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SSB demod: set AGC threshold step up and down maximum time to 100ms

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This commit is contained in:
f4exb 2017-07-26 13:36:18 +02:00
parent da6b60d48c
commit a815507f77
1 changed files with 7 additions and 6 deletions
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13
sdrbase/dsp/agc.cpp
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@ -9,6 +9,7 @@
#include "dsp/agc.h" #include "dsp/agc.h"
#include "util/smootherstep.h" #include "util/smootherstep.h"
#define StepLengthMax 4800 // 100ms
AGC::AGC(int historySize, Real R) : AGC::AGC(int historySize, Real R) :
m_u0(1.0), m_u0(1.0),
@ -49,9 +50,9 @@ MagSquaredAGC::MagSquaredAGC(int historySize, double R, double threshold) :
m_magsq(0.0), m_magsq(0.0),
m_threshold(threshold), m_threshold(threshold),
m_gate(0), m_gate(0),
m_stepLength(std::min(2400, historySize/2)), m_stepLength(std::min(StepLengthMax, historySize/2)),
m_stepUpCounter(0), m_stepUpCounter(0),
m_stepDownCounter(0), m_stepDownCounter(m_stepLength),
m_gateCounter(0) m_gateCounter(0)
{} {}
@ -60,7 +61,7 @@ MagSquaredAGC::~MagSquaredAGC()
void MagSquaredAGC::resize(int historySize, Real R) void MagSquaredAGC::resize(int historySize, Real R)
{ {
m_stepLength = std::min(2400, historySize/2); m_stepLength = std::min(StepLengthMax, historySize/2);
AGC::resize(historySize, R); AGC::resize(historySize, R);
} }
@ -132,9 +133,9 @@ MagAGC::MagAGC(int historySize, double R, double threshold) :
m_magsq(0.0), m_magsq(0.0),
m_threshold(threshold), m_threshold(threshold),
m_gate(0), m_gate(0),
m_stepLength(std::min(2400, historySize/2)), m_stepLength(std::min(StepLengthMax, historySize/2)),
m_stepUpCounter(0), m_stepUpCounter(0),
m_stepDownCounter(0), m_stepDownCounter(m_stepLength),
m_gateCounter(0) m_gateCounter(0)
{} {}
@ -143,7 +144,7 @@ MagAGC::~MagAGC()
void MagAGC::resize(int historySize, Real R) void MagAGC::resize(int historySize, Real R)
{ {
m_stepLength = std::min(2400, historySize/2); m_stepLength = std::min(StepLengthMax, historySize/2);
AGC::resize(historySize, R); AGC::resize(historySize, R);
} }