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Frequency tracker: added squelch gate control

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This commit is contained in:
f4exb
2019-05-05 13:19:00 +02:00
parent f63b0fe96c
commit cdf8a63294
13 changed files with 152 additions and 22 deletions
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plugins/channelrx/freqtracker/freqtracker.cpp
+29 -6
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@@ -59,6 +59,7 @@ FreqTracker::FreqTracker(DeviceSourceAPI *deviceAPI) :
m_channelSampleRate(48000),
m_running(false),
m_squelchOpen(false),
m_squelchGate(0),
m_magsqSum(0.0f),
m_magsqPeak(0.0f),
m_magsqCount(0),
@@ -182,19 +183,35 @@ void FreqTracker::processOneSample(Complex &ci)
if (m_magsq < m_squelchLevel)
{
if (m_squelchCount > 0) {
m_squelchCount--;
if (m_squelchGate > 0)
{
if (m_squelchCount > 0) {
m_squelchCount--;
}
m_squelchOpen = m_squelchCount >= m_squelchGate;
}
else
{
m_squelchOpen = false;
}
}
else
{
if (m_squelchCount < m_channelSampleRate / 10) {
m_squelchCount++;
if (m_squelchGate > 0)
{
if (m_squelchCount < 2*m_squelchGate) {
m_squelchCount++;
}
m_squelchOpen = m_squelchCount >= m_squelchGate;
}
else
{
m_squelchOpen = true;
}
}
m_squelchOpen = (m_squelchCount >= m_channelSampleRate / 20);
if (m_squelchOpen)
{
if (m_settings.m_trackerType == FreqTrackerSettings::TrackerFLL)
@@ -412,6 +429,11 @@ void FreqTracker::applySettings(const FreqTrackerSettings& settings, bool force)
reverseAPIKeys.append("rrcRolloff");
updateInterpolator = true;
}
if ((m_settings.m_squelchGate != settings.m_squelchGate) || force)
{
reverseAPIKeys.append("squelchGate");
updateInterpolator = true;
}
if (settings.m_useReverseAPI)
{
@@ -439,6 +461,7 @@ void FreqTracker::setInterpolator()
m_interpolatorDistanceRemain = 0;
m_interpolatorDistance = (Real) m_inputSampleRate / (Real) m_channelSampleRate;
m_rrcFilter->create_rrc_filter(m_settings.m_rfBandwidth / m_channelSampleRate, m_settings.m_rrcRolloff / 100.0);
m_squelchGate = (m_channelSampleRate / 100) * m_settings.m_squelchGate; // gate is given in 10s of ms at channel sample rate
m_settingsMutex.unlock();
}