload based on squared magnitude variation // Prevent overload based on squared magnitude variation
// Only if AGC is active // Only if AGC is active
if (m_agcActive && (std::abs(m_magsqCur - m_magsqPrev) > m_agcTarget*m_agcTarget*5.0)) if (m_agcActive && m_agcClamping && (std::abs(m_magsqCur - m_magsqPrev) > m_agcTarget*m_agcTarget*5.0) & (agcVal > 100.0))
{ {
m_agc.reset(m_agcTarget*100.0); // Quench AGC at -20dB the target float target = m_agcTarget*sqrt(agcVal); // Quench AGC depending on previous value
m_agc.resetStepCounters(); m_agc.reset(target);
m_squelchDelayLine.write(sideband[i]); m_squelchDelayLine.write(fftfilt::cmplx{target, 0.0});
m_magsqCur = target*target;
} }
else else
{ {